Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Mundo Nuevo, Punta Plancha, 31.vii.2013, M. Pereira, ex Iridopsis herse eating Cochlospermum vitifolium, sibling of wasp DHJPAR0053946, 13-SRNP-56118” (BMNH). Paratypes: 10♀ 1♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, USNM).

Lower face medially dark yellowish-brown reaching to level of middle of toruli (Figs 37, 38); scutellum smooth (Fig. 49); fore and mid legs with coxae yellowish-white, femora tibiae and tarsi yellowish-brown, hind leg with coxa dark yellowish-brown, femur, tibia and tarsus yellowish-brown (Fig. 36); petiole 0.8× as long as wide; female and male gaster with anterior ½ yellowish-brown with narrow dark brown lateral margins, posterior ½ dark brown (Figs 39, 40); male scape slightly enlarged (Fig. 42), widest medially, 3.2× as long as wide.

Female. Length of body 1.7 mm. Antenna with scape yellowish-white, pedicel yellowish-brown, flagellum dark brown (Fig. 41). Mandibles and palpi yellowish-white. Head black and shiny, lower face medially dark yellowish-brown reaching to level of middle of toruli (Fig. 37). Frons close to eyes with two rows of setae (Fig. 47). Vertex smooth and shiny (Fig. 48). Occipital margin rounded (Fig. 48).

Mesosoma black and shiny (Fig. 36). Scutellum 1.0× as long as wide; smooth and shiny (Fig. 49). Dorsellum along anterior margin with a groove that is divided by longitudinal carina medially (Fig. 733), groove medially 0.3× as long as length of dorsellum. Propodeum smooth and shiny (Fig. 733); anteromedially with a short and wide semicircular cup that is strongly raised in posterior part; propodeal callus with nine setae. Legs (Fig. 36): fore and mid legs with coxae yellowish-white, femora tibiae and tarsi yellowish-brown; hind leg with coxa dark yellowish-brown, femur, tibia and tarsus yellowish-brown. Fore wing: costal cell with one row of setae on ventral surface, and margin with four setae close to marginal vein; with 14 admarginal setae.

Gaster with anterior ½ yellowish-brown with narrow dark brown lateral margins, posterior ½ dark brown (Fig. 39).

Ratios. HE/MS/WM = 2.0/1.0/1.1; POL/OOL/POO = 8.6/4.8/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.6/4.8/3.3; WH/WT = 1.2; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.2/2.4/7.2/3.0/1.6/1.0/1.4; LP/WP = 0.8; MM/LG = 1.4.

Male. Length of body 1.6 mm. Scape slightly enlarged, widest medially (Fig. 42), with sensory pores limited to apical ⅔ of ventral margin, sensory area yellowish-white. Similar to female except shorter gaster.

Ratios. LC/WS = 3.2; MM/LG = 1.7.

Feeding on last instar larva of Iridopsis herse (Geometridae) feeding on Cochlospermum vitifolium (Bixaceae), parasitoid cocoons under larval mummy of host.

Costa Rica (Guanacaste Province).

This species is named after Alejandro A. Valerio, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Pasmompa, 12.i.2006, P. Rios, ex Eustrotia Poole14 eating Brachiaria arrecta, sibling of wasp DHJPAR0028872, 06-SRNP-30437” (BMNH). PARATYPES: 8♀ with same label data as holotype (BMNH, CNC, INBio, MZLU, USNM).

Antenna long and slender (Fig. 46), e.g. flagellum 3.0× as long as height of an eye; lower face black with median part dark reddish-brown, pale area reaching to outer lateral margin of toruli (Fig. 44); legs yellowish-brown with fore and mid coxae yellowish-white (Fig. 43); petiole 1.0× as long as wide; gaster yellowish-brown with dark brown lateral margins and apex, and with a dark brown spot medially on tergite 4 (Fig. 45).

Female. Length of body 2.6 mm. Antenna long and slender, with scape yellowish-white in basal ⅔, yellowish-brown in apical ⅓, pedicel yellowish-brown, flagellomeres 1–3 yellowish-brown ventrally and dark brown dorsally, 4–6 dark brown (Fig. 46). Mandibles and palpi yellowish-white. Head black and shiny, lower face medially dark reddish-brown, pale area reaching to outer lateral margin of toruli (Fig. 44). Frons close to eyes with one row of setae with upper part of row removed away from eye (Fig. 50). Vertex smooth (Fig. 51). Occipital margin with a carina behind ocellar triangle (Fig. 51).

Mesosoma black and shiny (Fig. 43). Each sidelobe of mesoscutum with 11 setae. Scutellum 0.9× as long as wide; with very weak engraved reticulation (Fig. 52). Dorsellum along anterior margin with a groove that is divided by longitudinal carinae (Fig. 734), groove medially 0.3× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 734); anteromedially with a short and wide triangular cup; propodeal callus with 10 setae. Legs yellowish-brown with fore and mid coxae yellowish-white (Fig. 43). Fore wing: costal cell with two rows of setae on ventral surface, and margin with six setae close to marginal vein; with ten admarginal setae in one row.

Gaster yellowish-brown with sides and apex dark brown, and with a dark brown spot medially on tergite 4 (Fig. 45).

Ratios. HE/MS/WM = 1.8/1.0/1.2; POL/OOL/POO = 4.7/2.8/1.0; OOL/DO = 1.5; WE/WF/WH/HH = 1.0/2.7/4.7/3.5; WH/WT = 1.0; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.2/2.6/7.4/2.5/1.5/1.0/2.3; LP/WP = 1.0; MM/LG = 1.0.

Male. Unknown.

Feeding on last instar larva of Eustrotia Poole14 (Noctuidae) feeding on Brachiaria arrecta (Poaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after M. Alex Smith, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Potrerillos, Rio Azufrado, 18.v.2006, L. Swiacki, ex Callopistria floridensis eating Ceratopteris Espinoza 4311, sibling of wasp DHJPAR0028881, 06-SRNP-13561” (BMNH). Paratypes: 13♀ 2♂: COSTA RICA (ACG): Guanacaste: 5♀ 1♂ with same label data as holotype (BMNH, INBio); Sector Potrerillos: Rio Azufrado: ex Callopistria floridensis eating Ceratopteris Espinoza 4311 18.v.2006, L. Swiacki, sibling of wasp DHJPAR00288954311, 06-SRNP-13538, (6♀, in BMNH, CNC, MZLU, USNM); Sector Pitilla: Bullas, 12.ii.2010, D. Martinez, ex C. floridensis eating Niphidium oblanceolatum, sibling of wasp DHJPAR00392, 10-SRNP-70752 (2♀ 1♂, in INBio).

Lower face black (Figs 54, 55); legs yellowish-brown with mid and hind coxae and hind femur brown (Fig. 53); petiole 1.0× as long as wide; gaster with anterior ½ yellowish-brown (female, Fig. 56) or white (male, Fig. 57), with lateral margins black, posterior ½ black; male antenna with scape dark brown to black, strongly swollen (Fig. 59), 1.6× as long as wide, with numerous sensory pores scattered all over the inner lateral surface. Very similar to E. insularis but with lower face black (reddish-brown in E. insularis), male petiole as long as wide (0.8× as long as wide in E. insularis), and hind legs with coxae and femora brown (yellowish-brown in E. insularis).

Female. Length of body 2.2 mm. Antenna with scape and pedicel yellowish-brown, flagellomeres 1–2 yellowish-brown with dorsal surface dark brown, flagellomeres 3–6 dark brown (Fig. 58). Mandibles and palpi yellowish-brown. Head including lower face black and shiny (Fig. 54). Frons close to eyes with four irregular rows of setae (Fig. 64). Vertex smooth and shiny (Fig. 65). Occipital margin with a carina behind ocellar triangle (Fig. 65).

Mesosoma black and shiny (Fig. 53). Scutellum 0.8× as long as wide; with very weak reticulation (Fig. 66). Dorsellum along anterior margin with a deep groove that is divided by longitudinal carinae (Fig. 735), groove medially 0.4× as long as length of dorsellum. Propodeum smooth and shiny (Fig. 735); anteromedially with a semicircular cup; propodeal callus with 11 setae. Legs (Fig. 53): fore leg yellowish-brown; mid leg with coxa brown, femur, tibia and tarsus yellowish-brown; hind leg with coxa and femur brown, tibia and tarsus yellowish-brown. Fore wing: costal cell with one complete row of setae on ventral surface, and margin with six setae close to marginal vein; with 14 admarginal setae in one row.

Gaster in anterior ½ yellowish-brown with lateral margins black, posterior ½ black (Fig. 56).

Ratios. HE/MS/WM = 1.7/1.0/1.0; POL/OOL/POO = 8.3/4.0/1.0; OOL/DO = 1.8; WE/WF/WH/HH = 1.0/2.8/4.9/3.7; WH/WT = 1.1; PM/ST = 1.3; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 5.0/3.0/8.3/3.3/1.8/1.0/1.6; LP/WP = 1.0; MM/LG = 1.0.

Male. Length of body 1.6 mm. Scape dark brown to black, strongly swollen (Fig. 59); with entire inner lateral surface with sensory pores. Similar to female except antenna with pedicel and flagellomeres 1–2 yellowish-white, flagellomeres 3–6 dark brown to black, 3–4 with peduncles yellowish-white (Fig. 59), gaster with anterior pale area white (Fig. 57).

Ratios. LC/WS = 1.6; MM/LG = 1.0.

Feeding on third instar larva of Callopistria floridensis (Noctuidae) feeding on Ceratopteris Espinoza 4311 (Parkeriaceae) and Niphidium oblanceolatum (Polypodiaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Alvaro Wille, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Santa Rosa, Bosque Humedo, 11.vii.1994, gusaneros, ex Elymiotis attenuata eating Mascagnia sinemariensis, no barcode, 94-SRNP-5588” (BMNH). PARATYPES: 48♀ 12♂: Guanacaste: 31♀ 2♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, USNM); following from same locality and host as holotype but collected 9.viii.1992, no barcode, 92-SRNP-4426 (7♀, in INBio, MIUCR), 16.vii.1993, host feeding on Hiraea reclinata, no barcode, 93-SRNP-3731 (1♀ 2♂, in INBio), 11.vii.1994, no barcode, 94-SRNP-5595 and 94-SRNP-5588 (10♀ 8♂, in BMNH, CNC, MIUCR, USNM).

Lower face medially reddish-brown (female, Fig. 71) or yellowish-brown (male, Fig. 72), pale area reaching slightly outside level of lateral margin of toruli, parts betwen pale area and eyes black; vertex with parts lateral to ocellar triangle dark reddish-brown; fore and mid legs yellowish-white, hind leg with coxa dark yellowish-brown, femur yellowish-brown, tibia and tarsus yellowish-white (Fig. 70); petiole 0.7× as long as wide; gaster with anterior ½ yellowish-brown with dark brown lateral margins (female, Fig. 73) or white with dark brown lateral margins (male, Fig. 74), posterior ½ dark brown; male antenna with scape slightly expanded and widest medially, 3.3× as long as wide (Fig. 76), sensory area dark brown.

Female. Length of body 2.6 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel yellowish-brown, flagellomeres pale brown (Fig. 75). Mandibles yellowish-white, palpi white. Head black and shiny, vertex with parts lateral to ocellar triangle dark reddish-brown, lower face medially reddish-brown, pale area reaching slightly outside level of lateral margin of toruli, parts between pale area and eyes black (Fig. 71). Frons close to eyes with two rows of setae (Fig. 81). Vertex with very weak reticulation inside ocellar triangle, smooth outside triangle (Fig. 82). Occipital margin with a weak carina behind ocellar triangle (Fig. 82).

Mesosoma black and shiny (Fig. 70). Each sidelobe of mesoscutum with 14 setae. Scutellum 0.8× as long as wide; with weak engraved reticulation (Fig. 83). Dorsellum anteriorly with a wide groove that is divided by longitudinal carinae (Fig. 736), groove medially 0.5× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 736); anteromedially with a transverse semicircular cup; propodeal callus with five setae. Legs with fore and mid legs yellowish-white, hind leg with coxa dark yellowish-brown, femur yellowish-brown, tibia and tarsus yellowish-white (Fig. 70). Fore wing: costal cell with 1 row of setae on ventral surface, and margin with four setae close to marginal vein; with 13 admarginal setae, in one row.

Gaster with anterior ½ yellowish-brown with dark brown lateral margins, posterior ½ dark brown (Fig. 73).

Ratios. HE/MS/WM = 1.5/1.0/1.0; POL/OOL/POO = 10.0/5.0/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.6/4.6/3.3; WH/WT = 1.0; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.8/2.8/7.6/2.8/1.8/1.0/1.8; LP/WP = 0.7; MM/LG = 1.0.

Male. Length of body 1.8 mm. Scape slightly expanded and widest medially, sensory pores confined to anteroventral ¾ (Fig. 427), sensory area dark brown (Fig. 76). Otherwise similar to female except lower face with pale part yellowish-brown (Fig. 72), gaster with anterior ½ white with dark brown lateral margins, and shorter (Fig. 74).

Ratios. LC/WS = 3.3; MM/LG = 1.2.

Feeding on penultimate instar karva of Elymiotis attenuata (Notodontidae) feeding on Hiraea reclinata and Mascagnia sinemariensis (Malpighiaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Andy Bennett, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Ingas, 28.xi.2011, F. Quesada, ex Eustrotia Poole04 feeding on Scleria melaleuca, sibling of wasp DHJPAR0046907, 11-SRNP-33575” (BMNH). PARATYPES: 4♀ 1♂ with same label data as holotype (BMNH, INBio).

Lower face completely black (Fig. 88, 89); legs yellowish-brown (Fig. 87); petiole 1.0× as long as wide; gaster in female dark brown with a narrow yellowish-brown longitudinal stripe in anteromedian ½ (Fig. 90), in male with anterior ½ white with dark brown lateral margins and posterior ½ dark brown (Fig. 91); male antenna with scape slightly expanded and widest in the middle and with apex narrow, 3.1× as long as wide, sensory area brown (Fig. 93).

Female. Length of body 2.0 mm. Antenna with scape and pedicel yellowish-brown, flagellomeres dark brown (Fig. 92). Mandibles and palpi white. Head including lower face black and shiny (Fig. 88). Frons close to eyes with two rows of setae (Fig. 98). Vertex smooth (Fig. 99). Occipital margin rounded (Fig. 99).

Mesosoma black and shiny (Fig. 87). Each sidelobe of mesoscutum with nine setae. Scutellum 1.0× as long as wide; with very weak engraved reticulation, posterior margin smooth (Fig. 100). Dorsellum anteriorly with a groove that is divided by longitudinal carinae (Fig. 737), groove medially 0.4× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 737); anteromedially with a triangular cup; propodeal callus with seven setae. Legs yellowish-brown (Fig. 87). Fore wing: costal cell with one row of setae on ventral surface, and margin with four setae close to marginal vein; with 13 admarginal setae, in one row.

Gaster dark brown with a narrow yellowish-brown longitudinal stripe in anteromedian ½ (Fig. 90).

Ratios. HE/MS/WM = 2.2/1.0/1.3; POL/OOL/POO = 3.3/2.2/1.0; OOL/DO = 1.5; WE/WF/WH/HH = 1.0/2.6/4.6/3.1; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.0/2.8/7.3/2.6/1.6/1.0/2.0; LP/WP = 1.0; MM/LG = 1.1.

Male. Length of body 1.5 mm. Scape slightly expanded and widest in the middle and with apex narrow (Fig. 93), sensory pores confined to ventral margin and with sensory area brown. Otherwise similar to female except gaster with anterior ½ white with dark brown lateral margins (Fig. 91), and shorter.

Ratios. LC/WS = 3.1; MM/LG = 1.2.

Feeding on third instar larva of Eustrotia Poole04 (Noctuidae) feeding on Scleria melaleuca (Cyperaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Andy R. Deans, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Medrano, 19.i.2012, R. Calero, ex Tyrissa Poole01 eating Senegalia tenuifolia, sibling of wasp DHJPAR0046917, 12-SRNP-70154” (BMNH). PARATYPE: 1♂ with same label data as holotype (BMNH).

Lower face with median part yellowish-brown in upper ½, dark brown in lower ½, pale area reaching to outer lateral margin of toruli (Figs 105, 106); legs yellowish-brown (Fig. 104); petiole 1.1× as long as wide; gaster dark brown, anterior ½ with a dusky pale spot medially (Figs 107, 108); male antenna with scape expanded and widest medially, 2.8× as long as wide (Fig. 110).

Female. Length of body 1.7 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel and flagellomere 1 yellowish-brown, 2–6 dark brown (Fig. 109). Mandibles and palpi white. Head black and shiny, lower face with median part yellowish-brown in upper ½, dark brown in lower ½, pale area reaching to outer lateral margin of toruli, parts between pale area and eyes black (Fig. 105). Frons close to eyes with two rows of setae (Fig. 115). Vertex smooth (Fig. 116). Occipital margin rounded (Fig. 116).

Mesosoma black and shiny (Fig. 104). Each sidelobe of mesoscutum with 16 setae. Scutellum 0.9× as long as wide; with weak engraved reticulation, posterior margin smooth (Fig. 117). Dorsellum anteriorly with a narrow groove that is divided by longitudinal carinae (Fig. 738), groove medially 0.2× as long as length of dorsellum. Propodeum smooth (Fig. 738); anteromedially with a semicircular cup; propodeal callus with six setae. Legs yellowish-brown (Fig. 104). Fore wing: costal cell on ventral surface with one row of setae, and margin with two setae close to marginal vein; with 12 admarginal setae, in one row.

Gaster dark brown, anterior ½ with a dusky pale spot medially (Fig. 107).

Ratios. HE/MS/WM = 1.8/1.0/1.0; POL/OOL/POO = 5.3/3.4/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.3/4.2/3.0; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.8/2.4/6.2/2.0/1.4/1.0/1.6; LP/WP = 1.1; MM/LG = 1.4.

Male. Length of body 1.4 mm. Scape expanded and widest medially (Fig. 110), sensory pores confined to ventral margin; sensory area pale as scape. Otherwise similar to female except shorter gaster.

Ratios. LC/WS = 2.8; MM/LG = 1.5.

Feeding on penultimate instar larva of Tyrissa Poole01 (Erebidae) feeding on Senegalia tenuifolia (Fabaceae), parasitoid cocoons stuck to host larva cuticle and leaf.

Costa Rica (Guanacaste Province).

This species is named after Annette K. Walker, in recognition of her contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Alajuela, ACG, Rio Blanco Abajo, 23.vi.2005, E. Araya, ex Dyops chromatophilaDHJ01 eating Coussapoa nymphaeifolia, sibling of wasp DHJPAR0028838, 05-SRNP-3556” (BMNH). Paratypes: 44♀ 21♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, MIUCR, USNM).

Lower face medially reddish-brown (female, Fig. 122) or yellowish-white (male, Fig. 123), pale area reaching to outer lateral margin of toruli; scutellum with sides and posterior margin smooth (Fig. 134); female legs yellowish-brown (Fig. 121), male with fore and mid legs predominantly yellowish-white and hind leg yellowish-brown; male antenna with scape slightly expanded, widest in the middle, and 2.8× as long as wide (Fig. 127); petiole 0.8× as long as wide; gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Figs 124, 125).

Female. Length of body 2.2 mm. Antenna with scape and pedicel yellowish-brown, flagellomeres 1–2 dark brown dorsally and yellowish-brown ventrally, 3–6 dark brown (Fig. 126). Mandibles yellowish-brown with base dark brown, palpi white. Head black and shiny, lower face medially reddish-brown, pale area reaching to outer lateral margin of toruli, and with parts lateral to pale area black (Fig. 122). Frons close to eyes with three rows of setae (Fig. 132). Vertex with very weak reticulation (Fig. 133). Occipital margin with a carina behind ocellar triangle (Fig. 133).

Mesosoma black and shiny (Fig. 121). Scutellum 1.0× as long as wide; with rather weak reticulation and with sides and posterior part smooth (Fig. 134). Dorsellum along anterior margin with a groove that is divided by longitudinal carinae (Fig. 739), groove medially 0.3× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 739); anteromedially with a semicircular cup; propodeal callus with ten setae. Legs yellowish-brown (Fig. 121). Fore wing: costal cell on ventral surface with two rows of setae in basal ½ and one row in apical ½, and margin with one seta close to marginal vein; with 13 admarginal setae in one row.

Gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Fig. 124).

Ratios. HE/MS/WM = 1.9/1.0/1.1; POL/OOL/POO = 8.0/4.1/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.9/5.0/3.7; WH/WT = 1.1; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.9/3.6/7.1/2.7/1.7/1.0/1.6; LP/WP = 0.8; MM/LG = 1.1.

Male. Length of body 1.8 mm. Scape white, somewhat expanded and widest in the middle (Fig. 127); sensory pores confined to apicoventral ⅔, sensory area white. Similar to female except pedicel and flagellomeres 1–2 yellowish-white and 3–6 brown dorsally and yellowish-brown ventrally (Fig. 127), lower face medially yellowish-white (Fig. 123); fore and mid legs predominantly yellowish-white, gaster shorter.

Ratios. LC/WS = 2.8; MM/LG = 1.3.

Feeding on last instar larva of Dyops chromatophilaDHJ01 (Erebidae) feeding on Coussapoa nymphaeifolia (Urticaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Alajuela Province).

This species is named after Bill L. Brown, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Murcielago, Camino Bahia Hachal, 13.vi.2006, G. Pereira, ex Bagisara tristicta eating Herissantia crispa, sibling of wasp DHJPAR0028861, 06-SRNP-17307” (BMNH). PARATYPES: 8♀: 1♀ with same label data as holotype (BMNH, INBio); Guanacaste: Parque Nacional Palo Verde, 50 m, LN 260952/385020, 5-16.vi.1999, malaise trap, I. Jiménez (6♀, CNC, INBio, USNM); Puntarenas: Peninsula Osa, Estación Agujas, 250-350 m, LS 276750/526550, 4-20.vi.1999, swept, J. Azofeifa (1♀, INBio).

Lower face medially yellowish-white with median part yellowish-brown, pale area reaching slightly outside outer lateral margin of toruli (Fig. 61); scutellum smooth medially and with very weak engraved reticulation laterally (Fig. 69); legs yellowish-brown (Fig. 60); petiole 0.5× as long as wide; gaster yellowish-brown with dark brown lateral margins (Fig. 62).

Female. Length of body 2.6 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel yellowish-brown, flagellomeres 1–4 yellowish-brown ventrally and dark brown dorsally, 5–6 dark brown (Fig. 58). Mandibles and palpi white. Head black and shiny, lower face medially yellowish-white with median part yellowish-brown, pale area reaching slightly outside outer lateral margin of toruli, with parts between pale area and eyes black (Fig. 61). Frons close to eyes with two rows of setae (Fig. 67). Vertex smooth (Fig. 68). Occipital margin rounded (Fig. 68).

Mesosoma black and shiny (Fig. 60). Each sidelobe of mesoscutum with 13 setae. Scutellum 1.0× as long as wide; smooth medially and with very weak engraved reticulation laterally (Fig. 69). Dorsellum along anterior margin with a groove that is very narrow laterally and wide medially, medially 0.4× as long as length of dorsellum, groove is divided by longitudinal carinae (Fig. 740). Propodeum partly with very weak reticulation and partly smooth (Fig. 740); anteromedially with a short and wide triangular cup; propodeal callus with 12 setae. Legs yellowish-brown (Fig. 60). Fore wing: costal cell with two rows of setae on ventral surface, and margin with two setae close to marginal vein; with 24 admarginal setae, in two rows.

Gaster yellowish-brown with dark brown lateral margins (Fig. 62).

Ratios. HE/MS/WM = 2.1/1.0/1.3; POL/OOL/POO = 6.7/3.8/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.6/4.6/3.5; WH/WT = 1.1; PM/ST = 1.2; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.2/1.7/6.0/1.8/1.3/1.0/1.7; LP/WP = 0.5; MM/LG = 1.0.

Male. Unknown.

Feeding on penultimate instar larva of Bagisara tristicta (Noctuidae) feeding on Herissantia crispa (Malvaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste and Puntarenas Provinces).

This species is named after Bob A. Wharton, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Cacao, 18.xii.2007, D. Garcia, ex Oxidia apidania eating Inga punctata, sibling of wasp DHJPAR0023273, 07-SRNP-47481” (BMNH). PARATYPES: 4♀ 3♂ with same label data as holotype (BMNH, INBio).

Entire lower face yellowish-white with median part yellowish-brown (female, Fig. 139) or completely white (male, Fig. 140), parts close to eyes extending above level of upper margin of toruli; dorsellum without groove or foveae along anterior margin (Fig. 741); fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 138); petiole 1.0× as long as wide; gaster with anterior ½ white with wide dark brown lateral margins, posterior ½ dark brown (Figs 141, 142); male antenna with scape slightly expanded and widest in the middle, 2.8× as long as wide (Fig. 144), flagellomeres 2–5 with a basal whorl of erect setae.

Female. Length of body 2.3 mm. Antenna with scape yellowish-white, pedicel yellowish-brown, flagellomeres pale brown (Fig. 143). Mandibles and palpi yellowish-white. Head black and shiny, entire lower face yellowish-white with median part yellowish-brown, parts close to eyes extending above level of upper margin of toruli (Fig. 139); vertex with parts lateral to ocellar triangle dark yellowish-brown. Frons close to eyes with two rows of setae (Fig. 149). Vertex smooth (Fig. 150). Occipital margin with a weak carina behind ocellar triangle (Fig. 150).

Mesosoma black and shiny (Fig. 138). Each sidelobe of mesoscutum with 14 setae. Scutellum 1.0× as long as wide; with strong engraved reticulation (Fig. 151). Dorsellum without groove along anterior margin (Fig. 741). Propodeum smooth (Fig. 741); anteromedially with a semicircular cup; propodeal callus with seven setae. Fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 138). Fore wing: costal cell with two rows of setae on ventral surface, and margin with four setae close to marginal vein; with 15 admarginal setae, in one row.

Gaster with anterior ½ white with wide dark brown lateral margins, posterior ½ dark brown (Fig. 141).

Ratios. HE/MS/WM = 2.3/1.0/1.8; POL/OOL/POO = 4.5/2.3/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.3/4.4/3.1; WH/WT = 1.1; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.7/2.7/7.1/2.9/1.6/1.0/1.6; LP/WP = 1.0; MM/LG = 1.1.

Male. Length of body 1.9 mm. Scape slightly expanded and widest in the middle (Fig. 144), sensory pores confined to ventral margin. Otherwise similar to female except flagellomeres 2–5 with a basal whorl of erect setae (Fig. 144), lower face completely white (Fig. 140); scutellum with very weak reticulation in posterior ¾; gaster shorter.

Ratios. LC/WS = 2.8; MM/LG = 1.2.

Feeding on penultimate instar larva of Oxidia apidania (Geometridae) feeding on Inga punctata (Fabaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Carlos E. Sarmiento, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Alajuela, ACG, Sector Rincon Rain Forest, Sendero Tucan, 25.xi.2011, P. Umana, ex Antiblemma ceras eating Conostegia xalapensis, sibling of wasp DHJPAR0046912, 11-SRNP-44933” (BMNH). PARATYPES: 8♀ 1♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, USNM).

Lower face with median part yellowish-brown, pale area reaching to level of outer lateral margins of toruli (Figs 156, 157); antennal flagellum long, e.g. 1^st flagellomere 3.0× as long as wide (Figs 160, 161); submarginal vein with four setae; legs yellowish-white with fore and mid coxae white (Fig. 155); petiole 1.3× as long as wide; gaster in female with anterior ½ white with dark brown lateral margins, followed by a wide dark brown transverse band, and with apex yellowish-brown (Fig. 158), in male with anterior ½ white with dark brown lateral margins and posterior ½ dark brown (Fig. 159); male antenna with scape slightly expanded and widest in the middle, 2.5× as long as wide (Fig. 161).

Female. Length of body 2.2 mm. Antenna with scape yellowish-white, pedicel yellowish-brown, flagellomeres 1–2 pale brown, 3–6 dark brown (Fig. 160); flagellum long, e.g. 1^st flagellomere 3.0× as long as wide. Mandibles and palpi white. Head black and shiny, lower face with median part yellowish-brown, pale area reaching to level of outer lateral margins of toruli, with parts between pale area and eyes black (Fig. 156). Frons close to eyes with two rows of setae (Fig. 166). Vertex with very weak reticulation inside ocellar triangle, smooth outside (Fig. 167). Occipital margin rounded (Fig. 167).

Mesosoma black and shiny (Fig. 155). Each sidelobe of mesoscutum with 13 setae. Scutellum 1.0× as long as wide; with very weak engraved reticulation, posterior margin smooth (Fig. 168). Dorsellum anteriorly with a very narrow groove that is divided by longitudinal carinae (Fig. 742), groove medially 0.1× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 742); anteromedially with a transverse semicircular cup; propodeal callus with eight setae. Legs yellowish-white with fore and mid coxae white (Fig. 155). Fore wing: submarginal vein with four setae; costal cell on ventral surface with one row of setae, and margin with five setae close to marginal vein; with 20 admarginal setae, partly in two rows.

Gaster with anterior ½ white with dark brown lateral margins, followed by a wide dark brown transverse band, and with apex yellowish-brown (Fig. 158).

Ratios. HE/MS/WM = 2.3/1.0/1.3; POL/OOL/POO = 4.7/1.8/1.0; OOL/DO = 0.9; WE/WF/WH/HH = 1.0/2.0/4.2/3.0; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.4/2.2/5.7/1.3/1.3/1.0/1.7; LP/WP = 1.3; MM/LG = 1.2.

Male. Length of body 2.1 mm. Scape slightly expanded and widest in the middle (Figs 161), sensory pores confined to apicoventral ¾. Otherwise similar to female except gaster with posterior ½ dark brown (Fig. 159) and shorter.

Ratios. LC/WS = 2.5; MM/LG = 1.4.

Feeding on intermediate instar larva of Antiblemma ceras (Erebidae) feeding on Conostegia xalapensis (Melastomataceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Alajuela Province).

This species is named after Carl W. Rettenmeyer, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Cacao, Sendero Nayo, 22.vi.2008, M. Pereira, ex Sicya medangula eating Crossopetalum parviflorum, sibling of wasp DHJPAR0031152, 08-SRNP-35772” (BMNH). PARATYPES: 11♀ 1♂: COSTA RICA: Guanacaste: 6♀ 1♂ with same label data as holotype (BMNH, INBio, MZLU); Sector Cacao, Estación Cacao, 25.vi.2008, H. Ramirez, ex Prochoerodes marciana eating Prunus annularis, sibling of wasp DHJPAR0031155, 08-SRNP-35835 (3♀, in CNC, USNM); Estación Pitilla, LN 330200/380200, 700 m, vi.1996, C. Moraga & P. Rios (2♀, in INBio).

Lower face with median part yellowish-brown (female, Fig. 173) or yellowish-white (male, Fig. 174) reaching to level of outer margin of toruli; dorsellum without groove or foveae along anterior margin (Fig. 743); female with legs yellowish-brown with fore coxa yellowish-white (Fig. 172), male legs white with tarsi, apical ⅓ of hind femur and hind tibia yellowish-brown; petiole 1.3× as long as wide; gaster dark brown, anterior ½ white with dark brown lateral margins (Figs 175, 176); male antenna with scape expanded and widest in the middle, 2.3× as long as wide (Fig. 178).

Female. Length of body 2.2 mm. Antenna with scape yellowish-white, pedicel yellowish-brown, flagellomeres 1–2 pale brown, 3–6 dark brown (Fig. 177). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part yellowish-brown reaching to level of outer margin of toruli and parts between pale area and eyes black (Fig. 173). Frons close to eyes with two rows of setae (Fig. 183). Vertex smooth (Fig. 184). Occipital margin with a weak carina (Fig. 184).

Mesosoma black and shiny (Fig. 172). Each sidelobe of mesoscutum with 11 setae. Scutellum 0.9× as long as wide; with weak engraved reticulation (Fig. 185). Dorsellum without groove or foveae along anterior margin (Fig. 743). Propodeum smooth (Fig. 743); anteromedially with a semicircular cup; propodeal callus with nine setae. Legs yellowish-brown with fore coxa yellowish-white (Fig. 172). Fore wing: costal cell with two rows of setae on ventral surface, and margin with seven setae close to marginal vein; with 17 admarginal setae, in one row.

Gaster dark brown, anterior ½ white with dark brown lateral margins (Fig. 175).

Ratios. HE/MS/WM = 2.3/1.0/1.2; POL/OOL/POO = 7.0/5.0/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.5/4.6/3.2; WH/WT = 1.1; PM/ST = 1.8; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.0/2.2/6.7/2.6/1.4/1.0/1.4; LP/WP = 1.3; MM/LG = 1.2.

Male. Length of body 1.6 mm. Scape white, expanded and widest in the middle (Fig. 178), sensory pores confined to apicoventral ¾, sensory area pale as scape. Otherwise similar to female except pale area on lower face yellowish-white (Fig. 174); legs white with tarsi, apical ⅓ of hind femur and entire hind tibia yellowish-brown.

Ratios. LC/WS = 2.3; MM/LG = 1.2.

Feeding on intermediate instar larvae of Prochoerodes marciana feeding on Prunus annularis (Rosaceae), and Sicya medangula feeding on Crossopetalum parviflorum (Celastraceae) (both hosts are Geometridae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Charles D. Michener, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Horizones, 14.x.1997, gusaneros, ex Diastema tigris eating Lantana camara, no barcode, 97-SRNP-9717” (BMNH). PARATYPES: 3♀ with same label data as holotype (BMNH, INBio).

Lower face yellowish-white with median part yellowish-brown, leaving a black area close to eye as wide as shortest diameter of torulus (Fig. 78); vertex dark reddish-brown; legs yellowish-brown, fore and mid coxae yellowish-white (Fig. 77); petiole 1.0× as long as wide; gaster with anterior ½ yellowish-white and posterior ½ yellowish-brown, with dark brown lateral margins throughout (Fig. 79).

Female. Length of body 2.5 mm. Antenna with scape white with apical ½ yellowish-brown, pedicel yellowish-brown, flagellomeres pale brown (Fig. 80). Mandibles and palpi white. Head black and shiny, lower face yellowish-white with median part yellowish-brown, leaving a black area close to eye as wide as shortest diameter of torulus (Fig. 78); vertex dark reddish-brown outside ocellar triangle, black inside ocellar triangle. Frons close to eyes with two rows of setae (Fig. 84). Vertex smooth outside ocellar triangle, with very weak reticulation inside ocellar triangle (Fig. 82). Occipital margin with a carina (Fig. 82).

Mesosoma black and shiny (Fig. 77). Each sidelobe of mesoscutum with 15 setae. Scutellum 1.0× as long as wide; with rather strong engraved reticulation with elongate meshes (Fig. 86). Dorsellum anteriorly with a wide groove that is divided by longitudinal carinae (Fig. 744), groove medially 0.5× as long as length of dorsellum. Propodeum smooth (Fig. 744); anteromedially with a semicircular cup; propodeal callus with 11 setae. Legs yellowish-brown, fore and mid coxae yellowish-white (Fig. 77). Fore wing: costal cell on ventral surface with two rows of setae in basal ½ and one row in distal ½, and margin with three setae close to marginal vein; with 15 admarginal setae, in one row.

Gaster with anterior ½ yellowish-white and posterior ½ yellowish-brown, with dark brown lateral margins throughout (Fig. 79).

Ratios. HE/MS/WM = 2.0/1.0/1.5; POL/OOL/POO = 4.8/2.8/1.0; OOL/DO = 1.6; WE/WF/WH/HH = 1.0/2.4/4.5/3.3; WH/WT = 1.1; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.4/2.0/6.4/2.3/1.4/1.0/1.1; LP/WP = 1.0; MM/LG = 1.1.

Male. Unknown.

Feeding on last instar larva of Diastema tigris (Noctuidae) feeding on Lantana camara (Verbenaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Charles C. Porter, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Pasmompa, 26.xii.2007, C. Moraga & M. Rios, ex Letis mycerina eating Inga oerstediana, sibling of wasp DHJPAR0028698, 07-SRNP-34320” (BMNH). PARATYPES: 9♀ 1♂: Guanacaste: 6♀ 1♂ with same label data as holotype (BMNH, INBio, MZLU); 3♀ with same locality and host data but collected 8.xii.2007, sibling of wasp DHJPAR0028700, 07-SRNP-34119 (CNC, USNM).

Lower face with median part dark reddish-brown with two small yellowish-brown spots, pale area not reaching outside of outer lateral margins of toruli (Figs 190, 191); dorsellum anteriorly with a very narrow groove that is divided by longitudinal carinae (Fig. 745); legs yellowish-brown with fore and mid coxae yellowish-white (Fig. 189); gaster with anterior ½ white with dark brown lateral margins, posterior ½ dark brown (Figs 192, 193); petiole 0.8× as long as wide in female, 1.0× in male; male antenna with scape slightly expanded and widest in the middle, 2.9× as long as wide (Fig. 195).

Female. Length of body 2.0 mm. Antenna with scape yellowish-brown with base yellowish-white, pedicel yellowish-brown, flagellomere 1 pale brown, 2–6 dark brown (Fig. 194). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part dark reddish-brown with two small yellowish-brown spots, pale area not reaching outside of outer lateral margins of toruli, and with parts between pale area and eyes black (Fig. 190). Frons close to eyes with one row of setae (Fig. 200). Vertex smooth (Fig. 201). Occipital margin with a carina (Fig. 201).

Mesosoma black and shiny (Fig. 189). Each sidelobe of mesoscutum with nine setae. Scutellum 0.9× as long as wide; with very weak engraved reticulation (Fig. 202). Dorsellum anteriorly with a narrow groove that is divided by longitudinal carinae (Fig. 745), groove medially 0.1× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 745); anteromedially with a transverse triangular cup; propodeal callus with 13 setae. Legs yellowish-brown with fore and mid coxae yellowish-white (Fig. 189). Fore wing: costal cell with one row of setae on ventral surface, and margin with two setae close to marginal vein; with 13 admarginal setae, in one row.

Gaster with anterior ½ white with dark brown lateral margins, posterior ½ dark brown (Fig. 192).

Ratios. HE/MS/WM = 2.4/1.0/1.1; POL/OOL/POO = 8.0/4.6/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.4/4.4/3.3; WH/WT = 1.1; PM/ST = 1.6; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.6/2.2/5.6/1.7/1.3/1.0/1.6; LP/WP = 0.8; MM/LG = 1.2.

Male. Length of body 1.5 mm. Scape slightly expanded and widest in the middle (Fig. 195), sensory pores confined to apicoventral ¾, sensory area pale as scape. Otherwise similar to female except longer petiole.

Ratios. LC/WS = 2.9; LP/WP = 1.0: MM/LG = 1.2.

Feeding on penultimate instar larva of Letis mycerina (Erebidae) feeding on Inga oerstediana (Fabaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after D. Chris Darling, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Santa Rosa, 7.v.1995, gusaneros, ex Eulepidotis caeruleilinea eating Hymenaea courbaril, no barcode, 95-SRNP-3415” (BMNH).

Lower face medially yellowish-white with median ⅓ pale yellowish-brown, pale area reaching outside level of outer lateral margin of toruli, leaving a wide black stripe between pale area and eye (Fig. 95); fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 94); petiole 0.9× as long as wide; gaster with anterior ½ yellowish-brown with dark brown anterolateral margins and with posterior part of margins yellowish-brown, posterior ½ dark brown (Fig. 96). Euplectrus chrisgrinteri is very similar to E. ronniei, the only differences are the longer petiole in E. chrisgrinteri and different host preferences.

Female. Length of body 2.1 mm. Antenna with scape yellowish-white, pedicel and flagellomeres yellowish-brown (Fig. 97). Mandibles and palpi white. Head black and shiny, lower face medially yellowish-white with median ⅓ pale yellowish-brown, pale area reaching outside of level of outer lateral margins of toruli, leaving a wide black stripe between pale area and eyes (Fig. 95). Frons close to eyes with one row of setae (Fig. 101). Vertex smooth (Fig. 102). Occipital margin with a carina (Fig. 102).

Mesosoma black and shiny (Fig. 94). Each sidelobe of mesoscutum with 10 setae. Scutellum 1.0× as long as wide; with weak engraved reticulation (Fig. 103). Dorsellum anteriorly with a narrow groove that is divided by longitudinal carinae (Fig. 746), groove medially 0.3× as long as length of dorsellum. Propodeum with weak reticulation (Fig. 746); anteromedially with a semicircular cup; propodeal callus with eight setae. Fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 94). Fore wing: costal cell on ventral surface with one row of setae, partly with two rows close to base, and margin with three setae close to marginal vein; with 14 admarginal setae, in one row.

Gaster with anterior ½ yellowish-brown with dark brown anterolateral margins and with posterior part of margins yellowish-brown, posterior ½ dark brown (Fig. 96).

Ratios. HE/MS/WM = nm; POL/OOL/POO = 5.0/2.2/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.8/4.9/3.9; WH/WT = 1.0; PM/ST = 1.2; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.2/2.4/7.6/2.4/1.4/1.0/2.0; LP/WP = 0.9; MM/LG = 1.0.

Male. Unknown.

Feeding on last instar larva of Eulepidotis caeruleilinea (Erebidae) feeding on Hymenaea courbaril (Fabaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Chris C. Grinter, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Alajuela, ACG, Sector Rincón Rain Forest, Palomo, 18.vii.2013, K. Aragón, ex same as Noctuidae 11-SRNP-33495 eating Rhipidocladum racemiflorum, sibling of wasp DHJPAR0053131, 13-SRNP-68860” (BMNH). Paratypes: 4♀ 1♂ with same label data as holotype (BMNH, CNC, INBio, USNM).

Lower face with median part dark yellowish-brown reaching to level of middle of toruli (Figs 207, 208); legs yellowish-brown (Fig. 206); petiole 0.9× as long as wide; female gaster yellowish-white in anterior ½, yellowish-brown in posterior ½, lateral margins dark brown (Fig. 209); male scape slightly enlarged (Fig. 212), widest medially, 3.0× as long as wide, sensory area brown and reaching along ventral margin.

Female. Length of body 1.9 mm. Antenna with scape yellowish-white with apical ⅓yellowish-brown, pedicel yellowish-brown, flagellum dark brown with ventral part pale brown (Fig. 211). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part dark yellowish-brown reaching to level of middle of toruli (Fig. 207). Frons close to eyes with one row of setae (Fig. 217). Vertex smooth and shiny (Fig. 218). Occipital margin with a carina behind ocellar triangle (Fig. 218).

Mesosoma black and shiny (Fig. 206). Scutellum 1.0× as long as wide; with very weak reticulation (Fig. 219). Dorsellum along anterior margin with a deep groove (Fig. 747), groove medially 0.4× as long as length of dorsellum. Propodeum smooth and shiny (Fig. 747); anteromedially with a semicircular cup that is strongly raised in posterior part; propodeal callus with eight setae. Legs yellowish-brown (Fig. 206). Fore wing: costal cell with two rows of setae on ventral surface, and margin with two setae close to marginal vein; with 13 admarginal setae.

Gaster yellowish-white in anterior ½, yellowish-brown in posterior ½, lateral margins dark brown (Fig. 209).

Ratios. HE/MS/WM = 2.0/1.0/1.2; POL/OOL/POO = 4.5/2.3/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/3.0/5.2/3.8; WH/WT = 1.1; PM/ST = 1.3; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.7/2.0/6.3/2.2/1.3/1.0/1.8; LP/WP = 0.9–1.0; MM/LG = 1.0.

Male. Length of body 1.7 mm. Scape slightly enlarged, widest medially, with sensory pores along entire ventral margin, sensory area brown (Fig. 212). Similar to female except gaster with anterior ½ white with dark brown lateral margins, posterior ½ dark brown (Fig. 210).

Ratios. LC/WS = 3.0, LP/WP = 1.0.

Feeding on penultimate instar larva of noctuid 11-SRNP-33495 (Noctuidae) feeding on Rhipidocladum racemiflorum (Poaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Alajuela Province).

This species is named after Corrie S. Moreau, in recognition of her contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Del Oro, Rio Chon, 6.i.2008, R. Moraga, ex Hemiceras vecina eating Inga oerstediana, sibling of wasp DHJPAR0023280, 08-SRNP-20135” (BMNH). PARATYPES: 8♀: COSTA RICA (ACG): Guanacaste: 3♀ with same label data as holotype (BMNH, INBio); 4♀ with same data as holotype but sibling of wasp DHJPAR0023278, 08-SRNP-20132 (CNC, MZLU, USNM); Sector Brasilia, Piedrona, 24.vi.2008, D. Briceno, ex Hemiceras nigrescens eating Inga oerstediana, sibling of wasp DHJPAR0031185, 08-SRNP-65614 (1♀, in BMNH).

Lower face with median part yellowish-brown, pale area reaching to outer lateral margins of toruli (Fig. 112); fore and mid coxa yellowish-white, remaining parts of fore and mid legs and entire hind leg yellowish-brown (Fig. 111); scutellum 0.9× as long as wide with rather strong reticulation (Fig. 120); dorsellum with a very narrow groove along anterior margin (Fig. 748); median carina on propodeum narrow (Fig. 748); petiole 1.0× as long as wide; gaster dark brown, anterior ½ with a large yellowish-brown ±T-shaped spot (Fig. 113), and with tergites 5–6 reddish-brown posteromedially.

Female. Length of body 2.5 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel yellowish-brown, flagellomere 1 dark brown with ventral part yellowish-brown, 2–6 dark brown (Fig. 114). Mandibles and palpi white. Head black and shiny, lower face with median part yellowish-brown, pale area reaching to outer lateral margins of toruli, with parts between pale area and eyes black (Fig. 112). Frons close to eyes with one row of setae (Fig. 118). Vertex with very weak reticulation (Fig. 119). Occipital margin with a weak carina (Fig. 119).

Mesosoma black and shiny (Fig. 111). Each sidelobe of mesoscutum with 12 setae. Scutellum 0.9× as long as wide; with rather strong reticulation, meshes slightly elongate (Fig. 120). Dorsellum with a very narrow groove along anterior margin (Fig. 748), medially less than 0.1× as long as length of dorsellum. Propodeum smooth (Fig. 748); anteromedially with a short triangular cup, 0.3× as long as wide; propodeal callus with nine setae. Legs (Fig. 111): fore and mid coxae yellowish-white, remaining parts of fore and mid legs and entire hind leg yellowish-brown. Fore wing: costal cell with one row of setae on ventral surface, and margin with one seta close to marginal vein; with 15 admarginal setae, in one row.

Gaster dark brown, anterior ½ with a large yellowish-brown ±T-shaped spot (Fig. 113), and with tergites 5–6 reddish-brown posteromedially.

Ratios. HE/MS/WM = 2.3/1.0/1.3; POL/OOL/POO = 6.8/4.2/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.5/4.5/3.3; WH/WT = 1.0; PM/ST = 2.3; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.7/2.3/6.6/2.3/1.7/1.0/4.6; LP/WP = 1.0; MM/LG = 1.3.

Male. Unknown.

Feeding on third instar larvae of Hemiceras vecina and H. nigrescens (Notodontidae) feeding on Inga oerstediana (Fabaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Dave W. Roubik, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

In the analyzed material there are three females, not included here, from same locality and host as holotype but collected 23.xii.2007 (sibling of wasp DHJPAR0038555, 07-SRNP-24811). These specimens appear similar to E. daveroubiki, but the barcode is different from other samples of E. daveroubiki (Suppl. material 1, sample called E. Hansson32). All three specimens are damaged and because of this the morphological analysis can not be done with sufficient accuracy. Therefore we leave these specimens untreated for now, but in the future, as more material becomes available, this puzzle will be dealt with.

Another puzzle associated with the samples assigned to this species concern samples DHJPAR0031185 and DHJPAR0023280. Specimens from DHJPAR0031185 and DHJPAR0023280 are morphologically identical and have a similar biology (both target Hemiceras spp.), but with different barcodes (Suppl. material 1). Since the morphology and biology is the same we prefer to treat these as the same species.

See also remarks under E. roysnellingi.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Pasmompa, 24.ix.2005, gusaneros, ex Ceromacra Poole01 eating Guatteria diospyroides, sibling of wasp DHJPAR0028811, 05-SRNP-34118” (BMNH). PARATYPE: 1♀ with same label data as holotype (INBio).

Lower face medially yellowish-brown, pale area reaching to outer lateral margins of toruli (Fig. 129); scutellum transverse, 0.8× as long as wide, with very weak engraved reticulation, partly smooth (Fig. 137); dorsellum without spines posteromedially (Fig. 749); legs yellowish-white (Fig. 128); propodeum anteromedially with triangular cup short and wide (Fig. 749); petiole 1.0× as long as wide; gaster dark brown, anterior ½ with a large yellowish-white spot (Fig. 130).

Female. Length of body 2.0 mm. Antenna with scape and pedicel yellowish-brown, flagellomere 1 pale brown, 2–6 dark brown (Fig. 131). Mandibles and palpi yellowish-white. Head black and shiny, lower face medially yellowish-brown, pale area reaching to outer lateral margins of toruli, with parts between pale area and eyes black (Fig. 129), vertex dark brown. Frons close to eyes with one sparse row of setae (Fig. 135). Vertex smooth (Fig. 136). Occipital margin with a weak carina behind ocellar triangle (Fig. 136).

Mesosoma black and shiny (Fig. 128). Each sidelobe of mesoscutum with seven setae. Scutellum 0.8× as long as wide; with very weak engraved reticulation, partly smooth (Fig. 137). Dorsellum along anterior margin with a groove that is divided by longitudinal carinae (Fig. 749), groove medially 0.2× as long as length of dorsellum, median posterior margin of dorsellum without spines. Propodeum smooth (Fig. 749); anteromedially with a short and wide semicircular cup; propodeal callus with eight setae. Legs yellowish-white (Fig. 128). Fore wing: costal cell with two rows of setae on ventral surface, and margin with five setae close to marginal vein; with 25 admarginal setae, in two irregular rows.

Gaster dark brown, anterior ½ with a large yellowish-white spot (Fig. 130).

Ratios. HE/MS/WM = 1.8/1.0/1.1; POL/OOL/POO = 3.7/1.8/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.6/4.4/3.3; WH/WT = 1.1; PM/ST = 2.0; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 6.3/2.8/7.7/2.3/1.7/1.0/2.0; LP/WP = 1.0; MM/LG = 0.9.

Male. Unknown.

Feeding on second instar larva of Ceromacra Poole02 (Erebidae) feeding on Guatteria diospyroides (Annonaceae), parasitoid cocoons stuck to leaf substrate.

Costa Rica (Guanacaste Province).

This species is named after Dave R. Smith, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Euplectrus davesmithi and E. victoriapookae have the same barcode (Fig. 35, Suppl. material 1), but as they are morphologically distinct and their hosts are very different we treat them as separate species.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector San Cristobal, Tajo Angeles, 25.x.2010, G. Sihezar, ex Hypena Poole36 eating Drymonia macrophylla, sibling of wasp DHJPAR0042122, 10-SRNP-6218” (BMNH). PARATYPES: 10♀ 5♂, COSTA RICA (ACG): Guanacaste: 6♀ 1♂ with same label data as holotype (BMNH, INBio, MZLU, USNM); Sector Pitilla: Estación Pitilla, 1.iii.2011, M. Rios, ex Hypena Poole36 eating Drymonia alloplectoides, sibling of wasp DHJPAR0042397, 11-SRNP-30665 (1♀ 1♂, in INBio); Estación Quica, 8.i.2013, R. Calero, ex Hypena Poole36 eating D. alloplectoides, sibling of wasp DHJPAR0051510, 13-SRNP-70030 (1♀ 2♂, in BMNH); Quebradona, 7.i.2012, R. Calero, ex Hypena Poole36 eating Columnea hirta, 12-SRNP-70083 and 12-SRNP-70084, no barcode (2♀ 1♂, in CNC, INBio).

Lower face with median part reddish-brown (female, Fig. 224) or yellowish-brown (male, Fig. 225), pale area reaching to outer lateral margins of toruli; legs yellowish-brown, fore and mid coxae yellowish-white in female (Fig. 223), white in male; petiole 1.0–1.1× as long as wide; gaster dark brown with a yellowish-white ±T-shaped spot in anterior ½ in female (Fig. 226), with anterior ½ white with dark brown lateral margins and posterior ½ dark brown in male (Fig. 227); male antenna with scape slightly expanded and widest in the middle, 3.0× as long as wide (Fig. 229).

Female. Length of body 2.5 mm. Antenna with scape yellowish-brown with base yellowish-white, pedicel yellowish-brown, flagellomeres dark brown (Fig. 228). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part reddish-brown, pale area reaching to outer lateral margins of toruli, with parts between pale area and eyes black (Fig. 224). Frons close to eyes with two rows of setae (Fig. 234). Vertex with very weak reticulation (Fig. 235). Occipital margin with a carina behind ocellar triangle (Fig. 235).

Mesosoma black and shiny (Fig. 223). Each sidelobe of mesoscutum with 14 setae. Scutellum 0.9× as long as wide; with weak engraved reticulation with slightly elongate meshes (Fig. 236). Dorsellum anteriorly with a groove that is divided by longitudinal carinae (Fig. 750), groove medially 0.3× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 750); anteromedially with a transverse semicircular cup; propodeal callus with eight setae. Legs yellowish-brown with fore and mid coxae yellowish-white (Fig. 223). Fore wing: costal cell with two rows of setae on ventral surface, and margin with five setae close to marginal vein; with 15 admarginal setae, in one row.

Gaster dark brown with a yellowish-white ±T-shaped spot in anterior ½ (Fig. 226).

Ratios. HE/MS/WM = 2.1/1.0/1.1; POL/OOL/POO = 7.4/4.2/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.5/4.6/3.5; WH/WT = 1.1; PM/ST = 2.0; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.7/2.0/6.0/2.0/1.4/1.0/1.4; LP/WP = 1.0–1.1; MM/LG = 0.9.

Male. Length of body 2.1 mm. Scape yellowish-white, slightly expanded and widest in the middle (Fig. 229), sensory pores confined to apicoventral ¾, sensory area pale as scape. Otherwise similar to female except lower face with pale part yellowish-brown (Fig. 225), fore and mid coxae white; gaster with anterior ½ white with dark brown lateral margins (Fig. 227).

Ratios. LC/WS = 3.0; MM/LG = 0.9.

Feeding on last instar larva of Hypena Poole36 (Erebidae) feeding on Drymonia macrophylla, D. alloplectoides and Columnea hirta (Gesneriaceae), parasitoid cocoons stuck to cadaver and leaf substrate.

Costa Rica (Guanacaste Province).

This species is named after David B. Wahl, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Sendero Nacho, 27.ix.2011, M. Rios, ex Antiblemma Poole21DHJ02 eating Meriania phlomoides, sibling of wasp DHJPAR0048227, 11-SRNP-32924” (BMNH). PARATYPE: 1♀ “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Sendero Laguna, 29.ix.2011, F. Quesada, ex Antiblemma Poole21DHJ02 eating Meriania phlomoides, sibling of wasp DHJPAR0046906, 11-SRNP-32973” (INBio).

Lower face with median part dark reddish-brown, pale area reaching to level of median part of toruli (Fig. 146); dorsellum without a groove or foveae along anterior margin (Fig. 751); fore and mid coxae white, remaining parts of fore and mid legs predominantly yellowish-white; hind leg yellowish-white (Fig. 145); petiole 1.3× as long as wide; gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Fig. 147). Morphologically identical to E. gavinbroadi.

Female. Length of body 2.2 mm. Antenna with scape and pedicel yellowish-brown, flagellomeres 1–2 pale brown, 3–6 dark brown (Fig. 148). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part dark reddish-brown, pale area reaching to level of median part of toruli, with parts between pale area and eyes black (Fig. 146). Frons close to eyes with one sparse row of setae (Fig. 152). Vertex with very weak reticulation (Fig. 153). Occipital margin with a carina behind ocellar triangle (Fig. 153).

Mesosoma black and shiny (Fig. 145). Each sidelobe of mesoscutum with eight setae. Scutellum 1.0× as long as wide, with weak reticulation (Fig. 154). Dorsellum without a groove or foveae along anterior margin (Fig. 751). Propodeum with very weak reticulation (Fig. 751); anteromedially with a semicircular cup; propodeal callus with nine setae. Legs (Fig. 145): fore and mid coxae white, remaining parts of fore and mid legs predominantly yellowish-white; hind leg yellowish-white. Fore wing: costal cell on ventral surface with one complete row of setae and with a short row with three setae in front of complete row, and margin with five setae in apical ½; with 19 admarginal setae, mainly in one row but with three rows in apical ⅓.

Gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Fig. 147).

Ratios. HE/MS/WM = 2.4/1.0/1.3; POL/OOL/POO = 4.3/1.9/1.0; OOL/DO = 1.2; WE/WF/WH/HH = 1.0/2.1/4.3/3.4; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.8/2.4/6.2/1.6/1.3/1.0/1.8; LP/WP = 1.3; MM/LG = 1.0.

Male. Unknown.

Feeding on intermediate and third instar larvae of Antiblemma Poole21DHJ02 (Erebidae) feeding on Meriania phlomoides (Melastomataceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Diana C. Arias-Penna, in recognition of her contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Cacao, Quebrada Otilio, 29.vii.2005, M. Pereira, ex Hemicephalis alesaDHJ01 eating Varronia inermis, sibling of wasp DHJPAR0028814, 05-SRNP-46906” (BMNH). PARATYPES: 7♀ 1♂ with same label data as holotype (BMNH, INBio, MZLU, USNM).

Head dark reddish-brown with lower face medially white with median part yellowish-white (female, Fig. 241) or completely white (male, Fig. 242), pale area reaching outside level of outer margins of toruli; scutellum with a small hump posteromedially (Fig. 253); legs yellowish-white with hind coxa and hind femur yellowish-brown (Fig. 240); petiole 0.8× as long as wide; female gaster with anterior ½ yellowish-brown and posterior ½ pale brown with a dark brown spot anteromedially, entire gaster with dark brown lateral margins (Fig. 243), male gaster with anterior ½ yellowish-white with dark brown anterolateral margins and posterior ½ dark brown (Fig. 244); male antenna with scape slightly expanded and widest in the middle, 3.2× as long as wide (Fig. 246), and with sensory area pale brown.

Female. Length of body 2.4 mm. Antenna with scape, pedicel and flagellomeres 1–2 yellowish-white, flagellomeres 3–4 pale brown, 5–6 dark brown (Fig. 245). Mandibles and palpi yellowish-white. Head dark reddish-brown and shiny, lower face medially white with median part yellowish-white, pale area reaching outside level of outer margin of toruli, and parts between pale area and eyes dark reddish-brown (Fig. 241). Frons close to eyes with two rows of setae (Fig. 251). Vertex with very weak reticulation inside ocellar triangle, smooth outside (Fig. 252). Occipital margin with a carina (Fig. 252).

Mesosoma black and shiny (Fig. 240). Each sidelobe of mesoscutum with 11 setae. Scutellum convex, with a small hump posteromedially and with a weak groove anteromedially (Fig. 253); 0.9× as long as wide; with weak engraved reticulation. Dorsellum anteriorly with a groove that is divided into two by a median longitudinal carina (Fig. 752), groove medially 0.4× as long as length of dorsellum. Propodeum smooth (Fig. 752); anteromedially with a transverse triangular cup; propodeal callus with seven setae. Legs yellowish-white with hind coxa and hind femur yellowish-brown (Fig. 240). Fore wing: costal cell with two rows of setae on ventral surface, and margin with four setae close to marginal vein; with 20 admarginal setae, in basal ⅓ in two rows and in apical ⅔ in one row.

Gaster with anterior ½ yellowish-brown and posterior ½ pale brown with a dark brown spot anteromedially, entire gaster with dark brown lateral margins (Fig. 243).

Ratios. HE/MS/WM = 1.8/1.0/1.1; POL/OOL/POO = 5.1/3.1/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.4/4.5/3.6; WH/WT = 1.1; PM/ST = 1.4; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.1/2.2/7.1/2.7/1.7/1.0/1.7; LP/WP = 0.8; MM/LG = 1.1.

Male. Length of body 2.2 mm. Scape slightly expanded and widest in the middle (Fig. 246), sensory pores confined to apicoventral ⅔. Otherwise similar to female except pale part of lower face completely white (Fig. 242), gaster with anterior ½ yellowish-white with dark brown anterolateral margins and posterior ½ dark brown (Fig. 244).

Ratios. LC/WS = 3.2.

Feeding on last instar larva of Hemicephalis alesaDHJ01 (Noctuidae) feeding on Varronia inermis (Boraginaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Don L. J. Quicke, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Alajuela, ACG, Brisanta, 25.vii.2007, D.Briceno, ex Argyrosticta vauaurea eating Phlebodium pseudoaureum, 07-SRNP-65277, sibling of wasp DHJPAR0028932” (BMNH). Paratypes: 173♀ 26♂: COSTA RICA (ACG): Alajuela: 45♀ 3♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, MIUCR, USNM); Sendero Juntas, ex A. bellinita eating Campyloneurum brevifolium, 1.v.2008, J.Perez, 08-SRNP-40975, sibling of wasp DHJPAR0031158 (30♀ 3♂, in BMNH, CNC, INBio, MIUCR, USNM); Guanacaste: Sector Pitilla: Estación Quica: ex A. bellinita eating Microgramma percussa, 13.ii.2010, R.Calero, sibling of wasp DHJPAR0039215, 10-SRNP-70776 (11♀ 1♂, in BMNH, INBio); ex A. bellinita eating Microgramma 22028, 24.i.2012, R.Calero, sibling of wasp DHJPAR0048966, 12-SRNP-70198 (6♀, in BMNH, INBio), from same host as previous but collected 21.ii.2012, sibling of wasp DHJPAR0048965, 12-SRNP-70197 (9♀, in BMNH, CNC, INBio, USNM); ex A. bellinita eating Campyloneurum angustifolium, 20.x.2010, R. Calero, sibling of wasp DHJPAR0042138, 10-SRNP-73132 (2♂, in INBio); 20.x.2010, R. Calero, sibling of wasp DHJPAR0042136, 10-SRNP-73145 (2♂, in BMNH); ex A. aurifundensDHJ02 eating Polypodium fraxinifolium, 21.vi.2010, R. Calero, 10-SRNP-71891, sibling of wasp DHJPAR0040316 (7♀, in CNC, USNM); ex Lophomyra tacitaDHJ02 eating M. percussa, 15.ii.2010, R. Calero, 10-SRNP-70813, sibling of wasp DHJPAR0039211 (1♀ 1♂, in INBio); ex L. tacita eating M. percussa, 11.iii.2013, sibling of wasp DHJPAR0052362, 13-SRNP-70422, (1♂, in BMNH); ex Noctuidae indet. eating C. angustifolium, 28.ii.2011, M. Rios, 11-SRNP-70529, sibling of wasp DHJPAR0042398 (21♀ 3 ♂, in BMNH, CNC, INBio, MIUCR, USNM); 28.ii.2011, M. Rios, 11-SRNP-70530, sibling of wasp DHJPAR0042522 (1♀ 1♂, in BMNH); 5.v.2011, R. Calero, 11-SRNP-71022, sibling of wasp DHJPAR0043271 (11♀ 1♂, in INBio, USNM); Quebradona: ex A. bellinita eating Niphidium oblanceolatum, 13.ii.2010, R. Calero, 10-SRNP-70785, sibling of wasp DHJPAR0039207 (1♀ 1♂, in INBio); 13.ii.2010, R.Calero, 10-SRNP-70789, sibling of wasp DHJPAR0039206 (1♀, in INBio); 15.iv.2010, R. Calero, 10-SRNP-71431, sibling of wasp DHJPAR0039591 (11♀ 2♂, in BMNH, CNC, USNM); 15.iv.2010, R. Calero, 10-SRNP-71432, sibling of wasp DHJPAR0039593 (1♀, in INBio); 15.iv.2010, R. Calero, 10-SRNP-71433, sibling of wasp DHJPAR0039592 (1♀ 1♂, in BMNH); ex Noctuidae indet. eating M. percussa, 11.i.2011, D.Martinez, 11-SRNP-70083, sibling of wasp DHJPAR0042127 (1♀, in INBio); Calma: ex A. bellinita eating N. oblanceolatum, 29.i.2010, M. Rios, 10-SRNP-70576, sibling of wasp DHJPAR0039218 (6♀, in CNC, USNM); ex L. tacita eating M. percussa, 26.xi.2010, R.Calero, 10-SRNP-73315, sibling of wasp DHJPAR0041745 (1♀ 1♂, in BMNH); Medrano: ex A. bellinitaDHJ01 eating P. fraxinifolium, 23.vi.2010, R. Calero, 10-SRNP-71904, sibling of wasp DHJPAR0040318 (8♀ 3♂, in CNC, INBio, USNM); Puntarenas: Monteverde, 1000–1350 m, 3–31.i.1993, Z. Fuentes, malaise trap, LN 250850/449250, #2584 (1♀, in INBio).

Female with lower face black with a small very dark reddish-brown spot medially, undelimited from surrounding parts of frons (Fig. 258), male with median part of lower face predominantly yellowish-brown, pale area reaching slightly outside of outer lateral margins of toruli (Fig. 259); legs yellowish-brown to yellowish-white (Fig. 257); petiole 0.5× as long as wide; female gaster with 1^st tergite dark brown with a yellowish-brown and inverted “T” medially (Fig. 260), male gaster with 1st tergite white with wide dark brown lateral margins and remaining tergites dark brown (Fig. 261); male antenna with scape with outer lateral surface yellowish-white and inner lateral surface pale brown, strongly swollen (Fig. 263), 1.4× as long as wide, with numerous sensory pores scattered all over the inner lateral surface.

Female. Length of body 2.1 mm. Antenna with scape and pedicel yellowish-brown, flagellum dark brown with ventral part of flagellomeres 1–3 yellowish-brown (Fig. 262). Mandibles and palpi yellowish-white. Head black and shiny, lower face black with a small very dark reddish-brown spot medially, that is undelimited from surrounding parts of frons (Fig. 258). Frons close to eyes with an irregular row of setae that is double in parts (Fig. 268). Vertex with very weak reticulation, areas lateral to posterior ocelli smooth (Fig. 269). Occipital margin with a carina behind ocellar triangle (Fig. 269).

Mesosoma black and shiny (Fig. 257). Mesoscutum with weak reticulation (Fig. 270). Scutellum 0.9× as long as wide; with very weak reticulation (Fig. 270). Dorsellum along anterior margin with a deep groove that is divided by longitudinal carinae (Fig. 753), groove medially 0.3× as long as length of dorsellum. Propodeum with very weak reticulation, smooth close to median carina (Fig. 753); anteromedially with a semicircular cup; propodeal callus with eight setae. Legs yellowish-brown with basal ⅓ of mid femur yellowish-white (Fig. 257). Fore wing: submarginal vein with four setae; costal cell with one complete row of setae on ventral surface, and margin with two setae close to marginal vein; with 14 admarginal setae in one row.

Gaster with 1^st tergite dark brown with a yellowish-brown inverted “T” medially, remaining tergites dark brown (Fig. 260).

Ratios. HE/MS/WM = 1.9/1.0/1.3; POL/OOL/POO = 8.4/4.1/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.0/4.3/3.0; WH/WT = 1.0; PM/ST = 1.7; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.8/2.8/7.0/2.5/1.6/1.0/1.8; LP/WP = 0.5; MM/LG = 1.0.

Male. Length of body 1.7 mm. Scape with outer lateral surface yellowish-white and inner lateral surface pale brown, strongly swollen (Fig. 263); with entire inner lateral surface with sensory pores. Similar to female except antenna with flagellomeres 1–2 yellowish-brown and 3–6 pale brown (Fig. 263), lower face with median part of lower face predominantly yellowish-brown, pale area reaching slightly outside of outer lateral margins of toruli, and with lower face drawn out and pointed (Fig. 259), fore and mid legs predominantly yellowish-white, gaster shorter, 1st tergite white with wide dark brown lateral margins and remaining tergites dark brown (Fig. 261).

Ratios. LC/WS = 1.4; MM/LG = 1.3.

Feeding on last instar larvae of Argyrosticta bellinita feeding on Campyloneurum brevifolium, C. angustifolium, Microgramma percussa, Microgramma 22028 and Niphidium oblanceolatum; A. bellinitaDHJ01 feeding on Polypodium fraxinifolium; A. vauaurea feeding on Phlebodium pseudoaureum; A. aurifundensDHJ02 feeding on P. fraxinifolium; Lophomyra tacita feeding on M. percussa; L. tacitaDHJ02 feeding on M. percussa; Noctuidae indet. feeding on C. angustifolium. All hosts are Noctuidae feeding on different species of Polypodiaceae. Parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Alajuela, Guanacaste and Puntarenas Provinces).

This species is named after Ed O. Wilson, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Medrano, 1.ix.2010, R. Calero, ex Oxidercia thaumantis eating Machaerium salvadorense, sibling of wasp DHJPAR0042124, 10-SRNP-72753” (BMNH). PARATYPES: 5♀: 1♀ with same label data as holotype (INBio), 4♀ with same data as holotype, but sibling of wasp DHJPAR0041821, 10-SRNP-72754 (CNC, INBio, USNM).

Lower face with median part dark reddish-brown, pale part reaching to level of median toruli (Fig. 163); legs yellowish-brown (Fig. 162); fore femur enlarged, 2.6× as long as wide (Fig. 162); hind tarsus laterally flattened with tarsomere 1 being the shortest (Fig. 424); petiole 1.0× as long as wide; gaster with anterior ½ yellowish-brown with dark brown lateral margins, posterior ½ dark brown (Fig. 164).

Female. Length of body 2.7 mm. Antenna with scape, pedicel and 1^st flagellomere yellowish-brown, flagellomeres 2–3 with basal ½ yellowish-brown and apical ½ dark brown, flagellomeres 4–6 dark brown (Fig. 165). Mandibles and palpi yellowish-brown. Head black and shiny, lower face with median part dark reddish-brown, pale part reaching to level of median toruli, with parts between pale area and eyes black (Fig. 163). Frons close to eyes with two irregular rows of setae (Fig. 169). Vertex with very weak reticulation (Fig. 170). Occipital margin with a carina behind ocellar triangle (Fig. 170).

Mesosoma black and shiny (Fig. 162). Each sidelobe of mesoscutum with 12 setae. Scutellum 0.8× as long as wide; with very weak reticulation (Fig. 171). Dorsellum along anterior margin with a deep groove that is divided by longitudinal carinae (Fig. 754), groove medially 0.4× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 754); anteromedially with a semicircular cup; propodeal callus with eight setae. Legs yellowish-brown (Fig. 162). Fore wing: costal cell on ventral surface with two complete rows of setae, three rows in some places, and margin with six setae close to marginal vein; with 22 admarginal setae, mainly in one row but with two rows in apical ⅓.

Gaster with anterior ½ yellowish-brown with dark brown lateral margins, posterior ½ dark brown (Fig. 164).

Ratios. HE/MS/WM = 2.1/1.0/1.1; POL/OOL/POO = 8.0/3.0/1.0; OOL/DO = 0.8; WE/WF/WH/HH = 1.0/2.2/4.5/3.3; WH/WT = 0.9; PM/ST = 1.9; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.8/2.8/7.8/1.0/1.5/1.5/3.5; LP/WP = 1.0; MM/LG = 1.0.

Male. Unknown.

Feeding on last instar larva of Oxidercia thaumantis (Erebidae) feeding on Machaerium salvadorense (Fabaceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is after Gary A. P. Gibson, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Estación Pitilla, 8.viii.2011, C. Moraga, ex Antiblemma Poole22 eating Henriettea tuberculosa, sibling of wasp DHJPAR0045450, 11-SRNP-32227 (BMNH). PARATYPES: 3♀ with same label data as holotype (BMNH, INBio).

Lower face with median part reddish-brown, pale area reaching to level of median toruli (Fig. 180); dorsellum without groove or foveae along anterior margin (Fig. 755); fore and mid coxae white, remaining parts of fore and mid legs predominantly yellowish-white, hind leg yellowish-white (Fig. 179); petiole 1.3× as long as wide; gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Fig. 181).

Female. Length of body 2.0 mm. Antenna with scape, pedicel and 1^st flagellomere yellowish-brown, 2 pale brown, 3–6 dark brown (Fig. 182). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part reddish-brown, pale area reaching to level of median toruli, with parts between pale area and eyes black (Fig. 180). Frons close to eyes with one sparse row of setae (Fig. 186). Vertex with very weak reticulation (Fig. 187). Occipital margin with a carina behind ocellar triangle (Fig. 187).

Mesosoma black and shiny (Fig. 179). Each sidelobe of mesoscutum with eight setae. Scutellum 1.0× as long as wide, with very weak reticulation (Fig. 188). Dorsellum without groove or foveae along anterior margin (Fig. 755). Propodeum with very weak reticulation (Fig. 755); anteromedially with a semicircular cup; propodeal callus with eight setae. Legs (Fig. 179): fore and mid coxae white, remaining parts of fore and mid legs predominantly yellowish-white; hind leg yellowish-white. Fore wing: costal cell with two complete rows of setae on ventral surface, and margin with seven setae in apical ½; with 22 admarginal setae, mainly in one row but with three rows in apical ⅓.

Gaster with anterior ½ yellowish-white with dark brown lateral margins, posterior ½ dark brown (Fig. 181).

Ratios. HE/MS/WM = 2.6/1.0/1.5; POL/OOL/POO = 4.0/2.1/1.0; OOL/DO = 1.1; WE/WF/WH/HH = 1.0/2.1/4.3/3.4; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.8/2.4/6.7/1.6/1.3/1.0/2.2; LP/WP = 1.3; MM/LG = 1.0.

Male. Unknown.

Feeding on last instar larva of Antiblemma Poole22 (Erebidae) feeding on Henriettea tuberculosa (Melastomataceae), parasitoid cocoons stuck to dead larva and substrate.

Costa Rica (Guanacaste Province).

This species is named after Gavin R. Broad, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Quebradona, 11.i.2011, D. Martinez, ex Erinnyis alope eating Carica papaya, sibling of wasp DHJPAR0042126, 11-SRNP-70078” (BMNH).

Lower face pale, medially yellowish-brown and laterally yellowish-white, with a narrow black stripe along eye margin (Fig. 197); fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 196); petiole 0.7× as long as wide; gaster with anterior ½ yellowish-brown with dark brown lateral margins, posterior ½ dark brown (Fig. 198).

Female. Length of body 2.5 mm. Antenna with scape white, pedicel yellowish-brown, flagellomeres 1–3 dark brown with ventral part yellowish-brown, 4–6 dark brown (Fig. 199). Mandibles and palpi yellowish-white. Head black and shiny, lower face pale, medially yellowish-brown and laterally yellowish-white, with a narrow black stripe along eye margin (Fig. 197). Frons close to eyes with two rows of setae (Fig. 203). Vertex smooth (Fig. 204). Occipital margin rounded (Fig. 204).

Mesosoma black and shiny (Fig. 196). Each sidelobe of mesoscutum with 18 setae. Scutellum 0.9× as long as wide; with very weak reticulation (Fig. 205). Dorsellum along anterior margin with a narrow groove that is divided by longitudinal carinae (Fig. 756), groove medially 0.2× as long as length of dorsellum. Propodeum smooth (Fig. 756); anteromedially with a semicircular cup; propodeal callus with ten setae. Fore and mid legs yellowish-white, hind leg yellowish-brown (Fig. 196). Fore wing: submarginal vein with six setae; costal cell with two rows of setae on ventral surface, and margin with three setae close to marginal vein; with 27 admarginal setae, in two irregular rows.

Gaster with anterior ½ yellowish-brown with dark brown lateral margins, posterior ½ dark brown (Fig. 198).

Ratios. HE/MS/WM = 2.0/1.0/1.2; POL/OOL/POO = 9.8/5.8/1.0; OOL/DO = 1.3; WE/WF/WH/HH = 1.0/2.4/4.5/3.3; WH/WT = 1.1; PM/ST = 1.9; TS1/TS2/LT/LT1/LT2/LT3/LT4 = nm; LP/WP = 0.7; MM/LG = 1.0.

Male. Unknown.

Feeding on intermediate instar larva of Erinnyis alope (Sphingidae) feeding on Carica papaya (Caricaceae), parasitoid cocoons stuck to cuticle of host larva.

Costa Rica (Guanacaste Province).

This species is named after Gerard Delvare, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a female labeled “COSTA RICA: Guanacaste, ACG, Sector Pitilla, Pasmompa, 18.ix.2005, M. Rios, ex Thysanopyga cermala eating Gouania polygama, sibling of wasp DHJPAR0028805, 05-SRNP-33942” (BMNH). PARATYPES: 11♀ 3♂: 5♀ 1♂ with same label data as holotype (BMNH, INBio, MZLU); following from same locality and host as holotype but collected 18.ix.2005, sibling of wasp DHJPAR0028810, 05-SRNP-33946 (2♀ 1♂, in CNC), 12.ix.2006, sibling of wasp DHJPAR0028862, 06-SRNP-34122 (4♀ 1♂, in BMNH, INBio, USNM).

Lower face with median part dark reddish-brown, pale part reaching only to inner lateral margins of toruli (Figs 275, 276); legs yellowish-brown (Fig. 274); petiole 1.0× as long as wide; gaster dark brown, anterior ½ with a large yellowish-brown (female, Fig. 277) or white (male, Fig. 278) spot, female with apex of gaster pale brown, in male dark brown; male antenna with scape expanded and widest slightly above the middle, 3.5× as long as wide (Fig. 280), flagellomeres 2–5 with a basal whorl of erect setae.

Female. Length of body 2.5 mm. Antenna with scape and pedicel yellowish-brown, flagellomere 1 pale brown, 2–6 dark brown (Fig. 279). Mandibles and palpi yellowish-white. Head black and shiny, lower face with median part dark reddish-brown, pale part reaching only to inner lateral margins of toruli, with parts between pale area and eyes black (Fig. 275). Frons close to eyes with three rows of setae (Fig. 285). Vertex smooth (Fig. 286). Occipital margin with a carina behind ocellar triangle (Fig. 286).

Mesosoma black and shiny (Fig. 274). Each sidelobe of mesoscutum with 13 setae. Scutellum 1.0× as long as wide; with weak engraved reticulation (Fig. 287). Dorsellum along anterior margin with a wide groove that is divided by longitudinal carinae (Fig. 757), groove medially 0.4× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 757); anteromedially with a semicircular cup that has posterior part strongly raised and distinctly higher than anterior part; propodeal callus with eight setae. Legs yellowish-brown (Fig. 274). Fore wing: costal cell with two irregular rows of setae on ventral surface, and margin with eight setae in apical ½; with 16 admarginal setae, in one row.

Gaster dark brown with apex pale brown, anterior ½ with a large yellowish-brown spot (Fig. 277).

Ratios. HE/MS/WM = 1.9/1.0/1.1; POL/OOL/POO = 4.0/2.4/1.0; OOL/DO = 1.5; WE/WF/WH/HH = 1.0/2.8/5.0/3.8; WH/WT = 1.1; PM/ST = 1.5; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.0/2.4/5.8/2.0/1.2/1.0/1.8; LP/WP = 1.0; MM/LG = 1.0.

Male. Length of body 2.1 mm. Scape slightly expanded and widest slightly above the middle (Fig. 280), sensory pores confined to apicoventral ⅔, sensory area pale as scape. Otherwise similar to female except flagellomeres 2–5 with a basal whorl of erect setae (Fig. 280); gaster shorter, and with apex dark brown (Fig. 278).

Ratios. LC/WS = 3.5; MM/LG = 1.2.

Feeding on last instar larva of Thysanopyga cermala (Geometridae) feeding on Gouania polygama (Rhamnaceae), parasitoid cocoons stuck to cuticle of host larva.

Costa Rica (Guanacaste Province).

This species is named after Henry K. Townes, in recognition of his contribution to the understanding of ACG Hymenoptera taxonomy.

Holotype a male labeled “COSTA RICA: Guanacaste, ACG, Sector Cacao, Quebrada Otilio, D. Garcia, ex Hemicephalis alesaDHJ01 eating Varronia inermis, sibling of wasp DHJPAR0028882, 06-SRNP-45315” (BMNH). PARATYPES: 14♂ with same label data as holotype (BMNH, CNC, INBio, MZLU, MIUCR, USNM).

Lower face predominantly white, pale area reaches almost to eyes (Fig. 214); scape slightly expanded and widest in apical part, 3.4× as long as wide (Fig. 216), sensory pores confined to apico-ventral part, this area is yellowish-brown; scutellum convex with very strong engraved reticulation (Fig. 222); legs yellowish-white (Fig. 213); petiole 0.8× as long as wide; gaster with anterior ⅔ white with anterolateral margins dark brown, margin broken medially by white stripe, posterior ⅓ dark brown (Fig. 215). With same host as E. donquickei, but male with less pointy lower face in E. howelldalyi.

Male. Length of body 2.0 mm. Antenna with scape yellowish-white with apex yellowish-brown, pedicel and flagellomeres 1–4 yellowish-brown, clava pale brown; scape slightly expanded and widest in apical part (Fig. 216), sensory pores confined to apico-ventral part, this area is yellowish-brown. Mandibles and palpi white. Head black and shiny, lower face predominantly white, (Fig. 214), pale area reaches almost to eyes. Frons close to eyes with one row of setae (Fig. 220). Vertex smooth (Fig. 221). Occipital margin with a strong carina behind ocellar triangle (Fig. 221).

Mesosoma black and shiny (Fig. 213). Each sidelobe of mesoscutum with 13 setae. Scutellum 1.0× as long as wide; with strong engraved reticulation (Fig. 222). Dorsellum anteriorly with a narrow groove, medially 0.3× as long as length of dorsellum (Fig. 758). Propodeum smooth (Fig. 758); anteromedially with a semicircular cup; propodeal callus with seven setae. Legs yellowish-white (Fig. 213). Fore wing: costal cell with two rows of setae on ventral surface, and margin with four setae close to marginal vein; with 19 admarginal setae, in one row.

Gaster with anterior ⅔ white with anterolateral margins dark brown, margin broken medially by white stripe, posterior ⅓ dark brown (Fig. 215).