Stigmus congruus Walker, 1860; by original designation.

Holotype : ♀, China: Guizhou: Dabanshui Forest Park, 26°32'N, 106°45'E, 10.VII.2011, No. 201503448, coll. Dongdong Feng (YNAU). Paratypes: 1♀ same as holotype except: No. 201503452; 1♀, China: Yunnan: Renhe County, 22°57'N, 104°17'E, 3.X.2016, No. 201605802 (YNAU); 1♀, China: Yunnan: Mengla County: Shangyong: Huiqingzhai, 21°23'N, 101°28'E, 21.V.2005, coll. Peng Wang (YNAU).

This species is similar to C. iwatai (Tsuneki, 1954) in sharing: labrum pentagonal, round toward apex; free margin of clypeal lobe truncate medially (Fig. 2a); inter-antennal tubercle as long as midocellus diameter (Fig. 2b); upper frons with fine puncture; ocellar triangle nearly flat, with fine punctures, sparsely distributed; occipital carina narrowed, not foveolate (Fig. 2b); inner and outer-orbital sulcus broad as flagellomere 1 length (Fig. 2a); admedian line conspicuous (Fig. 2h); notaulus shallowly foveolate; parapsidal line conspicuous (Fig. 2e); mesopleuron with fine punctures, sparsely distributed, hypersternaulus broadened as midtibial width, conspicuously foveolate, scrobal sulcus foveate, short as mid trochanter length (Fig. 2d); propodeum strongly irregular reticulated ridged on propodeal enclosure and side, reticulates broad as Fig. 2i, with shiny interspace, propodeum with a smooth area posterodorsally; propodeum posterior surface with rectangular median groove, reticulate, a small smooth area medially, and irregular reticulation posteriorly (Fig. 2i); petiole side with few weak longitudinal carinae. Carinostigmus frontirugatus differs from C. iwatai by the following: clypeus moderately convex (Fig. 2a); inter-antennal tubercle distinctly broad at apex (Fig. 2b); median and lower frons rugose (Fig. 2a); upper frons longitudinal carina distinct, reaching anterior ocellus but weak (Fig. 2b); gena with dense, sturdy, oblique transverse rugae; lower gena with coarse punctures densely distributed; pronotal collar strongly elevated medially, lateral angles not so sharp as C. iwatai (Fig. 2e); scutum with several slender, transverse striations anteriorly (Fig. 2h); scutellum shiny; omaulus broadened as midtibial width (Fig. 2d); dorsal surface of petiole with dense weak longitudinal striations (Fig. 2c) and pygidial area punctate (Fig. 2g). Carinostigmus iwatai (Tsuneki) has following characters: clypeus slightly convex (Tsuneki 1954: fig. 12); inter-antennal tubercle not broad at apex (Tsuneki 1954: fig. 13); median and lower frons without rugae (Tsuneki 1954: fig. 12); upper frons longitudinal carina distinct anteriorly, not reaching anterior ocellus (Tsuneki 1954: fig. 12); gena with several sturdy, oblique transverse rugae near mandible area; lower gena with fine, sparsed punctures; pronotal collar not elevated medially, lateral angles sharp (Tsuneki 1954: fig. 10); scutum without transverse striations anteriorly; scutellum dull; omaulus narrowed; dorsal surface of petiole smooth and pygidial area punctate medially.

Female (Figs 2, 5a): Based on holotype, if any variation in paratypes described in square brackets.

Measurements.

BL: 6.2 [6–6.5] mm;

HW:HLD:HLF = 76:50:60;

HWmax:HWmin = 76:40;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 75:18:4:25:3:28:1:51;

AOD:WAS:IAD = 6:6:12;

POD:OOD:OCD:IODc:IODv:IODmin = 8:11:21:35:49:35;

LS:LP:LFI:WFI:LFII:WFII = 25:8:8:3:8:3;

LC:WC = 41:8;

PL:PW:LTI:WTI = 50:8:35:30.

Color pattern. Body black with shiny aspect, except the following: mandible medially (reddish brown apically), labrum, palpi, scape, pedicel, fore tibia and tarsus, mid tibia, trochanter and tarsus fulvous; flagellomeres dark brown [flagellomere I–II fulvous]; pronotal lobe whitish; tegula and forewing veins dark brown; hind trochanter reddish brown, tibia apically and tarsus dark brown; setae on margin of clypeus and on mandible pale.

Head. Mandible tridentate apically; setae on mandible sparse, long as pedicel length. Labrum pentagonal, round toward apex (Fig. 2a). Clypeus moderately convex, with coarse punctures, setae on margin of clypeus sparse, long as labrum length, free margin of clypeal lobe truncate medially (Fig. 2a). Median and lower frons rugose laterally, irregularly microstriate mesally, with a sturdy frontal median longitudinal carina, inter-antennal tubercle long, equal to midocellus diameter, distinctly broad at apex (Fig. 2a); upper frons with fine punctures, longitudinal carina distinct, reaching anterior ocellus but feeble (Fig. 2b), ocellar triangle nearly flat, with fine punctures, sparsely distributed (Fig. 2b); vertex behind ocelli shiny [dull], with fine sparsed punctures (Fig. 2b). Gena with dense sturdy transverse rugae, lower gena with coarse punctures. Occipital carina narrow, not foveolate (Fig. 2b); inner-orbital sulcus broad, with inner marginal carina distinct, inconspicuously foveolate (Fig. 2a); outer-orbital sulcus broad, hind marginal carina inconspicuous, inconspicuously foveolate.

Mesosoma. Pronotal collar with sparse, sturdy rugae laterally (Fig. 2d), strongly elevated medially, anterior pronotal ridge strong marked, lateral angles sharp and projected (Fig. 2e). Scutum with coarse [fine] puncture, sparsely distributed, several slender transverse striations anteriorly (Fig. 2h), fovea present on posterior margin (Fig. 2e); admedian line conspicuous, extending to one third of scutum length; notaulus shallowly grooved and foveolate, extending to one third of scutum length (Fig. 2h); parapsidal line conspicuous (Fig. 2e). Scutellum with fine punctures sparsely distributed; metanotum on laterals with sturdy, oblique ridged (Fig. 2e). Mesopleuron with fine punctures, sparsely distributed; omaulus and hypersternaulus broadened as midtibial width, distinctly foveolate; scrobal sulcus short as mid trochanter length, foveate (Fig. 2d). Propodeum strongly irregular reticulated ridged on propodeal enclosure and side, reticulates broad as Fig. 2i and with shiny interspace, smooth area posterodorsally; propodeum posteriorly with rectangular median groove, reticulate, a small smooth area medially, and irregular reticulation posteriorly (Fig. 2i); propodeal side presenting sparse, sturdy, longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 2d).

Legs. Outer surface of hindtibia without spines.

Metasoma. Petiole nearly cylindrical, slightly bowed, with dense weak rugose, basal and apical petiole width equal (Fig. 2c), lateral with few weak longitudinal carinae [carinae inconspicuous]. Gaster segments with fine sparsed puncture (Fig. 2f). Pygidial area punctate, oval and concave (Fig. 2g).

Male. Unknown

China (Guizhou, Yunnan).

The name frontirugatus, is junction of Latin words: front (= face) and rugatus (= rugae); referring to rugose on median and lower frons.

Holotype : ♀, China: Yunnan: Jinghong: Menghai: Bulang Mountain, 21°56'N, 100°26'E, 16–IX.14.VII.2018, No. 2019000499, Malaise trap (YNAU). Paratypes: 2♀♀, same data as holotype except: 25–V.17.IV.2018, No. 2019000009, 20–VIII.16.VII.2018, No. 2019000406; 1♀, China: Yunnan: Jinghong: Menghai: Guanggang Village: Guchalin, 21°56'N, 100°27'E, 27–V.16.IV.2018, No. 2019000082, coll. Malaise trap (YNAU); 1♀, China: Yunnan: Jinghong: Xishuangbanna National Forest Park, 22°01'N, 100°52'E, 31.VII.2003, coll. Qiang Li (ZJU); 1♀, China: Yunnan: Ruili: Mengxiu, 24°04'N, 97°47'E, 2–6.V.1981, No. 813076, coll. Junhua He (ZJU); 1♀, China: Fujian: Yongan County: Tianbaoyan, 25°56'N, 117°23'E, 15–18.VII.2001, No. 20020143, coll. Zaifu Xu (ZJU); 1♀, China: Hainan: Bawangling Mountain, 19°07'N, 109°05'E, 10.VI.2007, No. 200707357, coll. Jingxian Liu (ZJU); 1♀, China: Hainan: Diaoluo Mountain, 18°47'N, 109°52'E, 28.V.2007, No. 200707952, coll. Jingxian Liu (ZJU); 1♂, China: Yunnan: Pingbian: Baihushan, 22°59'N, 103°40'E, 17.VII.2003, 1310–1380 m, coll. Peng Wang (YNAU); 1♂, China: Yunnan: Ruili, 24°01'N, 97°51'E, 2.V.1981, No. 812495, coll. Junhua He (ZJU).

This species is similar to C. saigusai (Tsuneki, 1966) in having the following: labrum broad, wider than long, sub quadrate (Fig. 3j); vertex behind ocelli impunctate (Fig. 3b); gena with several sturdy oblique transverse rugae near mandible area; occipital carina narrowed, distinctly foveolate (Fig. 3b); inner and outer-orbital sulcus narrowed (Fig. 3a); notaulus inconspicuous; scutellum dull, with fine sparsed punctures (Fig. 3f); metanotum densely covered by sturdy longitudinal rugae; omaulus broad as midtibial width, scrobal sulcus absent (Fig. 3g); lateral surface of propodeum with sparsed sturdy or slender oblique longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 3g); petiole dorsal surface nearly cylindrical, slightly bowed (Fig. 3c). Distinguished from C. saigusai by setae on mandible short, shorter than pedicel length; clypeus with coarse punctures (Fig. 3a); free margin of clypeal lobe with four teeth, median lobe broadly produced, nearly truncate, with two small inconspicuous lateral teeth, slightly reflexed apically (Fig. 3j); median and lower frons dull (Fig. 3a); upper frons with fine punctures, frontal carina distinct anteriorly, not reaching anterior ocellus (Fig. 3b); pronotal collar slightly elevated medially; admedian line inconspicuous; parapsidal line well-marked (Fig. 3f); propodeal enclosure shallowly impressed, triangular; posterior surface of propodeum with triangular median groove, several fairly slender oblique longitudinal rugae anteriorly, and a large smooth area medially (Fig. 3k). Carinostigmus saigusai (Tsuneki) has the following characters: setae on mandible long; clypeus impunctate; free margin of clypeal lobe with three distinct teeth medially (Tsuneki 1966: fig. 25); median and lower frons not dull; upper frons impunctate, without frontal median carina; pronotal collar smooth; admedian line conspicuous; parapsidal line inconspicuous; propodeal enclosure deeply impressed, sub triangular; posterior surface of propodeum with rectangular median groove, and a small smooth area medially (Tsuneki 1966: fig. 27).

Female (Figs 3a–c, f–k, 5b): Based on holotype, if any variation in paratypes described in square brackets.

Measurements.

♀, BL: 5.4 [4.8–5.5] mm;

HW:HLD:HLF = 70:40:55;

HWmax:HWmin = 70:37;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 70:19:2:21:2:20:1:43;

AOD:WAS:IAD = 3:5:10;

POD:OOD:OCD:IODc:IODv:IODmin = 7:14:18:27:41:27;

LS:LP:LFI:WFI:LFII:WFII = 21:10:9:3:10:3;

LC:WC = 32:6;

PL:PW:LTI:WTI = 48:7:30:34.

♂, BL 4.2–4.7 mm;

HW:HLD:HLF = 62:33:47;

HWmax:HWmin = 62:30;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 62:17:2:19:2:20:1:41;

AOD:WAS:IAD = 3:5:8;

POD:OOD:OCD:IODc:IODv:IODmin = 5:11:13:23:38:23;

LS:LP:LFI:WFI:LFII:WFII = 19:7:7:2:8:2;

LC:WC = 27:5;

PL:PW:LTI:WTI = 45:6:25:25.

Color pattern. Body black with shiny aspect, except the following: mandible ivory white with yellowish translucent margins (at minus apically), labrum, palpi, scape ventrally, and pronotal lobe ivory white; scape dorsally, pedicel, flagellomeres I–III fulvous (remains progressively dark), and tegula fulvous; forewing veins brown to dark brown; fore coxa extensively, trochanter, tibia, tarsi yellowish to fulvous, rest dark brown; mid coxa extensively, trochanter, base and apex of femur, tibia, tarsi yellowish to fulvous, rest dark brown; hind coxa, trochanter, tarsus yellowish to fulvous, tibia basally ivory, remaining dark brown; pale setae on clypeal margin and on mandible.

Head. Mandible tridentate apically; short setae, shorter than pedicel length on mandible, sparsed. Labrum sub quadrate (Fig. 3j). Clypeus slightly convex [nearly flat], with coarse punctures; setae on margin of clypeus sparse, long (Fig. 3a, j); free margin of clypeal lobe with four teeth, median apical margin of clypeal disk produced, nearly truncate, with two small inconspicuous lateral teeth, slightly reflexed, a strong tooth on apical margin of each lateral lobe (Fig. 3j). Median and lower frons irregularly microstriate, inter-antennal tubercle short, less than midocellus diameter (Fig. 3a); upper frons smooth, with fine punctures, frontal carina distinct on frons, not reaching to midocellus (Fig. 3b). Ocellar triangle nearly flat, impunctate, vertex behind ocelli impunctate. Gena with several sturdy transverse rugae near mandible area, lower gena with fine punctures medially, sparsely distributed. Occipital carina narrow, foveolate (Fig. 3b). Inner-orbital sulcus narrowed as pedicel width, with inner marginal carina distinct, coarsely foveolate (Fig. 3a); outer-orbital sulcus narrowed as pedicel width, hind marginal carina inconspicuous, inconspicuously foveolate.

Mesosoma. Pronotal collar slightly elevated medially, anterior pronotal ridge strong, lateral angles sharp and projected (Fig. 3f). Scutum with coarse punctures, several slender transverse striations anteriorly, fovea present on scutum posterior margin (Fig. 3f). Admedian line and notaulus inconspicuous [notaulus invisible], extending to only anterior of scutum length, parapsidal line distinctly marked. Scutellum dull, with fine sparsed punctures (Fig. 3f). Metanotum densely covered by sturdy longitudinal rugae. Mesopleuron with sturdy, dense, short longitudinal rugae posteriorly, hypoepimeral area with several slender long longitudinal rugae, omaulus broad as midtibial width, hypersternaulus narrowed as pedicel width, distinctly foveolate, scrobal sulcus absent (Fig. 3g). Propodeal enclosure shallowly impressed, triangular, with sturdy longitudinal rugae, median area reticulate (Fig. 3k); posterior surface of propodeum with triangular median groove, several fairly slender oblique longitudinal rugae anteriorly, a large smooth area medially, and irregular reticulation posteriorly (Fig. 3k); propodeal side presenting sparsed oblique longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 3g).

Legs. Outer surface of hindtibia without spines.

Metasoma. Petiole dorsal surface nearly cylindrical, slightly bowed, basal and apical petiole width equal (Fig. 3c), side smooth. Gaster segments sterna IV–VI with dense fine punctures, remaining nearly impunctate (Fig. 3i). Pygidial area smooth, U-shaped, apex truncate (Fig. 3h).

Male. (Figs 3d, e, 5c). Same as female except labrum fulvous; mandible bidentate apically; labrum notched, with two triangular teeth apically; outer-orbital sulcus with hind marginal carina distinct, coarsely foveolate; flagellomeres without tyloids; admedian line and notaulus conspicuous, extending to half of scutum length; hypersternaulus broad as midtibial width; petiole widened toward apex slightly.

China (Yunnan, Fujian, Hainan).

The name latidentatus, is derived from the Latin words: lateralis (= lateral, side) contracted to lati and dentatus (= toothed, dentate), referring to the strong tooth on the apical margin of the lateral lobe of the clypeus.

Holotype : ♀, China: Yunnan: Jinghong: Menghai: Bulang Mountain, 21°57'N, 100°27'E, 17–VI.21.V.2018, No. 2019000099, Malaise trap (YNAU). Paratypes: 2♂♂, China: Yunnan: Dehong: Nabang, 24°26'N, 98°35'E, 15.V.2009, No. 201005191, coll. Jie Zeng, No. 201005205, coll. Manman Wang (YNAU); 1♂, China: Yunnan: Dehong: Yinjiang: Tongbiguan, 24°42'N, 97°55'E, 18.V.2009, No. 201005224, coll. Manman Wang (YNAU); 1♀, China: Yunnan: Nujiang: Fugong: Yueliang Village, 25°49'N, 98°51'E, 27.V.2007, coll. Feng Yuan (CAS); 1♀, China: Yunnan: Kaiyuan: Nandong, 23°40'N, 103°15'E, 16.VII.2003, coll. Qiang Li (YNAU).

This species resembles C. congruus (Walker, 1860) in sharing: median and lower frons microstriate, with a sturdy frontal median longitudinal carina (Fig. 4a); upper frons with fine and coarse punctures, frontal carina distinct anteriorly, not reaching anterior ocellus (Fig. 4b); ocellar triangle flat, gena with several sturdy oblique transverse rugae medially, lower gena with weak striations; outer-orbital sulcus broad; notaulus deeply grooved (Fig. 4j); propodeal enclosure triangular, with sturdy longitudinal rugae anteriorly, slender dense, longitudinal rugae laterally (Fig. 4k); pygidial area oval shaped (Fig. 4h). It can be differentiated from C. congruus by labrum, in female, pentagonal, longer than wide (Fig. 4a), in male, wider as long, deeply emarginated apically forming two rounded lobes (Fig. 4d); clypeus slightly convex; free margin of clypeal lobe nearly truncate medially, teeth inconspicuous (Fig. 4a); inter-antennal tubercle without T-shaped at apex (Fig. 4b); inner-orbital sulcus narrowed, inconspicuously foveolate (Fig. 4a); occipital carina foveolate (Fig. 4b); anterior pronotal ridge strongly marked (Fig. 4f); in female, fovea absent on scutum posterior margin (Fig. 4f); admedian line conspicuous in female, inconspicuous in male; parapsidal line conspicuous, and metanotum with inconspicuous rugae medially (Fig. 4f). Carinostigmus congruus (Walker) has the following characters: labrum triangular, broadly rounded at apex; clypeus strongly convex at middle; free margin of clypeal lobe slightly emarginate medially, with two distinct lateral small teeth (Krombein 1984: fig. 9); inter-antennal tubercle with T-shaped at apex (Krombein 1984: fig. 15); inner-orbital sulcus broad, distinctly foveolate (Krombein 1984: fig. 3); occipital carina not foveolate; pronotal collar ridged weakly marked; in female, fovea present on scutum posterior margin; admedian and parapsidal lines inconspicuous, and metanotum smooth medially (Krombein 1984: fig. 39).

Female (Figs 4a–c, f–k, 5d): Based on holotype, if any variation in paratypes described in square brackets.

Measurements.

♀, BL 4.6 [4.5–4.9] mm;

HW:HLD:HLF = 60:38:40;

HWmax:HWmin = 60:31;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 60:14:1:16:2:22:1:41;

AOD:WAS:IAD = 5:5:10;

POD:OOD:OCD:IODc:IODv:IODmin = 4:12:14:28:36:28;

LS:LP:LFI:WFI:LFII:WFII = 18:7:8:3:8:3;

LC:WC = 25:5;

PL:PW:LTI:WTI = 45:6:30:23.

♂, BL 4–4.6 mm;

HW:HLD:HLF = 65:35:43;

HWmax:HWmin = 65:31;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 65:18:1:18:2:20:1:40;

AOD:WAS:IAD = 3:3:8;

POD:OOD:OCD:IODc:IODv:IODmin = 4:10:12:20:36:20;

LS:LP:LFI:WFI:LFII:WFII = 20:8:8:2:8:2;

LC:WC = 23:5;

PL:PW:LTI:WTI = 46:6:27:25.

Color pattern. Body black with shiny aspect, except the following: mandible yellowish, apically dark; labrum yellowish with ivory marked medially; palpi pale; scape and pedicel extensively yellowish; flagellomeres I–III yellowish, remaining darker; pronotal lobe ivory with yellowish spot; tegula fulvous; forewing veins dark brown; legs fulvous except mid and hind femur reddish brown; pale setae on clypeal margin and on mandible.

Head. Mandible tridentate apically; setae on mandible sparsed, long, longer than labrum length. Labrum pentagonal, rounded toward apex (Fig. 4a). Clypeus slightly convex, with coarse punctures; setae on margin of clypeus sparsed, long as labrum length; free margin of clypeal lobe nearly truncate, sinuous, not forming reflexed teeth (Fig. 4a). Median and lower frons microstriate, with a sturdy frontal median longitudinal carina (Fig. 4a), inter-antennal tubercle short, less than midocellus diameter (Fig. 4b); upper frons smooth, with fine and coarse punctures, frontal carina distinct anteriorly, not reaching anterior ocellus (Fig. 4b). Ocellar triangle nearly flat, finely punctate [impunctate]; vertex behind ocelli, finely punctate [impunctate]; gena with several sturdy transverse rugae medially; lower gena with weak striations. Occipital carina broad and foveolate as Fig. 4b; inner-orbital sulcus narrow as flagellomere I width, with inner marginal carina distinct, inconspicuously foveolate (Fig. 4a); outer-orbital sulcus broad as pedicel width, hind marginal carina distinct, inconspicuously foveolate.

Mesosoma. Pronotal collar smooth, strongly elevated mesally, ridged inconspicuous anteriorly, weakly marked, lateral angles blunt (Fig. 4f). Scutum with fine punctures, sparsely distributed, several slender transverse striations anteriorly (Fig. 4j); admedian line conspicuous, extending to one third of scutum length; notaulus deeply grooved and foveolate, extending to only anterior of scutum length (Fig. 4j); parapsidal line inconspicuous (Fig. 4f). Scutellum dull aspect densely micropunctated; metanotum with dense, slender, longitudinal rugae laterally, weak medially (Fig. 4f). Mesopleuron with fine punctures, sparsely distributed; omaulus and hypersternaulus narrowed as pedicel width, inconspicuously foveate [distinctly foveolate]; scrobal sulcus absent (Fig. 4g). Propodeal enclosure shallowly impressed, triangular, with sturdy longitudinal rugae anteriorly, slender dense, longitudinal rugae laterally (Fig. 4k); propodeum posteriorly with oval median groove, slender dense transverse rugae anteriorly, smooth medially (Fig. 4k); propodeal side presenting obliques and regular striae, sparsely distributed (Fig. 4g).

Legs. Outer surface of hindtibia without spines.

Metasoma. Petiole dorsal surface sub quadrate (cross section), basal width narrower than apically (Fig. 4c), side smooth. Gaster segments III–V [IV–VI] with fine sparsed punctures, rest impunctate (Fig. 4i). Pygidial area punctate anteriorly, oval shaped (Fig. 4h).

Male (Figs 4d, e, 5e). Same as female except mandible ivory, reddish brown apically; labrum, scape beneath and pedicel ivory, remaining scape and flagellomeres fulvous; flagellomeres without tyloids; forewing veins brown to dark brown; legs ivory to fulvous; setae on margin of clypeus and on mandible fulvous and short, less than pedicel length; mandible bidentate apically; labrum notched, deeply emarginated at apex; clypeus slightly microstriate, convex, impunctate; gena with several sturdy oblique transverse rugae near eye; fovea present on scutum posterior margin; parapsidal line inconspicuous.

China (Yunnan).

The name vesulcatus, is derived from the Latin words ve- (= without) and sulcatus (= sulcate), referring to the scrobal sulcus absent.

1♀, China: Yunnan: Xishuangbanna: Mengla: Shangyong: Longmen Village, 21°16'N, 101°32'E, 10.IV.2010, 923 m, No. 201000068, coll. Rui Zhang (YNAU).

Female (Fig. 5f).

Head. Mandible tridentate apically. Labrum pentagonal, rounded toward apex (Fig. 2a). Clypeus moderately convex, with coarse punctures (Tsuneki 1976: fig. 124); free margin of clypeal lobe deeply emarginate medially (Tsuneki 1976: fig. 125). Median and lower frons striate (Tsuneki 1976: fig. 122); inter-antennal tubercle short, less than midocellus diameter, distinctly broad at apex (Tsuneki 1976: fig. 122); upper frons with coarse, dense punctures, frontal carina distinct, reaching anterior ocellus but feeble (Tsuneki 1976: fig. 122). Ocellar triangle moderately convex. Gena smooth, rugose ventrally (Tsuneki 1976: fig. 123). Occipital carina narrowed not foveolate, inner and outer-orbital sulcus broad (Tsuneki 1976: fig. 122).

Mesosoma. Pronotal collar smooth, strongly elevated medially, anterior pronotal collar ridged strong, lateral angles sharp and projected (Tsuneki 1976: fig. 126). Scutum with coarse sparsed punctures, slender transverse striations anteriorly, fovea present on scutum posterior margin, admedian line conspicuous, notaulus invisible, parapsidal line inconspicuous (Tsuneki 1976: fig. 126). Scutellum with fine, sparsed punctures, metanotum smooth. Mesopleuron with coarse, sparsed punctures, omaulus narrowed (Fig. 3g), hypersternaulus broad anteriorly, narrow apically, distinctly foveolate, scrobal sulcus short (Fig. 2d). Propodeal enclosure triangular, with sturdy longitudinal rugae; propodeum posterior with several slender oblique longitudinal rugae anteriorly, small smooth area medially, and irregular reticulation posteriorly; propodeum side with sparsed, slender oblique longitudinal rugae anteriorly, and irregular reticulation posteriorly.

Metasoma. Petiole dorsal nearly cylindrical, with dense weak transverse striations, basal and apical petiole width equal, side with weak striations. Gaster segments finely punctate. Pygidial area oval shaped (Fig. 4h).

China (Yunnan), Philippines.