Research Article |
Corresponding author: Katrina L. Menard ( katrina.menard@uconn.edu ) Corresponding author: Michael D. Schwartz ( mschwartz@amnh.org ) Academic editor: Fedor Konstantinov
© 2023 Katrina L. Menard, Michael D. Schwartz.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Menard KL, Schwartz MD (2023) Four new species of Phytocoris Fallén (Hemiptera, Miridae) from the Davis Mountains in Texas and further documentation of known species of Jeff Davis County. ZooKeys 1174: 97-139. https://doi.org/10.3897/zookeys.1174.107083
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A recent survey of the entomofauna of the Davis Mountains in the state of Texas has revealed four new species in the genus Phytocoris Fallén (Miridae, Mirinae, Mirini): Phytocoris mcivor sp. nov. and Phytocoris schmitzi sp. nov. found on Quercus grisea Liebmann, and Phytocoris marqua sp. nov. and Phytocoris rileyi sp. nov. found attracted to lights. Descriptions, habitus, and genitalic images for the new species are included herein. Further, habitus and genitalic photographs of known Phytocoris species from the county are included to aid in identification.
Biodiversity, Davis Mountains, Miridae, new species, USA
The Davis Mountains in Jeff Davis County, Texas, USA, is a unique geological feature in west Texas that encompass several different ecosystems and are the second tallest mountains in the state behind the Guadalupe Mountains in Culberson County. The summit, Mount Livermore, reaches more than 8378 feet, allowing it to maintain precipitation levels and plant fauna characteristic of other “sky islands” that are surrounded by arid environments (
An arthropod-based biodiversity survey of the Davis Mountains was undertaken at the largest land conservation area, the Nature Conservancy Davis Mountains Preserve, in 2020. Spearheaded by the entomologist Ashley Schmitz, the survey has a multi-year goal to document as much of the arthropod diversity as possible. The lead author was brought in to help identify the Heteroptera fauna being collected (Insecta, Hemiptera), and document possible new state records or new species on the endemic plants found nowhere else in the state. Collecting on grey oak (Quercus grisea Liebm.) adjacent to the Nature Conservancy McIvor Center and further south on Quercus gravesii Sudworth, two series of Phytocoris Fallén were found that did not key out to any currently known species. Subsequent review of other Phytocoris specimens collected from Jeff Davis County held at the Texas A&M University Entomology Collection (TAMU) led to the discovery of two other unknown species collected at lights from private property on the other side of the Davis Mountains.
Phytocoris the most specious genus in the family Miridae with more than 700 described species (
Focusing on west-Texas Phytocoris species,
Approximately 200 specimens were examined from fieldwork conducted by KLM in Texas as well as from material from various museums, including a synoptic set of Phytocoris species determined by Gary Stonedahl as part of his 1988 and 1995 works given to MDS at the Canadian National Collection. The undetermined Phytocoris sp. specimen collections from Texas A&M University from west Texas (Jeff Davis, Presidio, Brewster, Pecos, Culberson, and Reeves counties) were also surveyed for additional undescribed material in the series.
The following abbreviations are used for institutions cited in this paper:
USNM United States National Museum, Washington, District of Columbia, United States; Thomas Henry.
Terminology for male genitalia follows
Dorsal habitus images and genitalic images were taken with a JVC C-mount K Y-F75u digital camera attached to a Leica MZ16 dissecting microscope or an Olympus BX51 compound microscope using Auto-montage Pro (v. 5.02) image stacking software installed on a Dell Precision T1500 computer operating with Windows XP. Stacked images were combined using the compound weighted algorithm optimized for precision to obtain full depth of view habitus images.
Measurements were taken using an eyepiece micrometer (10 mm/100) on an Olympus SZX2 stereomicroscope and are shown in Table
Measurements (in mm). | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Species | Length | Width | |||||||||
Clyp-Memb. | Pronotum | Ant1 | Ant2 | Ant3 | Ant4 | Head | Pronotum | Hemelytra | InterOcDi | ||
P. marqua sp. nov. | |||||||||||
M (n = 3) | Mean | 3.96 | 0.44 | 0.64 | 1.16 | 0.27 | 0 | 0.44 | 0.77 | 1.33 | 0.2 |
SD | 0.26 | 0 | 0.04 | 0.04 | 0.46 | 0 | 0 | 0.02 | 0.07 | 0.01 | |
Min | 3.75 | 0.44 | 0.6 | 1.12 | 0 | 0 | 0.44 | 0.76 | 1.25 | 0.2 | |
Max | 4.25 | 0.44 | 0.68 | 1.2 | 0.8 | 0 | 0.44 | 0.8 | 1.38 | 0.2 | |
P. mcivor sp. nov. | |||||||||||
M (n = 2) | M1 | 4.875 | 0.48 | 0.68 | 1.4 | 0.68 | 0.56 | 0.6 | 0.88 | 1.625 | 0.16 |
M2 | 4.875 | 0.48 | 0.64 | 1.32 | 0.64 | 0.56 | 0.56 | 0.8 | 1.5 | 0.14 | |
F (n = 2) | F1 | 4.125 | 0.4 | 0.52 | 1.24 | 0.56 | 0.44 | 0.52 | 0.72 | 1.4375 | 0.18 |
F2 | 4 | 0.4 | 0.56 | 1.2 | 0.6 | 0.4 | 0.5 | 0.76 | 1.375 | 0.18 | |
P. rileyi sp. nov. | |||||||||||
M (n = 5) | Mean | 5.75 | 0.56 | 1.06 | 1.86 | 1.06 | 0.28 | 0.45 | 0.84 | 1.31 | 0.24 |
SD | 0.19 | 0.01 | 0.02 | 0.03 | 0.02 | 0.38 | 0.02 | 0.02 | 0.04 | 0.01 | |
Min | 5.5 | 0.54 | 1.04 | 1.84 | 1.04 | 0 | 0.44 | 0.8 | 1.25 | 0.22 | |
Max | 6 | 0.58 | 1.08 | 1.9 | 1.08 | 0.72 | 0.48 | 0.86 | 1.375 | 0.26 | |
F (n = 1) | 4.38 | 0.4 | 0.84 | 1.72 | 1.08 | 0.6 | 0.46 | 0.54 | 1.12 | 0.24 | |
P. schmitzi sp. nov. | |||||||||||
Male | 4.5 | 0.42 | 0.82 | 1.52 | 0.88 | 0.6 | 0.46 | 0.68 | 1.25 | 0.22 | |
Female | 5 | 0.44 | 0.88 | 1.68 | 0.92 | 0.6 | 0.48 | 0.76 | 1.44 | 0.24 |
For species distribution records in Jeff Davis County, direct observations were made of specimens from the
Holotype
male, pinned. Original label: “United States: Texas: Jeff Davis Co., Davis Mts. Resort, 5,800 ft. (Marqua residence), UV, 30.62842°N, 104.08360°W, VII-4-5-09, E & M. L. Riley,
This species shares the diagnostic characteristics of the rostratus group, particularly the brown to dark brown coloration, the subquadrate head with a broad vertex, a dorsum with narrow, dark, scale-like setae mixed with other types of vestiture, and male genitalia with greatly reduced primary membranous sac of endosoma with two sclerotized processes and patches of spinules on the basal lobes. It is unique, however, in the combination of characteristics of the male genitalia including: the tapered and narrow shape of the right sclerite of the male endosoma, and the lack of spines on the left paramere.
Male (n = 3): Macropterous, medium sized, lateral margins weakly convex. Total length clypeus to apex membrane from 3.75–4.25 mm, widest point across hemelytra 1.25–1.38 mm; general coloration dark brown (Fig.
Coloration. Head: predominantly dark brown in dorsal view, vertex with two parallel pale spots adjacent to eye margins at medians, frons with macula at approximate midline and anterior to lateral spots by eyes, area between antennal fossae and anterior margin of eyes also with narrow pale band, clypeus with narrow pale horizontal band on burgundy-brown background that transverses clypeus and genae medially in frontal view, maxillary plate with burgundy-brown stripe extending medially across into primarily whitish colored gena in lateral view, buccula burgundy-brown extending with darker coloration patterning along ventral margin of head including xyphus giving appearance of two horizontal dark stripes, labrum golden brown; labium basally burgundy on first segment, distally pale yellow-white on remaining segments; antennal segment I primarily dark burgundy-brown with pale maculae along anterior 2/3 of length and remaining length dark burgundy-brown, segment II with relatively narrow white band basally and wider band medially with remaining coloration dark brown, segment III with narrow pale band basally and remainder coloration dark brown, segment IV completely dark brown; eyes brownish burgundy. Thorax: dorsal 1/2 of propleura dark brown and whitish yellow on ventral 1/2, mesopleura dark brown excluding white margins along mesocoxa, metapleura dark brown with ostiolar peritreme and metathoracic spiracle whitish yellow, anterior of pronotum and collar whitish grey with two dark brown stripes extending anteriorly along lateral angles of calli onto collar, posterior pronotum primarily pale brown with irregular dark brown line weakly connected to darker lateral stripes on anterior portion contrasting with whitish coloration of pronotal posterior margin, mesoscutum dark brown with lateral 1/4 areas whitish yellow, scutellum primarily whitish yellow with dark brown inverted triangle-shape corresponding to brown area of mesoscutum along dorsal 1/2, distal 1/2 variously mottled with dark brown spots; all coxae pale yellowish white with metacoxae possessing dark brown spot on anterior-basal surface, all femora pale whitish yellow basally with increasing coverage of burgundy-brown maculae distally particularly on metafemora, tibiae primarily whitish yellow with burgundy-brown bands of maculae at basal and anterior margins as well as two defined bands medially to form four defined annuli, all tarsal segments dark brown. Hemelytra: predominantly greyish brown with darker blackish brown diffuse stripes along claval vein, cubitus, and costal vein, with dark and pale checkerboard pattern along costal margin and interior margin of cuneus adjacent to membrane, corium adjacent to medial 2/3 of cuneus with large whitish yellow patch extending distally into antero-lateral 1/3 of cuneus, with remaining cuneus dark brown with increasing number of blackish maculae distally towards membrane, membrane primarily comprised of brown maculae excluding two white patches along lateral margins adjacent cuneus apex, veins brown to dark brown. Abdomen: burgundy-brown, apex of lateral tubercle and distal margins of genital segment transitioning to greyish white coloration.
Surface and vestiture. Dorsal surface of head, pronotum, mesoscutum, scutellum and hemelytra with long black erect setae mixed with silvery-sericeous setae, hemelytral surface texture otherwise matte.
Structure. Head: clypeus not visible in dorsal view, vertex relatively rounded and slightly declining posteriorly and dorsal surface of eyes not surpassing vertex in lateral view, eyes relatively small with total height slightly < 1/2 total height head in lateral view, interocular distance slightly < 1/2 total width head, antennal segment I length > 1/2 length II antennal segment and width of head, apex of labium extending to hind coxae. Thorax: collar well-developed, pronotum trapezoidal in shape with developed calli and posterior margin weakly concave, mesoscutum and scutellum relatively flat with declining margins towards clavus, legs relatively narrow with hind legs elongate, pretarsi with convergent parempodia and developed pulvillus. Hemelytra: lateral margins weakly convex on distal 1/2, cuneus with angled declivity. Abdomen: < 1/2 of total body length, apex not reaching apex of wing membrane, genital capsule relatively large, nearly 1/2 total length of abdomen. Genitalia: Genital capsule with a well-developed tubercle on left margin weakly pointed at apex (Fig.
Female. Unknown
Measurements. Table
Unknown; collected at a light sheet.
Davis Mountains, Jeff Davis County, Texas.
Named for the late entomologist David Marqua, whose property in the Davis Mountains yielded this unique taxon during light sampling. Noun in apposition.
This species is most similar to Phytocoris kerrvillenis Stonedahl based on the shape of the right paramere (particularly the serrations on the dorsal margin), the well-developed tubercle, the rounded base of the right sclerite of the endosoma, and the reduced primary membrane. However, it can easily be separated by the different dorsal patterning, including the completely pale grey scutellum, completely dark brown posterior margin of the pronotum in P. kerrvillenis versus the dark and grey patterning in P. marqua. Further, the differences in the spines on the left paramere that are present on P. kerrvillenis but absent in P. marqua, and the tapered and narrow portion of the right sclerite in P. marqua that is relatively squat and broad in P. kerrvillenis separate the two.
Holotype
male, pinned. Original label: “United States: Texas: Jeff Davis Co.: Davis Mountains Nature Preserve, McIvor Conservation Center, 30.694554 -104.121378, 5902 ft, 17.v.2022, K Menard, UV light” (
Recognized by the following characteristics of the junceus species group, but unique in lacking a blunt tubercle on the male genital capsule: the large, elongate body form; short, elliptical head with large eyes, the slightly shiny dorsal surface, vestiture and scutellum without scale-like setae, the elongate right paramere, and the large and coarsely serrate sclerotized process of the endosoma.
Male (n = 3): Macropterous, medium sized, lateral margins parallel-sided. Total length apex to apex membrane 4.63–4.88 mm, widest point across hemelytra 1.5–1.63 mm; general coloration dark brown (Fig.
Coloration. Head: yellowish white with dark brown to black mottling across vertex and frons increasing in coverage ventrally, apical portion dark brown and ventral margins of clypeus, maxillary plate, and buccula white, labrum golden-brown; first segment of labium pale with thin red stripe along length, second and third segments yellowish, apical segment dark brown; antennal segment I primarily dark brown to black with relatively widely distributed pale maculae along length, segments II and III dark brown with narrow band of white at basal joint with previous segments, segment IV completely dark brown; eyes brownish burgundy. Thorax: dorsum of propleura dark brown on apical three-fourths with whitish coloration on ventral 1/4 adjacent to xyphus and part of procoxae, mesopleura dark brown excluding white margins of spiracle, metapleura dark brown with ventral ½ of ostiolar peritreme and all of spiracle whitish yellow (Fig.
Surface and vestiture. dorsal surface of head, pronotum, mesoscutum, scutellum and hemelytra with long black erect setae mixed with silvery-sericeous setae and some dark setae in defined patches on apex of clavus and interior margin of cuneus, hemelytral surface texture relatively smooth and shiny. Structure: Head: tylus and clypeus not visible in dorsal view, vertex relatively rounded and slightly declining posteriorly and dorsal surface of eyes surpassing vertex in lateral view, eyes relatively large with total height > 1/2 total height head in lateral view, interocular distance less than width of single eye, antennal segment I length greater than width of head, apex of labium extending to genital capsule. Thorax: collar relatively thin but well developed, pronotum trapezoidal in shape with developed calli and posterior margin weakly concave, mesoscutum and scutellum relatively flat with declining margins towards clavus, legs relatively narrow with hind legs elongate, pretarsus with convergent parempodia and developed pulvillus. Hemelytra: lateral margins parallel sided, cuneus with shallow declivity. Abdomen: ~ < 1/2 of total body length, apex not reaching apex of wing membrane, genital capsule relatively small being 1/3 total length of abdomen. Genitalia: genital capsule without a tubercule on left margin of gonopore. Endosoma with primary membranous sac developed into three well developed lobes, two of whose apices extend past adjacent sclerotized process anterior margin; right sclerotized process overall shape cone-like, with serrated margin on interior lateral edge comprised of nine “teeth” curved medially, bean-shaped sclerotized patch adjacent to median with spine-like processes (Fig.
Females (n = 2). Same as males in coloration, surface, vestiture and structure aside from being slightly smaller and having relatively wider interocular distance relative to width of head (Fig.
Measurements. Table
Quercus grisea Liebmann (Fagaceae).
Davis Mountains, Jeff Davis County and Brewster County, Texas.
Named for the McIvor Conservation Center of the Nature Conservancy’s Davis Mountains Preserve, where this species was discovered on an adjacent oak tree and light sheet. Noun in apposition.
Phytocoris mcivor sp. nov. appears to be most closely related to Phytocoris quercinus Stonedahl and Phytocoris intermontanus Stonedahl of
As
Holotype
male, pinned. Original label: “United States: Texas: Jeff Davis Co., Davis Mts. Resort, 5,800 ft, (Marqua residence), UV, 30.62842°N 104.0360°W, X-14-2011 E. G. Riley, X0891959” (
Belonging to the hopi group and distinguished by the combination of the relatively large size, the overall pale-beige coloration of the hemelytra with dark brown stripes on lateral margins of the head and pronotum, the white medial line extending along the apex of the scutellum to the median of the tylus of head, the yellowish coloration of the claval vein, and the elongate shape of the right paramere.
Male (n = 5): Macropterous, relatively large, lateral margins weakly convex. Total length apex to apex membrane 5.5–6 mm, widest point across hemelytra 1.25–1.375 mm; general coloration beige and brown (Fig.
Coloration. Head: primarily whitish beige with white midline stripe along length of head from base of vertex to median of tylus, dark narrow stripes along lateral margins of vertex as well as under eyes to antennal fossae, and horizontal dark stripe broken by vertical white stripe on top of vertex, frons with transverse dark markings associated with musculature attachment, maxillary plate whitish with dark ventral margin, buccula white, labrum white; first segment of labium pale, apical segments transitioning to dark brown; antennal segment I dark with dense white mottling and white stripe on latero-ventral surface extending three-fourths of basal length, segments II and III pale brown to beige with narrow band of white at basal joint with previous segments, segment IV completely dark brown; eyes pale pinkish brown. Thorax: propleura whitish beige with three narrow horizontal dark brown stripes corresponding with stripes on lateral side of head, anterior-most stripe corresponding to lateral margin of pronotum, mesopleura whitish beige with dark brown horizontal stripe roughly corresponding to medial stripe on propleura and additional dark stripe ventrally, metapleura mostly dark brown with ventral 1/2 of ostiolar peritreme, spiracle margins, and coxal margins white, pronotal collar with two sets of narrow vertical brown lines with one set corresponding to dorsal brown stripe of propleuron and other dark stripes on vertex, collar and pronotum primarily whitish yellow with elongate vertical white stripe with lateral dark brown margins extending to posterior margin of pronotum, at approximate median of pronotal length two additional vertical dark brown dashes on roughly parallel but removed from lateral margins, posterior of pronotum with diffuse darkening to pale brown adjacent to apical lateral margin above defined white line of posterior margin, mesoscutellum dark brown with two sets of whitish yellow markings adjacent to lateral angles, scutellum primarily whitish with dark brown M” shape medially; all coxae whitish beige with dark brown anterior margins on meso- and metacoxae, pro and mesofemora whitish yellow with dark brown spots forming diffuse vertical stripes on apical 1/2 to 2/3 length, metafemora primarily whitish yellow on ventral surface and dark brown on dorsal surface suffused with white spots, pro-tibiae and meso-tibiae white with faint pale brown spots, meta-tibiae whitish beige gradually darkening distally to pale brown adjacent tarsus and with short dark brown vertical stripe on ventral surface adjacent joint with femora as well as dark brown stripe ~ 1/5 of total length away from basal joint, all tarsal segments dark brown. Hemelytra: predominantly whitish beige to yellowish with dark brown stripes and markings, clavus whitish beige becoming more yellow in coloration adjacent claval vein, claval vein contrasting golden brown, corium anteriorly white suffusing with dark brown spots adjacent median of clavus, distally becoming yellow-white and then dark brown at apex with membrane, corium also with dark vertical lines corresponding with claval suture, cubitus and radial veins, brief white patch adjacent apex of radial vein on interior margin, cuneus beige-white with dark brown checkerboard patterning on interior margin with membrane, membrane with dense brown maculae and two white patches along lateral margins adjacent cuneus apex and along medial edge, anal ridge pinkish yellow, membrane veins beige. Abdomen: beige with defined horizontal black and white stripe along midline and diffuse dark brown horizontal streaks along dorsal and ventral surface, lateral tubercle beige, margin of genital segment thinly lined with dark brown to black.
Surface and vestiture. First antennal segment densely covered with whitish setae, dorsal surface of head, pronotum, mesoscutum, scutellum and hemelytra with long black erect setae mixed with silvery-sericeous setae distributed throughout as well as in defined areas such as patches of dark setae on apex of clavus, embolium, and interior margin of cuneus and white sericeous setae on medial stripe of mesoscutellum and scutellum, hemelytral surface texture otherwise matte; lateral margins of thorax and abdomen with distributed silvery sericeous setae.
Structure. Head: tylus and clypeus strongly produced and visible in dorsal view, tylus nearly projecting anteriorly beyond clypeus, vertex relatively flat and slightly declining posteriorly, and dorsal surface of eyes surpassing vertex in lateral view, eyes relatively small with total heigh eye > ½ total height head in lateral view, interocular distance greater than both eye widths combined, antennal segment I length greater than width of head, apex of labium extending almost to genital capsule. Thorax: collar relatively broad and well developed, pronotum elongate-trapezoidal in shape without well-developed calli and posterior margin relatively flat, mesoscutum and scutellum slightly rounded with declining margins towards clavus, legs narrow with hind legs especially elongate, pretarsus with convergent parempodia and developed pulvillus. Hemelytra: lateral margins parallel sided, cuneus with shallow declivity. Genitalia: Genital capsule with well-defined tubercle on left margin of gonopore (Fig.
Female. Similar to males in overall size and coloration, but with brachypterous wings whose apex barely surpasses median of abdomen length. Membrane reduced to sliver adjacent interior margins of cuneus (Fig.
Measurements. Table
Juniperus monosperma (Engelm.) Sarg. (Cupressaceae) and Baileya sp. (Asteraceae). Males also collected at a light sheet.
Jeff Davis Co., Texas and Catron Co. and Sandoval Co., New Mexico.
Named for Edward E. Riley, whose extensive fieldwork across Texas has led to the discovery of this species and many others. Noun in apposition.
This species clearly belongs in the
Only males were collected in Jeff Davis Co. and at lights, but subsequent investigation of undetermined Phytocoris material at the USNM revealed an additional single female and male specimen from New Mexico that included potential host plant information. As with other members of the hopi group, the female specimen is brachypterous with wings reduced to just the clavus and embolium. However, the overall coloration and patterning clearly matches the males, and we include this specimen’s information to round out our current knowledge of this species beyond Texas.
Holotype
male, pinned. Original label: “United States: Texas: Jeff Davis Co., Davis Mts Preserve, Madera Canyon Overlook Trail, 30.6961 -104.1234, 5937 ft, 30.viii.2022 K. Menard, found on Quercus gravesii (Fagaceae)” (
This species is diagnostic for the rostratus group based on the dark brown coloration, the subquadrate head with a broad vertex, a dorsum with narrow, dark, scalelike setae mixed with other types of vestiture, and male genitalia with greatly reduced primary membranous sac of endosoma with two sclerotized processes. It is unique, however, in the Z-like shape and spinose apex of the left endosomal sclerite in combination with the hook-like right endosomal sclerite.
Description. Male (n = 2): Macropterous, medium-sized, lateral margins relatively straight. Total length clypeus to apex membrane from 4.5 mm, widest point across hemelytra 1.25 mm; general coloration dark brown and grey (Fig.
Coloration. Head: predominantly pale brown in dorsal view, vertex with two small pale colored spots adjacent to eye margin and slightly darker horizontal line medially, frons with paler brown colored patterning associated with cyberium muscle attachment sites, clypeus dorsally pale with burgundy V-shaped pattern medially and parallel with antennal fossae and ventrally burgundy with two lateral white spots at apex, jugum white with dark burgundy horizontal band ventrad to antennal fossa in frontal view, maxillary plate and buccula burgundy-brown dorsally and ventrally white forming stripes that extend posteriorly, giving appearance of two horizontal dark stripes along head and continuing posteriorly behind eyes in lateral view, labrum pale white; labium basally pale white with first segment possessing short horizontal burgundy stripe that darkens distally to dark brown apex; antennal segment I dark burgundy-brown with pale maculae along dorsal surface, segment II pale brown with relatively narrow white band basally and slight darkening to darker brown on distal 1/3, segment III with narrow pale band basally and remainder color dark brown, segment IV completely dark brown; eyes brownish burgundy with some paler areas roughly corresponding to lateral stripe patterning on head. Thorax: propleura dark brown with white on ventral margin with procoxa, mesopleura dark brown excluding white margins along mesocoxa, metapleura dark brown with ostiolar peritreme and metathoracic spiracle whitish yellow, pronotal collar dark brown with narrow vertical white stripe medially and two laterally posterior to eyes (Fig.
Surface and vestiture. Dorsal surface of head, pronotum, mesoscutum, scutellum, and hemelytra with long black erect setae evenly distributed and mixed with silvery-sericeous setae as well as in defined patches such as the apex of the clavus, distal apex of the corial margin, and two patches adjacent margin of corium and cuneus with the wing membrane, hemelytral surface texture otherwise matte. Structure: Head: clypeus visible in dorsal view, vertex rounded and slightly declining posteriorly, dorsal surface of eyes not surpassing vertex in lateral view, eye height ~ 1/2 of total height of head in lateral view, interocular distance slightly < 1/2 total width head, antennal segment I relatively long with length nearly twice width head, apex of labium extending past hind coxae. Thorax: collar well-developed, pronotum trapezoidal in shape with faintly developed calli, posterior of pronotum with six weakly protruding tumid points adjacent posterior margin, posterior margin weakly concave in dorsal view, mesoscutum and scutellum relatively flat with declining margins towards clavus, legs relatively narrow with hind legs elongate, pretarsi with convergent parempodia and developed pulvillus. Hemelytra: lateral margins nearly parallel-sided, cuneus with weak declivity. Abdomen: less than ½ of total body length, apex not reaching apex of wing membrane, genital capsule relatively large, nearly 1/2 total length of abdomen. Genitalia: Genital capsule with relatively small but well-developed tubercle on left margin, pointed at apex (Fig.
Female. Similar to male in coloration and structure, but slightly larger in size.
Measurements. Table
Quercus gravesii Sudworth (Fagacaeae). One additional male was collected at lights.
Davis Mountains, Jeff Davis County, Texas.
Named for coleopterist Ashley Schmitz whose invitation to assist in the biodiversity survey of the Nature Conservancy property led to the discovery of this new species. Noun in apposition.
Two males and one female specimen was available for dissection and documentation of this new species; both males were dissected to confirm their species identity. One additional male was collected with this series but was teneral and therefore not measured or dissected. Phytocoris schmitzi also fits into the rostratus group of
Literature references: 1.
Davis Mountains Nature Preserve, McIvor Center. 30.6986, -104.1161, 5895 ft, 29.vii.2022, K Menard, found on Juniperus deppeana (Cupressaceae) (
Davis Mountains Nature Preserve, McIvor Center, 30.6986, -104.1161, 5895 ft. 29.vii.2022, K Menard, (
Davis Mountains State Park, V-25-2001, J Usener, MV (
Davis Mountains Resort, Marqua residence, 5800 ft, 30.62842°N, 104.08360°W, UV light, 14.x.2011, EG Riley, (
Davis Mountains Preserve, Madera Canyon Overlook Trail, 30.6961, -104.1234, 5937 ft, 30.viii.2022, K Menard, (
Davis Mountains Resort, D. Marqua residence, 5800 ft, 8.vii.1992, W Godwin & E Riley, (
Texas: Presidio Co.: Presidio, 29.56056°N, 104.37167°W, 788 m, 21.viii.1968, JE Hafernik, (
This species was recorded from the literature in Jeff Davis County by a paratype designated by Stonedahl deposited at the CAS. For documentation purposes of the habitus and male genitalia of this species, we utilized specimens from the synoptic set deposited at the
Davis Mountains Nature Conservancy, McIvor Center, 30.6986, -104.1161, 5895 ft, 29.viii.2022, K Menard, Quercus emoryii (Fagaceae) (
Presidio Co.: 29.vii.1968, ML Allender, (
Because only females were available for records in Jeff Davis County, male habitus and genitalia photos were taken from specimens collected in adjacent Presidio County.
Fort Davis State Park, 24.viii.1970, JR Sweet & MH Sweet (
Davis Mountains, Madera Canyon Road 0.5 mi S water pump, 30.6649, -104.1544, 6216 ft, 29.viii.2022, K Menard, found on Poaceae sweeping (
Davis Mountains Resort, 5800 ft, 24.ix.2005, DG Marqua, (
Brewster Co.: Big Bend National Park, Canyon Camp Area no. 4,4700 ft, 29°15'59"N, 103°14'04"W, 1.x.2005, Raber & Riley, 57 (
Habitus figures are from adjacent Brewster Co., Texas specimens because the lone male specimen of P. seminotatus from Jeff Davis Co. was directly pinned, and unfortunately broke in half when the genitalic capsule was being dissected. The component body parts were re-glued onto a card and associated with the genitalia, which was imaged for the manuscript.
Davis Mountain Nature Preserve, McIvor Conservation Center, 30.695554, -104.121378, 5902 ft, 17.v.2022 K Menard, UV light (
Arizona: Cochise County, vicinity of Portal, 2.v.1978, RT Schuh, collected on Larrea divaricata, (
This species is recorded on Larrea divaricata Cav. (
Davis Mountains Resort, Marqua residence, 5800 ft, 30.62842°N, 104.08360°W, UV light, 14.x.2011, EG Riley, (
This key addresses species included in this work; there likely are additional species residing in the county that are not yet documented. Other keys to species of Phytocoris include
1 | Head, pronotum and hemelytra completely to mostly grayish brown, brown or dark brown; no reddish tinge on any part of the wing | 2 |
– | Head, pronotum, and hemelytra may possess dark brown markings but not completely dark brown; instead, mostly light brown to beige, green, white, pink, or yellow; wings can have reddish coloration or marks | 9 |
2 | Head and pronotum with noticeable pale line medially, extending approximately from apex of the tylus to the posterior margin of the pronotum (Fig. |
Phytocoris cinereus |
– | Head and pronotum may be variously marked, but without obvious medial pale line as described above | 3 |
3 | Posterior of pronotum with pre-marginal dark brown and whitish line complete, extending along entire margin (Figs |
4 |
– | Posterior margin of pronotum without complete pre-marginal dark brown and whitish line or dark brown line medially thickened in form of inverted U-shape medially, not reaching lateral margins of pronotum (Figs |
8 |
4 | Hind femora dark brown with small white maculae widely distributed on ventral surface; no spots forming larger bands (Fig. |
Phytocoris baboquivari |
– | Hind femora dark brown with pale spots broadly forming bands that can extend onto dorsal surface (Figs |
5 |
5 | Endosoma with 1 sclerotized process (Figs |
6 |
– | Endosoma with 2 sclerotized processes (Figs |
7 |
6 | Single right sclerotized process of endosoma narrow and elongate (Fig. |
Phytocoris maricopae |
– | Single right sclerotized process of endosoma medially broad and roughly triangular (Figs |
Phytocoris juniperanus |
7 | Base of cuneus with white area adjacent to fracture terminated by horizontal dark brown band (Fig. |
Phytocoris marqua sp. nov. |
– | Base of cuneus with pale area adjacent to cuneal facture extending anteriorly into corium, without horizontal dark band but adjacent vertical dark bands (Fig. |
Phytocoris schmitzi sp. nov. |
8 | Sclerotized process of endosoma comprised of 9 continuous, medially curved “teeth” (Fig. |
Phytocoris mcivor sp. nov. |
– | Sclerotized process of endosoma comprised of 4 or 5 curved apical “teeth” and ≤3 basal “teeth”, medial region of sclerite lacking “teeth” (Fig. |
Phytocoris decurvatus |
9 | Hemelytron yellow, yellowish green to green | 10 |
– | Hemelytron variously colored but not yellow or green | 13 |
10 | Apex of scutellum and sometimes posterior margin of pronotum with 2 dark spots surrounded by white rings; hemelytron mottled light green and white (Fig. |
Phytocoris interspersus |
– | Scutellum without 2 dark spots | 11 |
11 | Length of antennal segment I twice width of head across eyes (Fig. |
Phytocoris seminotatus |
– | Length of antennal segment I less than width of head across eyes | 12 |
12 | Brownish yellow general coloration (Fig. |
Phytocoris ramosus |
– | Yellowish green general coloration (Fig. |
Phytocoris vanduzeei |
13 | Large, > 5.2 mm in length | 14 |
– | Smaller, < 5.2 mm in length | 15 |
14 | Hemelytron with pink areas along corium, especially visible in males (Fig. |
Phytocoris roseipennis |
– | Hemelytron without pinkish areas, beige to yellowish colored areas on clavus (Fig. |
Phytocoris rileyi sp. nov. |
15 | Hemelytron and cuneus unicolorous pale brown to pale grey with at most darkening around claval and cuneal margins | 16 |
– | Hemelytron and cuneus with distinct markings and patterning (Figs |
17 |
16 | Antennal segment I slightly longer than width head (Fig. |
Phytocoris varius |
– | Antennal segment I nearly twice as long as width head (Fig. |
Phytocoris schuhi |
17 | Body with an overall reddish coloration on the head, pronotum, scutellum, legs, and parts of the hemelytron (Figs |
18 |
– | Body without reddish coloration, at most hemelytron or cuneus with pink areas (Figs |
19 |
18 | Clavus and corium with simple setae mostly uniform in length, not coarse or bristle-like; hind femora mostly dark red with minute maculae; veins on wing membrane dark red; posterior pronotum with white margin (Fig. |
Phytocoris berbericola |
– | Clavus and corium with long, erect bristle-like setae; hind femora with dark reddish brown and pinkish white bands in addition to minute white maculae; veins on wing membrane light brown to pink; posterior of pronotum without white margin (Fig. |
Phytocoris listi |
19 | Cuneus dark brown from cuneal fracture to cuneal apex; no pink or reddish patches or tinge on cuneus (Fig. |
Phytocoris relativus |
– | Cuneus with pinkish tinge or pink patches (Figs |
20 |
20 | Scutellum unicolorous yellowish light brown (Fig. |
Phytocoris olseni |
– | Scutellum with at least 2 colors; endosoma without serrate sclerotized processes; right parameres not distinctly elongate | 21 |
21 | Dorsal surface of hemelytra with white and black scale-like setae intermixed with dark brown simple setae; posterior margin of pronotum with dark brown and white band (Figs |
Phytocoris simulatus |
– | Dorsal surface without scale-like setae, but with silvery sericeous setae and black simple setae (Fig. |
Phytocoris carnosulus |
We would like to thank Ashley Schmitz for inviting us to participate in the arthropod biodiversity inventory of the Nature Conservancy property, with which led to the discovery of these new species. Kaylee French, Charlotte Reemts, and Greg Crow of the Nature Conservancy were vital for securing the collecting permits and access to the wonderful facilities and the property. Jessica Hsiung of Agriculture and Agri-Food Canada helped create all of the figure plates. Chris Grinter and Rachel Diaz-Bastin of the California Academy of Sciences provided images of type specimens to verify the identity of P. carnulosus. Gary Stonedahl provided his synoptic set of taxa to the Canadian National Collection which proved invaluable for documenting the habitus and morphological characters of most species. Karen Wright and John Oswald of the Texas A&M Entomological Collection supplied the majority of specimens used to document the diversity of the county. Lastly, we would like to thank Drs Tomohide Yasunaga, Anna Namyatova, and Fedor Konstantinov for their comments and suggestions to improve the manuscript.
The authors have declared that no competing interests exist.
No ethical statement was reported.
No funding was reported.
Both authors contributed equally to this manuscript.
Katrina L. Menard https://orcid.org/0000-0003-0443-8440
All of the data that support the findings of this study are available in the main text.