Camarochilus fasciatus, Weirauch & Forero & Schuh, 2020

Weirauch, Christiane, Forero, Dimitri & Schuh, Randall T., 2020, Taxonomic revision of Camarochilus Harris (Hemiptera: Pachynomidae), American Museum Novitates 2020 (3959), pp. 1-32 : 16-18

Camarochilus fasciatus , n. sp.

Figures 1 , 3 , 5–7 , table 1

HOLOTYPE: COLOMBIA: Cundinamarca: Anolaima , 4.7633°N 74.4683°W, 1604 m, 15 Apr 1992, I. Garcia, 1♂ ( UCR _ ENT 00021722 ) ( MPUJ).

DIAGNOSIS (figs. 1, 3, 5, 6): Recognized by the medium body size, medium-sized eyes, brown, castaneous, and pale yellow coloration with posterior pronotal lobe lighter than anterior lobe (figs. 1, 3). Similar to C. picturatus in the contrasting femur (brown) and tibia (pale yellow), but distinguished by the smaller size, concolorous membrane veins, and light- colored posterior pronotal lobe.

C. americanus Harris C. americanus Harris C. confusus Harris C. gilli , n. sp. C. globosus , n. sp. C. harrisi , n. sp.

C. medius , n. sp. C. picturatus , n. sp. C. robustus , n. sp.

DESCRIPTION: Male: Total length ~7.0 mm, ratio total length to corium width ~2.6. COLORATION: Dorsum brown with posterior pronotal lobe graded from lighter brown to pale yellow, corium castaneous, membrane brown with veins slightly lighter, dorsal laterotergites pale yellow with narrow brown band posteriorly; head and first labial segment brown, remaining segments lighter brown, scape and proximal pseudosegment of pedicel brown, remaining segment pale yellow, legs with coxae and femora brown, femora somewhat lighter distally, trochanters, tibiae, and tarsi light brown, pleura brown with posterior margin of propleuron lighter brown, abdominal mediosternites castaneous, ventral laterotergites 2–6 pale yellow with light brown posterior margins. SURFACE AND VESTITURE: As in generic description. STRUCTURE: Head ~1.3× as long as wide, eyes in dorsal view moderately large, shallow semiglobular, ratio head width to synthlipsis ~3.3, reniform in lateral view, dorsal eye margin barely reaching dorsal head surface. Antenna as in generic description, proximal pseudosegment of pedicel ~2.7× as long as scape. Labium as in generic description. Thorax as in generic description, anterior pronotal lobe ~6.6× longer than posterior lobe, posterior lobe narrow, rugose; scutellum with knob-shaped tip. Wings as in generic description with two clearly delimited cells in membrane. Legs as in generic description with ratio forefemur height to length ~0.33. Abdomen as in generic description. Genitalia: pygophore missing.

Female: Unknown.

ETYMOLOGY: Named for the contrasting coloration of the pronotum, with dark anterior and lighter posterior lobe, after Latin fasciatus , meaning “with stripe or band.”

DISTRIBUTION: Only known from the type locality in the department of Cundinamarca in Colombia. Compared with all other congeners, this species was collected at fairly high elevation (~ 1600 m) in the Cordillera Oriental west of Bogotá .

DISCUSSION: We are confident in establishing this new species based on the male holotype that lacks the pygophore for two reasons: coloration and size of the holotype and the highelevation type locality set this species apart from other here recognized species of Camarochilus . Colombia has the greatest diversity of Camarochilus species among all Central and South American countries ( C. americanus , C. fasciatus , C. gilli , C. globosus , C. harrisi , and C. tenuis ). However, C. americanus has only been collected in the extreme northern region of Colombia (south of the Sierra Nevada de Santa Marta), whereas C. gilli , C. globosus , and C. tenuis are known only from lowland Amazonian rainforest localities. The origin of C. harrisi in Colombia remains unknown because all known specimens were intercepted at Miami airport from an airplane that originated in Colombia.

Figures

FIGURE 1. Dorsal habitus of Camarochilus spp. Multiple male and female specimens are documented for C. americanus Harris to visualize intraspecific variation; one male and one female specimen (where available) are illustrated for other species. Scale bars = 2 mm.

FIGURE 3. Lateral habitus of Camarochilus spp. Scale bars = 2 mm.

FIGURE 5. Male and female genitalia of Camarochilus spp.: A–C, male abdomen and pygophore, ventral view; D–G, pygophore in situ, caudal (D–F) or dorsal (G) view; H–J, dissected pygophore, dorsal view. A, C. americanus (UCR_ENT 00021720); B, C. harrisi, n. sp. (UCR_ENT 00026326); C, C. picturatus, n. sp. (UCR_ENT 00078394); D, C. gilli, (UCR_ENT 00044348); E, C. picturatus (UCR_ENT 00078394), F, C. robustus, n. sp. (UCR_ENT 00026325); G, C. americanus (UCR_ENT 00021720); H, C. harrisi (UCR_ENT 00027097); I, C. globosus, n. sp. UCR_ENT 00021721); J, C. medius, n. sp., UCR_ENT 00046695. Abbreviations: ao, anterior opening of pygophore; br, sclerotized bridge between anterior and posterior opening of pygophore; gap8, 9, gonapophyses 8 and 9 (= valvula 1 and 2); gcx8, 9, gonocoxa 8 and 9 (valvifer 1 and 2); gpl, gonoplac (= styloid, valvula 3); lpa, left paramere; pg, pygophore; pgpl, left protuberance on pygophore; pgpr, right protuberance on pygophore; po, posterior opening of pygophore (hidden beneath proctiger); pt9, paratergite 9; pt, proctiger; s3–8, mediosternites 3–8; sc, scape; rpa, right paramere; t8–10, mediotergites 8 to 10; tr3–9, trichobothria on abdominal segments 3–9.

FIGURE 6. Pygophore of Camarochilus spp. in dorsal view, illustrating species-diagnostic differences in pygophore symmetry, size, shape, and degree of asymmetry of pygophore protuberances, and ornamentation as well as paramere shape for all species with known males. Abbreviations: lpa, left paramere; pgpl, left protuberance on pygophore; pgpr, right protuberance on pygophore; pt, proctiger; rpa, right paramere.

FIGURE 7. Distribution records of Camarochilus spp. examined. Some specimens were not mapped due to ambiguous localities. Camarochilus harrisi not mapped.