Camarochilus picturatus, 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 : 26-27

Camarochilus picturatus , n. sp.

Figures 2 , 3 , 5–7 , table 1

HOLOTYPE: BOLIVIA: Cochabamba: Chapare: Rio Mamore, 2 km N. mouth of Rio Chapare , 16.33576°S 64.97551°W, 193 m, 20 Jul 1965 – 31 Jul 1965, J.K. Bouseman, 1♂ ( UCR _ ENT 00078394 ) ( AMNH).

DIAGNOSIS (figs. 1, 3, 5, 6): Recognized by the medium body size, medium-sized eyes, contrasting brown, castaneous, and pale yellow coloration of body and legs with strongly contrasting veins, and strongly asymmetrical pygophore with rounded right protuberance much larger and with larger spinelike setae. Most similar to C. americanus in shape and armature of the pygophore but is distinguished by the strongly contrasting pale membranal veins.

DESCRIPTION: Male: Total length 8.3 mm, ratio total length to corium width ~3.3, macropterous, hemelytron surpassing apex of abdomen. COLORATION: Dorsum brown with castaneous corium, membrane brown with pale yellow lines tracing corium margin and veins, dorsal laterotergites brown with triangular pale yellow marks; head brown with anteocular area lighter brown, labium brown, with distal margins of first, second, and third labial segments lighter brown, fourth segment pale yellow, antenna brown to pale yellow, legs pale yellow to light brown with forefemur brown, and middle and hind femora brown in distal 3/4, pleura brown to castaneous, abdominal mediosternites brown to castaneous, ventral laterotergites 2–6 with large pale yellow patches. SURFACE AND VESTITURE: As in generic description. STRUCTURE: Head ~1.6× 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 ~1.6× as long as scape. Labium as in generic description. Thorax as in generic description, anterior pronotal lobe ~5.8× longer than posterior lobe, posterior lobe narrow, finely punctate; scutellum with slender tip. Wings as in generic description with two clearly delimited cells in membrane. Legs as in generic description with ratio forefemur height to length ~0.29. Abdomen as in generic description. Genitalia with pygophore slightly asymmetrical, protuberances laterally rounded and dorsally flattened, right larger than left, spinelike setae on right stouter than on left, right and left with 20–25 conical, spinelike setae; parameres moderately stout, right slightly larger than left, sickle shaped with distal area longer than proximal, proximal area with dense, stout, and short setae, distal area flattened into blade, tapering to apex.

Female: As in generic description, submacropterous, total length ~ 8.1 mm, ratio total length to corium width ~2.8, ratio forefemur height to length ~0.39. Genitalia: as in generic description.

ETYMOLOGY: Named for the contrasting coloration of body, legs and hemelytron, after Latin picturatus , meaning “decorated with color.”

DISTRIBUTION: Known from low elevation Amazonian rainforest sites in Bolivia, Colombia, and Perú.

DISCUSSION: This species is very similar to C. americanus in general appearance and pygophore ornamentation. We nevertheless treat it as a distinct taxon, because the distribution ranges for the two species appear to be distinct and because of the strikingly contrasting pale membrane veins that set apart this species. We realize that this is another species hypothesis that will benefit from the examination of additional specimens of all species with strongly asymmetrical and similar pygophores (i.e., C. americanus , C. harrisi , and C. picturatus ; C. fasciatus , [pygophore missing] possibly belongs to this complex of species as well).

PARATYPES: COLOMBIA: Vaupes: Corregimiento Pacoa, Río Pira-Paraná, comunidad Santa Isabel Nyaba soa, 0.11853°S 70.18733°W, 04 May 2006 – 10 May 2006, J. Gonzales, 1♂ ( CEUA) . PERÚ: Loreto: Explorama Inn, 40 Km NE of Iquitos on Amazon River, 3.49346°S 72.99765°W, 97 m, 22 Aug 1992 – 24 Aug 1992, J. Castner and P. Skelley, 1♀ ( UCR _ ENT 00040774 ) ( BDGC) .

Figures

FIGURE 2. Dorsal habitus of Camarochilus spp. 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.