Arenivaga hypogaios, Hopkins, Heidi, 2014

Hopkins, Heidi, 2014, A revision of the genus Arenivaga (Rehn) (Blattodea, Corydiidae), with descriptions of new species and key to the males of the genus, ZooKeys 384, pp. 1-256 : 71-72

Arenivaga hypogaios sp. n. Figures 90-92

Type locality.

MEXICO, Coahuila, 15 mi N San Pedro de las Colonias.

Material examined.

Holotype: ♂ in USNM labeled "MEX: Coahuila 15 miles N of San Pedro de las Colonias, 2 Jul 1959, E.R.T." "HOLOTYPE Arenivaga hypogaios Hopkins, 2012" [red label with black border].

Paratypes (12): MEXICO: San Luis Potosi, Nunez 22 mi. NE of Villa Hidalgo, 8/27/1959, 4900 ft., Cohn & Cantrall, #37 (1, UMMZ); Coahuila, 15 mi. N of San Pedro de Las Cobrias, 7/2/1959, ERT (2, USNM). USA: TX, Terrel Co., Lozier Canyon, 7/8/1948, WL Nutting, Arenivaga sp. near rehni?, Det. WL Nutting 1950 (2, USNM). All paratypes labeled "Paratype Arenivaga hypogaios Hopkins 2012" [blue label with black border].

Etymology.

The name is a noun in the nominative singular. This species is named from the Greek meaning underground, in recognition of its subterranean life.

Distribution.

This species is found from the central Texas-Mexico border south through central Mexico including the states of Coahuila and San Luis Potosi. See Fig. 92.

Diagnosis.

Arenivaga hypogaios may be confused with Arenivaga florilega and Arenivaga galeana but may be distinguished by the difference in genital hooks, and the narrower anterior arm in Arenivaga hypogaios on the right ventral phallomere. Arenivaga hypogaios also has a ridge of serrations on the lateral side of the open field of the right dorsal phallomere which is not present in florilega or galeana. See Figs 91, 58 and 64.

Description.

Male.Measurements. Holotype TL = 23.0 mm, GW = 9.7 mm, PW = 6.92 mm, PL = 4.82 mm, TL/GW = 2.37, PL/PW = 0.70. EW = 0.20 mm; OW = 0.50 mm. Among specimens examined range of TL 17.4-23.0 mm; range of GW 8.2-9.7 mm; range of PW 6.34-6.92 mm; range of PL 4.45-4.82 mm.

Head. Two ocelli large, ovoid and protruding (0.50 × 0.40 mm); vertex dark brown, with small ridges between apices of eyes and extending onto ocellar tubercles; interocellar space concave, dark brown. Posterior frons light brown, tectiform horizontally then concave; anterior frons light brown, bulbous; light brown anteclypeus. See Fig. 90d.

Pronotum. Pronotum translucent waxy beige with dark brown posterior border; dorsal surface of pronotum with short orange-brown setae; pronotal pattern dark brown "hippo face"; impressed, no discernible detail; no aura. See Fig. 90c.

Body. Wing brace very small to absent. Two tarsal claws present. Legs and body light orange-brown; subgenital plate light orange-brown; asymmetrical with rounded apices. See Fig. 90b.

Forewings. Wings extended beyond abdominal apex (up to 40% of total wing length); light brown with widely scattered blotches medium orange-brown to medium brown; surface opaque and matte, or with slight sheen. See Fig. 90a.

Genitalia. Right dorsal phallomere composed of lightly sclerotized, long, bulbous lobe, articulated with right ventral phallomere on lateral side; central field lightly sclerotized, deeply cupped; very short punctate medial edge, short shagreened ridge on lateral side of cup. Small central sclerite lightly sclerotized, finely punctate, flat; posterior end connecting with dorsal side of right dorsal phallomere. Articulation between right phallomeres extends into right ventral phallomere consisting of punctate to shagreened medially projecting lobe that is medially flattened; anteriorly moderate gap followed by small shagreened flange open-ended anteriorly. Folded anterior portion of left phallomere wide, with dense, short setae medially, otherwise unmodified. Genital hook with short extension to pointed head and short, wide hook; arm robust with distinct bend. See Fig. 91.

Habitat and natural history.

All life history elements remain unobserved.