A revision of the genus Arenivaga (Rehn) (Blattodea, Corydiidae), with descriptions of new species and key to the males of the genus Author Hopkins, Heidi text ZooKeys 2014 384 1 256 http://dx.doi.org/10.3897/zookeys.384.6197 journal article http://dx.doi.org/10.3897/zookeys.384.6197 1313-2970-384-1 832EF8274642416895252C2AD202EB9B Arenivaga grandiscanyonensis sp. n. Figures 69-71 Type locality. USA, Arizona, Mohave Co., Colorado River, Grand Canyon. Material examined. Holotype: ♂ in NAUF labeled "Mohave Co. AZ, Colorado R. GC, rm211.5R, 4/13/02, Coll. R.J.Delph, Ex: Light, Old High Water, blue label with '3'," "HOLOTYPE Arenivaga grandiscanyonensis Hopkins, 2012" [red label with black border]. Paratypes (2): USA: AZ, Coconino Co., Colorado River GC, 5/10/2001, J Rundall, rm160.5L, ex.light old high water, blue label '3' , 1 specimen--NAU 106 (2, NAUF). All paratypes labeled "Paratype Arenivaga grandiscanyonensis Hopkins 2012" [blue label with black border]. Etymology. This species is named for the only place this species has been documented, the Grand Canyon. Distribution. This species is found at the base of the Grand Canyon, Arizona. See Fig. 71. Diagnosis. Arenivaga grandiscanyonensis may be confused with Arenivaga pagana but may be distinguished by the shagreened tongue arching anteriorly out of the central field of the right dorsal phallomere. See Figs 70 and 121. Description. Male.Measurements. Holotype TL = 18.8 mm, GW = 9.2 mm, PW = 4.90 mm, PL = 4.28 mm, TL/GW = 2.04, PL/PW = 0.87. EW = 0.35 mm; OW = 0.30 mm. No notable differences in measurements among paratypes. Head. Two ocelli large, ovoid and protruding (0.35 x 0.25 mm); vertex medium brown with small ridges in rays around upper apices of eyes and extending onto ocellar tubercles; interocellar space concave, light brown, lighter brown medially, with two vertical indentations. Frons waxy white, posterior slightly concave; anterior portion of frons bulbous and waxy white; waxy white smooth anteclypeus. See Fig. 69d. Pronotum. Pronotum translucent waxy beige; dorsal surface of pronotum with short orange-brown setae that are slightly thicker laterally; pronotal pattern orange-brown "panther face", little discernible detail; no aura. See Fig. 69c. Body. Wing brace present. Two tarsal claws present. Legs and body pale beige; subgenital plate light brown with darker margin; asymmetrical with angular apices. See Fig. 69b. Forewings. Wings extended well beyond abdominal apex (~30% of wing length); translucent light beige and hyaline. See Fig. 69a. Genitalia . Right dorsal phallomere composed of a bulbous lightly sclerotized bulbous lobe, articulated with right ventral phallomere on lateral side; central field with anteriorly projecting flat shagreened arm with toothed edge. Small central sclerite with smooth curved sculpturing, posterior edge flattened and shagreened with laterally projecting smooth flap; right ventral phallomere extends from articulation to form smooth rounded structure becoming lightly punctate anteriorly; attached anteriorly is broad dorsally projecting punctate arm that extends only to depth of rest of phallomere. Folded anterior portion of left phallomere finely punctate, otherwise unmodified. Genital hook with short extension to pointed head with short hook and distinct bend in arm. See Fig. 70. Figure 69. Arenivaga grandiscanyonensis a dorsal habitus b ventral habitus c pronotum d head. Figure 70. Arenivaga grandiscanyonensis , genitalia: a) right dorsal phallomere b right ventral phallomere c small central sclerite d genital hook. Arrow(s) indicate diagnostic characters (see text). Figure 71. Arenivaga grandiscanyonensis , distribution. Habitat and natural history. All life history elements remain unobserved.