Arenivaga nicklei, 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 : 87-88

Arenivaga nicklei sp. n. Figures 114-116

Type locality.

MEXICO, BC, 14.4 mi S Campo Alfonsina.

Material examined.

Holotype: ♂ in SDMC labeled "MEX: Baja Cal. Nor., 14.4 mi. S. Campo Alfonsina, X-20/26-87, Norris Bloomfield, green dot" "HOLOTYPE Arenivaga nicklei Hopkins, 2012" [red label with black border].

Paratypes (16): MEXICO: BC, Isla San Lorenzo Sur, canyon at SW end, 7/27/1986, Weissman & Lightfoot, Stop #86-86 (7, CAS); BCS, 10 mi S of Punta Prieta, 6/21/1938, Michelbacher & Ross, photo.spec. (1, CAS); BC, Isla de Cedros, trail from El Pueblo to Cerro de Cedros, 9/28/1984, 0-180 m, Weissman & Lee, Stop #84-64 (1, CAS); BC, 19 mi SW of Campo Alfonsina (canyon), 10/27-28/1987, N Bloomfield, green dot (2, SDMC); BC, 14.4 mi S of Campo Alfonsina, 10/20-26/1987, N Bloomfield, green dot (4, SDMC). USA: AZ, Pima Co., Organ Pipe Cactus NM, 3/23/1953, & H Dietrich (1, CUIC). All paratypes labeled "Paratype Arenivaga nicklei Hopkins 2012" [blue label with black border].

Etymology.

The name is a noun in the genitive case. This species is named for Dr. David Nickle, who with Dr. Ashley Gurney was the last to work on revising Arenivaga and was most generous with his knowledge upon learning of my work.

Distribution.

This species in found in central Baja and the nearby islands. See Fig. 116.

Diagnosis.

Arenivaga nicklei can be distinguished by its very prominent lobe on the small central sclerite and two prominent spines on the medial margin of the right dorsal phallomere. See Fig. 115.

Description.

Male.Measurements. Holotype TL = 18.4 mm, GW = 9.5 mm, PW = 5.20 mm, PL = 3.94 mm, TL/GW = 1.94, PL/PW = 0.76. EW = 0.20 mm; OW = 0.35 mm. Among paratypes range of TL 16.1-20.0 mm; range of GW 6.75-9.5 mm; range of PW 5.00-6.05 mm; range of PL 3.94-4.23 mm.

Head. Two ocelli large, ovoid and protruding (0.40 × 0.30 mm); vertex medium brown with small ridges in rays around upper apices of eyes and extending onto ocellar tubercles; interocellar space concave, medium brown, with small round central indentation. Posterior frons waxy white, unusually wide, concave; anterior portion of frons bulbous and waxy white; waxy white smooth anteclypeus. See Fig. 114d.

Pronotum. Pronotum translucent waxy beige; dorsal surface of pronotum with short orange-brown setae that are thicker and longer laterally; pronotal pattern orange-brown to dark brown "panther face", with considerable detail no aura. See Fig. 114c.

Body. Wing brace present. Two tarsal claws present. Legs and body light brown; many specimens with yellow-brown maculations laterally on each sternite; subgenital plate light brown with darker margin; asymmetrical with rounded apices. See Fig. 114b.

Forewings. Wings extended well beyond abdominal apex (up to 30% of wing length); blotchy light to medium brown depending on specimen; surface matte and opaque. See Fig. 114a.

Genitalia. Right dorsal phallomere composed of lightly sclerotized, unusually long, bulbous hook-shaped lobe, articulated with right ventral phallomere on lateral side; medial side of lobe deeply emarginated from medial edge of remainder of phallomere; central field shallow, cupped, lightly sclerotized; medial margin more heavily sclerotized, smooth, with long posterior projecting spine and second medially projecting spine located midway along medial margin. Small central sclerite concave, punctate, with large shagreened medially projecting bulge on ventral edge, second smaller punctate bulge above first; right ventral phallomere extends from articulation to form shagreened rounded structure, with prominent medially projecting spine located posteriorly; attached anteriorly is mildly dorsally projecting flanged punctate concave arm, that extends beyond depth of rest of phallomere. Folded anterior portion of left phallomere tri-fold, with small bulge on posterior fold, setose. Genital hook with moderate extension to pointed head with slight indentation along line to moderate hook; arm with distinct bend. See Fig. 115.

Habitat and natural history.

All life history elements remain unobserved.