Arenivaga milleri, 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 : 81-82

Arenivaga milleri sp. n. Figures 102-104

Type locality.

USA, California, Mono Co., Benton.

Material examined.

Holotype: ♂ in FSCA labeled "Benton, Mono Co., Calif., VII-20-50, H. A. Hunt Collector" "HOLOTYPE Arenivaga milleri Hopkins, 2012" [red label with black border].

Paratypes (29): USA: CA, Mono Co., Benton, 7/16/1972 (7, CSCA); CA, Mono Co., Benton, 8/10/1972 (3, CSCA); CA, Mono Co., Benton, 7/10/1940, JG Shanafelt (3, LACM); CA, Mono Co., Benton Station, 6/10/1940, JG Shanafelt (2, LACM); CA, Mono Co., Benton, 8/5/1940, JG Shanafelt (3, LACM); CA, Mono Co., 4 mi N of Benton, 6/12-8/31/1980, 5600 ft., D Giuliani, antifreeze pit trap (1, CSCA); CA, Inyo Co., Fish Lake Valley, 6 mi S and 4 mi E of Oasis, 10/20/1983-6/1/1986, 5200 ft., D Giuliani, antifreeze pit trap (2, CSCA); CA, Inyo Co., 8/1/1922, OC Poling (1, ANSP); CA, Inyo Co., Westguard Pass, White Mts., 7/19/1968, J Scott, at light (1, EMEC); NV, Mercury, 8/9/1964, 12M(TB) (2, USNM); NV, Churchill Co., Blow Sand Mts., T15N, R30E, 8/2/1979, RC Bechtel, LM Hanks, DL Horton & RW Rust, Black Light Trap, 1 specimen- Arenivaga erratica Rehn det. RC Bechtel '80 (2, NVDA); NV, Churchill Co., Blow Sand Mt. 28 mi SSE Fallon, 8/3/1979, RW Rust, Arenivaga erratica Rehn det. RC Bechtel '80 (1, NVDA); NV, Washoe Co., Reno, 7/26/1982, JB Knight (1, NVDA). All paratypes labeled "Paratype Arenivaga milleri Hopkins 2012" [blue label with black border].

Etymology.

The name is a noun in the genitive case. This species is named for my PI Dr. Kelly Miller, an outstanding systematist, patient PI and friend, in grateful appreciation for giving the lover of cockroaches a place in your beetle lab.

Distribution.

This species is found in the Mohave Desert along the California-Nevada border and northwards. An isolated specimen from northwest California is probably mislabeled or transported. See Fig. 104.

Diagnosis.

Arenivaga milleri may be confused with Arenivaga belli but is distinguished by the lack of a spine on the medial margin of the right dorsal phallomere. See Figs 103 and 31.

Description.

Male.Measurements. Holotype TL = 17.9 mm, GW = 10.7 mm, PW = 6.05 mm, PL = 3.70 mm, TL/GW = 1.67, PL/PW = 0.61. EW = 0.40 mm; OW = 0.40 mm. Among paratypes range of TL 17.2-20.0 mm; range of GW 7.45-10.7 mm; range of PW 5.37-6.05 mm; range of PL 3.54-4.07 mm.

Head. Two ocelli very large, ovoid and protruding (0.4 × 0.25 mm); vertex brown with small ridges in rays around upper apices of eyes and extending onto ocellar tubercles; interocellar space deeply concave, smooth, brown fading to light brown at intersection with frons with two light brown circular indentations at base of interocular space. Posterior frons light brown fading quickly to waxy white, mildly concave with horizontal corrugations on brown portion, anterior portion of frons bulbous and waxy white; waxy white smooth anteclypeus. See Fig. 102d.

Pronotum. Pronotum translucent, waxy beige; dorsal surface of pronotum densely setose with fine light brown setae; pronotal pattern light orange-brown "panther face" with moderate detail discernible; no aura. See Fig. 102c.

Body. Wing brace present. Two tarsal claws present. Legs and body light brown; subgenital plate light brown with orange-brown margin; asymmetrical with rounded apices. See Fig. 102b.

Forewings. Wings extended well beyond abdominal apex (~30% of wing length); color light brown to medium brown depending on specimen and blotchy; surface matte and opaque. See Fig. 102a.

Genitalia. Right dorsal phallomere composed of bulbous lightly sclerotized hook-shaped lobe, articulated with right ventral phallomere on lateral side; central field lightly sclerotized; medial margin heavily sclerotized, shagreened, with slightly wavy toothed edge. Small central sclerite flat and finely punctate with posteriorly projecting, heavily toothed flanges dorsally and ventrally; right ventral phallomere extends from articulation to form structure rounded and punctate at posterior apex receding into narrower corrugations apically, followed by punctate rounded concave arm extending beyond depth of rest of phallomere. Folded anterior portion of left phallomere setose, otherwise unmodified. Genital hook with moderate extension to pointed head with very slight concavity on short hook; arm smoothly curving. See Fig. 103.

Habitat and natural history.

All life history elements remain unobserved.