Arenivaga gurneyi, 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 : 64-65

Arenivaga gurneyi sp. n. Figures 78-80

Type locality.

MEXICO, Michoacan, Acahuato.

Material examined.

Holotype: ♂ in USNM labeled "Acahuato, Michoacan, MEXICO, Alt. 3000 ft., August 19, 1941, Coll. H. Hoogstraal" "HOLOTYPE Arenivaga gurneyi Hopkins, 2012" [red label with black border].

Paratypes (7): MEXICO: Michoacan, Acahuato, 8/19/1941, 3000 ft., H Hoogstraal (1, USNM); Michoacan, Acahuato, 8/19/1941, 3000 ft., H Hoogstraal, ‘035’ on 2 specimens (3, ANSP); San Jose Purua [locality decision by HHopkins 2012, specimens sent to ANSP], 8/4/1947, Hodge, Data uncertain. "San Jose Purua, Mex., VII-4-1947, Hodge" but may be San Jose de Pimas in Sonora near Hermosillo. Also may belong to ANSP, as I suspect this. 3 males. ABG (3, ANSP). All paratypes labeled "Paratype Arenivaga gurneyi Hopkins 2012" [blue label with black border].

Etymology.

The name is a noun in the genitive case. This species is named for the late Dr. Ashley B. Gurney, who with Dr. David Nickle was the last to work on revising Arenivaga .

Distribution.

This species is found in the state of Michoacan, Mexico. See Fig. 80.

Diagnosis.

Arenivaga gurneyi may be distinguished by the very short hook-shaped lobe on the right dorsal phallomere and the curious shape of the medial margin on same. See Fig. 79.

Description.

Male.Measurements. Holotype TL = 19.2 mm, GW = 9.8 mm, PW = 6.79 mm, PL = 4.43 mm, TL/GW = 1.96, PL/PW = 0.65. EW = 0.25 mm; OW = 0.50 mm. Among paratypes range of TL 18.0-21.6 mm; range of GW 8.7-10.3 mm; range of PW 6.30-7.73 mm; range of PL 4.20-5.03 mm.

Head. Two ocelli, somewhat smaller and rounder than usual, ovoid and protruding (0.35 × 0.30 mm); vertex medium brown, with small ridges between apices of eyes and extending onto ocellar tubercles; interocellar space concave, medium brown. Frons light brown; posterior tectiform horizontally with fine corrugations. Anterior frons slightly bulbous, light brown; light brown anteclypeus. See Fig. 78d.

Pronotum. Pronotum translucent waxy beige; dorsal surface of pronotum with orange-brown setae, dense in some specimens; pronotal pattern impressed, medium orange-brown, with lighter or much darker orange-brown aura depending on specimen; area of pattern too dark and often too setose to discern detail. See Fig. 78c.

Body. Wing brace absent. Two tarsal claws present. Legs and body medium orange-brown; subgenital plate orange-brown; asymmetrical with rounded apices. See Fig. 78b.

Forewings. Wings extended beyond abdominal apex (up to 30% of total wing length); blotchy medium to dark brown; surface opaque and matte. See Fig. 78a.

Genitalia. Right dorsal phallomere composed of lightly sclerotized cup, articulated with right ventral phallomere on lateral side; posterior projecting bulbous lobe entirely absent; medial edge with small smooth projection posteriorly, becoming more heavily sclerotized and punctate anteriorly, making right angle extending medially, ending in shagreened knob. Small central sclerite lightly sclerotized, finely punctate, existing only as flap attached to dorsal side of right angle and knob of dorsal phallomere. Articulation between right phallomeres deep, concave and setose, with toothed border adjacent to dorsal phallomere posterior end of which projects out to point. Right ventral phallomere consists of large punctate medially projecting lobe with central indentation; anteriorly is attached large shagreened anteriorly oriented pointed lobe. Folded anterior portion of left phallomere wide, setose, enclosed at both ends, otherwise unmodified. Genital hook widely curving to short point; arm slender. See Fig. 79.

Habitat and natural history.

All life history elements remain unobserved.