Arenivaga pumila, 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 : 94-95

Arenivaga pumila sp. n. Figures 129-131

Type locality.

MEXICO, BCS, San Hilario.

Material examined.

Holotype: ♂ in CAS labeled "MEX., Baja Calif. Sur, San Hilario, El.1000', XI-5-68, E.L.Sleeper & F.J. Moore, Collected at BLACKLITE" "HOLOTYPE Arenivaga pumila Hopkins, 2012" [red label with black border].

Paratypes (33): MEXICO: BCS, 25 mi S of Santa Rosalia, 7/25/1938, Michelbacher & Ross, genitalia missing on one specimen (5, CAS); BCS, 5.7 mi SE of Mulege, 7/7/1979, Andrews, Hardy & Giuliana, walking dunes at night (1, CSCA); BCS, 38.8 km S of Santa Rosalia, 5/30/1973, Sleeper 61965-6, polyphagidae, Arenivaga n. sp. A, det. FW Fisk 81 (3, CSLB); BCS, 25 mi S of Santa Rosalia, 7/25/1938, Michelbacher & Ross, photo.spec. (1, USNM); BCS, 15 mi N of El Refugio, 7/4/1938, Michelbacher & Ross (7, CAS); BCS, Magdalena Bay, 7/18/1938, Ross & Michelbacher (1, CAS); BCS, Arroyo San Gregorio, 13 air km WNW of La Purissima, 4/24-26/1983, Wasbauer & Slansky, taken at lights (1, CSCA); BC, 4 mi NW of Rancho San Juan, 4/3-4/1961, AG Smith, at lantern (1, CAS); BCS, 27 mi W of La Paz, 11/18/1968, 1000 ft., Sleeper & Moore#1, E1, blacklite (1, CAS); BCS, 1/20-21/1980, Sleeper 77884.7 (1, CSLB); BC, 1 mi S of Mulege, 8/27/1959, Radford & Werner, light trap (1, UAIC); BCS, 5 mi S of Mulege, 10/15-16/1990, S McElfresh (2, UCRC); BCS, San Hilario, 11/5/1968, 1000 ft., Sleeper & Moore, blacklite (3, CAS); BCS, 7.4 km W of Santa Rita on road to Puerto Chale, river crossing at El Medano, 12/30/1978, Weissman,Love,Lee & Mullinex, Stop 79-12, polyphagidae (2, CAS); BCS, 9 km SE of Santa Rita (km 148), 8/25/1977, 75 m, Fisher & Westcott (1, CAS); BCS, 19 mi SW of San Miguel Comondu, 11/14-15/1968, 800 ft., Sleeper & Moore (1, CAS); BCS, 3.3 km S El Cien, 9/26/1981, D Faulkner & F Andrews, at blacklight (1, CSCA). All paratypes labeled "Paratype Arenivaga pumila Hopkins 2012" [blue label with black border].

Etymology.

The name is an adjective in the nominative singular. This species is named from the Latin meaning small or dwarfish because of its small size.

Distribution.

This species is found throughout Baja California Sur, Mexico. See Fig. 131.

Diagnosis.

Arenivaga pumila is easily distinguished by its small size. It is the smallest in overall size of the Arenivaga identified to date, though Arenivaga ricei is shorter in total length than some specimens of pumila.

Description.

Male.Measurements. Holotype TL = 14.2 mm, GW = 7.0 mm, PW = 4.16 mm, PL = 3.13 mm, TL/GW = 2.03, PL/PW = 0.75. EW = 0.05 mm; OW = 0.20 mm. Among paratypes range of TL 10.6-14.6 mm; range of GW 4.9-7.0 mm; range of PW 4.02-4.27 mm; range of PL 2.80-3.14 mm.

Head. Two ocelli large, ovoid and protruding (0.30 × 0.25 mm); vertex dark brown; interocellar space concave, dark brown. Posterior frons medium brown, concave; anterior frons light brown, bulbous, posterior margin with medial point; light brown anteclypeus. See Fig. 129d.

Pronotum. Pronotum translucent waxy beige; dorsal surface of pronotum with short orange-brown setae; pronotal pattern light to medium orange-brown or medium brown "panther face"; no discernible detail; no aura. See Fig. 129c.

Body. Wing brace absent. Two tarsal claws present. Legs and body light orange-brown; subgenital plate light orange-brown; asymmetrical with long apex pointed, short apex rounded. See Fig. 129b.

Forewings. Wings extended beyond abdominal apex (up to 40% of total wing length); blotchy medium orange-brown to medium brown; surface translucent, matte or with slight sheen. See Fig. 129a.

Genitalia. Right dorsal phallomere composed of lightly sclerotized, bulbous lobe, articulated with right ventral phallomere on lateral side; central field lightly sclerotized, deeply cupped; punctate as approaching medial edge which is toothed and has central concavity. Small central sclerite in two parts, lightly sclerotized, finely punctate; first part concave with slight anterior bulge, posterior end connecting with dorsal side of right dorsal phallomere; second part small lightly sclerotized square sitting adjacent to bulge of first part; attached to anterior end of left phallomere. Articulation between right phallomeres extends into right ventral phallomere consisting of punctate to shagreened medially projecting lobe with central indentation; anteriorly narrow gap followed by shagreened flange. Folded anterior portion of left phallomere dramatically modified into setose, medially projecting, scoop shape. Genital hook with moderate extension to pointed head and moderate hook; arm with distinct bend. See Fig. 130.

Habitat and natural history.

All life history elements remain unobserved.