Arenivaga delicata, 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 : 40-41

Arenivaga delicata sp. n. Figures 39-41

Type locality.

USA, California, San Bernardino Co., Old Woman Mts.

Material examined.

Holotype: ♂ in LACM labeled "CALIF. S. Bdno. Co: nr Sunflower Wash, 3300 ft., Old Woman Mts., T5N R18E SW ¼ sec 5, 28-29 May '88, JP and KES Donahue, 121578" "HOLOTYPE Arenivaga delicata Hopkins, 2012" [red label with black border].

Paratypes (23): USA: CA, Riverside Co., N of Blythe, 1/29/1966, D Park, under rock on ground, Cal.Dept.Agr.6687-25 (1, CSCA); CA, Kern Co., 1 mi S of Willow Spring, 10/4/1960, WE Ferguson, at light (1, EMEC); CA, Riverside Co., 4 mi N of Blythe, 7/22/1975, Sumlin,Garcia & Drake, alluvial fan, UV light (1, UCRC); CA, Cottonwood Springs, 11/7/1950, ER Tinkham, red tag (1, USNM); CA, San Bernardino Co., Halloran Springs, 14 mi E of Baker, 4/15/1964, RL Langston (1, EMEC); CA, San Diego Co., San Diego, GR Crotch (1, ANSP); CA, Riverside Co., 4 mi NW of Desert Center, 6/20/1956, M Wasbauer (1, EMEC); CA, Providence Mts., 4/12/1934, ML Walton, Collection of ML Walton donated to LACM 1975 (1, LACM); CA, San Bernardino Co., Needles, 5/31/1968, JC Lambert, light trap (1, CSCA); CA, San Bernardino Co., Needles, 5/10/1983, D Pendleton (1, SDMC); CA, Mono Co., White Mts., Coldwater Canyon, 4/21-11/15/1983, D Giuliani, antifreeze pit trap (1, CSCA); CA, Kern Co., Iron Canyon E of Garlock, 4/1/1961, CA Toschi (1, EMEC). All paratypes labeled "Paratype Arenivaga delicata Hopkins 2012" [blue label with black border].

Etymology.

The name is an adjective in the nominative singular. This species is named delicata from Latin meaning delicate. Though not as short in total length as Arenivaga pumila or Arenivaga ricei it is one of the smallest and most delicate of the Arenivaga .

Distribution.

This species is distributed from Willow Spring, CA in the north and west to Blythe, CA in the south and east. See Fig. 41.

Diagnosis.

Arenivaga delicata is smaller than average for Arenivaga but may be confused with Arenivaga mortisvallisensis which has a sympatric distribution. Arenivaga delicata may be distinguished by the clamshell shape of the small central sclerite and the distinctive crossing band of teeth towards the anterior end. See Figs 40 and 109.

Description.

Male.Measurements. Holotype TL = 17.7 mm, GW = 8.0 mm, PW = 4.76 mm, PL = 3.23 mm, TL/GW = 2.21, PL/PW = 0.68. EW = 0.40 mm; OW = 0.30 mm. Among paratypes range of TL 14.7-17.7 mm; range of GW 6.9-8.4 mm; range of PW 4.28-4.76 mm; range of PL 3.07-3.42 mm.

Head. Two ocelli very large, ovoid and protruding (0.4 × 0.3 mm); vertex dark brown with small ridges in rays around upper apex of eyes and extending onto ocellar tubercles; interocellar space concave, smooth, medium brown; two round indentations medial to ocelli. Frons pale beige, concave; clypeus bulbous; pale beige anteclypeus. See Fig. 39d.

Pronotum. Pronotum translucent, waxy beige; dorsal surface of pronotum with short fine light orange-brown setae centrally and posteriorly grading to longer, thicker setae laterally and anteriorly; pronotal pattern orange-brown "panther face" with no discernible detail; orange-brown posterior aura. See Fig. 39c.

Body. Wing brace present. Two tarsal claws present. Legs and body light brown with darker brown maculations laterally on each sternite; subgenital plate light brown; asymmetrical with rounded apices. See Fig. 39b.

Forewings. Wings extended well beyond abdominal apex (~45% of wing length); color golden with light to medium brown splotches depending on specimen; surface translucent and lustrous. See Fig. 39a.

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 short, shagreened with toothed margin. Small central sclerite shaped like clamshell, finely punctate with crossing band of teeth one third of distance from anterior end; right ventral phallomere extends from articulation to form rounded punctate structure; attached anteriorly is mildly dorsally projecting flanged arm, shagreened with roughly toothed edge. Folded anterior portion of left phallomere setose, otherwise unmodified. Genital hook with short extension to pointed rounded head and short hook; arm smoothly curving. See Fig. 40.

Habitat and natural history.

All life history elements remain unobserved.