Horaia calla, Kang & Yang, 2015

Kang, Zehui & Yang, Ding, 2015, New record of Horaia (Diptera: Blephariceridae) in China with descriptions of two new species, Florida Entomologist 98 (1), pp. 118-118 : 118-

Horaia calla sp. nov. ( Figs. 6–10 )

Diagnosis

Antenna with 10 segments. Epandrium irregularly trapezoidal, posterior margin slightly concaved medially. Cercus U-shaped. Inner gonostylus slender and straight, slightly enlarged medially.

Male

Body length 8.5 mm, wing length 7.5 mm. Head ( Fig. 7 ) brown. Compound eyes large, almost covering all the head; upper parts holoptic, large and flat, brick-red; lower parts black. Ocelli light, prominent. Antenna with 10 segments, uniformly brown; scape short, with several brown short hairs; pedicel short, swollen, with several short hairs; first flagellomere, slender, about 4 times longer than wide; with several short hairs; 2nd flagellomere about 3 times longer than wide; 3-8 flagellomeres short, with short brown hairs. Clypeus round, bulbous; proboscis long, free portion twice height of head; labrum elongate, about half length of proboscis; palpus small, one segment, dark brown.

Thoracic dorsum mostly brown except middle part of mesoscutum yellow posteriorly; scutellum with a transverse black stripe posteriorly; pleuron mostly brown, except an epimeron yellow; thorax without hairs. All coxae and trochanters bicolored, yellow at basal 1/2, dark brown at apical 1/2; all femora uniformly yellow brown, with short brown hairs; tibiae mostly yellow brown, with dark brown spot apically; tarsomeres dark brown, with short black hairs. Wing ( Fig. 8 ) board, subhyaline; veins brown; R 4+5 slightly waved from middle part apically; A 1 not reaching wing margin. Haltere brown.

Abdominal tergites mostly yellow, posterior margins of 4th to 7th segments with black margin; male genitalia dark brown; sternites brown.

Male genitalia ( Figs. 9–10 ): Asymmetric. Epandrium irregularly trapezoidal, posterior margin slightly concaved medially, with short black hairs apically. Cercus U-shaped, with uniformly short hairs. Hypandrium fused with gonocoxite, irregularly quadrilateral, slightly concaved at distal margin. Outer gonostylus board, round apically, with short dense hairs apically, medial part with dense long hairs. Inner gonostylus slender and straight, slightly enlarged medially.

Female

Unknown.

Type Material

HOLOTYPE Ƌ, CHINA: Yunnan, Gongshan, Dulongjiang , 2013.VII.1, W. ZHANG ( CAU).

Distribution

China (Yunnan).

Remarks

The adults are similar to those of H. montana Tonnoir , but can be separated from the latter by the antenna with 10 segments, the irregularly trapezoidal epandrium with the posterior margin slightly concaved medially, and the U-shaped cercus. In H. montana , the antenna has 9 segments, the epandrium is simple, and the cercus is well developed, large and parallel ( Gibson & Courtney 2007).

Etymology

The specific name refers to its bright color.

Figures

Figs. 6–10. Horaia calla sp. nov. (male). 6. Habitus of male, lateral view; 7. Head; 8. Wing; 9. Male Genitalia, dorsal view; 10. Male Genitalia, ventral view. Scale bar: 6, 8 = 1 mm; 7, 9–10 = 0.25 mm.