Ommatius corolla, Zhang & Zhang & Yang, 2014

Zhang, Li-Li, Zhang, Kui-Yan & Yang, Ding, 2014, Three new species of the genus Ommatius Wiedemann from Hainan, China (Diptera: Asilidae), Zoological Systematics 39 (4), pp. 561-569 : 562-565

3.1 Ommatius corolla sp. nov. ( Figs 1–6 , 19 )

Diagnosis. The new species is somewhat similar to O. ramakrishnai in the epandrium elongated apically, but may be separated by the femora are not wholly black. In O. ramakrishnai , the femora are wholly black (Joseph & Parui, 1999). O. corolla sp. nov. is also diagnosed by: postocular bristles black; antennal scape and pedicel black, postpedicel brownish yellow; fore coxa yellow, mid and hind coxae black; fore femur yellow, brown dorsally; mid femur yellow, brown dorsally and apically, hind femur black except less than basal 1/3 yellow.

Description. Male. Body length 7 mm, wing length 6 mm.

Head. Face narrow, black, pale gray tomentose, with 4 long black bristles on upper 2/3 and pale bristles and hairs on lower 1/3; mystax with pale, dense bristles; frons black, pale gray tomentose, with several short black hairs laterally; occiput black, pale tomentose, with pale hairs longer on lower ventral area; postocular bristles black. Antennal scape and pedicel black, bearing black bristles; postpedicel brownish yellow, slightly shorter than combined length of scape and pedicel. Proboscis black, with pale hairs basally and apically; palpus blackish brown, with black hairs and bristles.

Thorax. Black with pale white tomentum. Pronotum pale haired. Hairs on proepisternum and upper anepisternum longer. Antepronotum pale haired, with 2 pale bristles. Mesonotum black, with short, black hairs anteriorly and laterally; 2 dc, 2 npl, 1 spa and 1 pal, all black. Scutellum black, with 6 pale hairs dorsally and 2 strong black marginal bristles. Anepimeral bristle pale; 3 black and 8 pale katatergal bristles; 3 pale metapleural bristles. Wing hyaline, tinged brownish; crossvein r-m just beyond middle of discal cell. Anal cell closed with short stalk. Halter yellow.

Legs. Fore coxa yellow, mid and hind coxae black. Fore coxa with pale hairs and bristles anteriorly, mid coxa with pale hairs and bristles apically, hind coxa with 1 pale bristle at middle and pale hairs apically. Fore femur yellow, brown dorsally, with pale ventral hairs longer than greatest vertical height of femur; mid femur yellow, brown dorsally and apically, with 1 thin black bristle at basal 1/4 anteriorly, 2 thin black bristles at apical 1/3 anteriorly, 1 black strong bristle at middle anteriorly, one row of long and pale ventral hairs (longer than greatest vertical height of femur); hind femur black, nearly basal 1/3 yellow, with 5 long pale ventral bristles longer than greatest vertical height of femur, and one row

© Zoological Systematics, 39(4): 561–569 of pale av (shorter than greatest vertical height of femur). Fore and mid tibiae yellow, apex brown; hind tibia yellow, apical half brown. Fore tibia posteriorly with 2 long pale bristles; mid tibia with 2 ad, 4 v, 2 pv (all the 8 bristles black) and 5 pd (1 black, 4 pale); hind tibia with 2 ad (1 black, 1 pale), 2 pd and 1 v, black. Apex of basal tarsomere and apical 4 tarsomeres of fore and mid tarsi black, hind tarsus wholly black, hairs, bristles, and claws black.

© Zoological Systematics, 39(4): 561–569

© Zoological Systematics, 39(4): 561–569

Abdomen. Blackish brown, posterior and lateral margin of segments 2–5 pale, with pale and black hairs and bristles. Pale hairs and bristles on tergite 1 laterally longer. Male genitalia ( Figs 1–6 ). Epandrium narrow, long, slightly angular apically; hypandrium triangular, about as long as gonocoxite; apex of gonocoxite acute in lateral view. Distiphallus erect, sigmoid, arising from base of a wide, corolliform aedeagal sheath.

Female. Unknown.

Type material. Holotype male, Hainan, Jianfengling , 4–7 June 2007, Jie Zeng.

Etymology. The name refers to the corolliform shape of the apex of the aedeagal sheath.

Distribution. China (Hainan).

Figures

Figs 1–6. Ommatius corolla sp. nov., male genitalia. 1–2. Epandrium and cercus, dorsal and lateral views. 3–4. Hypandrium and gonocoxites, ventral and lateral views. 5–6. Aedeagus, lateral and dorsal views. Scale bars=0.1 mm.

Figs 19–21. Ommatius spp., holotype. 19. O. corolla sp. nov. 20. O. huoae sp. nov. 21. O. jianfenglingensis sp. nov.