Apolysis beijingensis (Yang et Yang) Yang et Yang, 2010

Yao, Gang, Yang, Ding, Evenhuis, Neal L. & Gharali, Babak, 2010, A new species of Apolysis Loew, 1860 from China (Diptera: Bombyliidae, Usiinae, Apolysini), Zootaxa 2441, pp. 20-26 : 21

Apolysis beijingensis (Yang et Yang) comb. nov.

( Figs. 1 –2; 8–11)

Parageron beijingensis Yang & Yang, 1994: 273 . Type Locality: China (Beijing) [H in CAU].

Diagnosis. Head with white pollen and hairs. Antenna brown, anterior half of thoracic scutum with white pollen, posterior half as well as postpronotal lobe with brown pollen; scutellum yellowish brown. Epandrium trapezoid, distinctly longer than high; epiphallus A-shaped, with a round tip in dorsal view.

Description. Male ( Fig. 1 ). Body length 2.5 mm, wing length 2.7 mm.

Head black with white pollen. Hairs on head mostly white; male eyes holoptic; frons subtriangular with white pollen; face with white pollen and with long white erect hairs; occiput with dense white hairs. Antenna brown; scape short, nearly as long as wide, with long sparse yellowish hairs; pedicel cylindrical, nearly as long as wide, with short sparse yellowish hairs; first flagellomere subquadrate, nearly three times longer than wide, with short yellowish hairs basally, slightly broadening from base to tip, first flagellomere concave at tip, with an articulated spine-like second flagellomere in addition to a stylus at middle of concavity. Proboscis brown, bare, nearly twice head length; palpus black, with short brown hairs.

Thorax (Fig. 2) black, anterior half with white pollen except postpronotal lobe with brown pollen and posterior half with brown pollen. Thorax with sparse yellowish hairs laterally; postpronotal lobe with sparse yellowish hairs, thorax almost bare on disc, anepisternum and katepisternum with white pollen, bare. Scutellum yellowish brown, with white pollen posteriorly, and with yellow hairs dorsally. Legs with femora black, tibiae and tarsi brown. Hairs on legs mostly yellowish, bristles lacking. Femora with long sparse yellowish hairs; tibiae with short dense bristlelike yellowish hairs; tarsi with short dense yellowish hairs. Wing mostly hyaline with metallic reflections. Crossvein r-m close to base of cell dm. Base of vein C with yellowish hairs. Halteres with stem brown, knobs milkwhite.

Abdomen black with brown pollen except posterior portion third of tergites yellow with pale pollen. Abdomen with sparse yellowish hairs. Sternites black with pale pollen, except posterior portion third of tergites yellow with pale pollen.

Male genitalia ( Figs. 8–11 ). Epandrium trapezoid, distinctly longer than high; cercus well exposed in lateral view; epandrium subtriangular in dorsal view; gonocoxite distinctly narrowing apically, completely fused ventrally; gonostylus subquadrate, bifid apically in ventral view; epiphallus V-shaped, with a round tip in dorsal view.

Female. Unknown.

Specimens examined. 1 male, CHINA: Beijing, Haidian, China Agriculture University (N 40° 01’ 26’’ E 116° 16’ 50’’), 4. V. 1955, Jikun Yang (Holotype).

Distribution. China (Beijing).

Remarks: Apolysis beijingensis is similar to A. glabrifrons Gharali & Evenhuis , but it can be separated from the latter by the following points: The 1st flagellomere is four times longer than wide; the knob of the haltere is milk-white; the epandrium is distinctly longer than high in the lateral view. In A. glabrifrons , the 1st flagellomere is twice longer than wide; the knob of the haltere is brown; the epandrium is as long as high in the lateral view (Gharali & Evenhuis, in press).

Figures

FIGURE 1. Male body of Apolysis beijingenesis Yang & Yang lateral view. FIGURE 2. Male thorax of Apolysis beijingenesis Yang & Yang dorsal view. FIGURE 3. Male body of Apolysis galba sp. nov. lateral view. FIGURE 4. Male thorax of Apolysis galba sp. nov. dorsal view. FIGURE 5. Female body of Apolysis galba sp. nov. lateral view. FIGURE 6. Female thorax of Apolysis galba sp. nov. dorsal view. FIGURE 7. Antenna of Apolysis galba sp. nov. lateral view.

FIGURES 8 – 11. Apolysis beijingensis Yang & Yang male genitalia. 8. epandrium and cercus, dorsal view; 9. epandrium and cercus, lateral view; 10. gonocoxite and gonostylus, ventral view; 11. gonocoxite, gonostylus, and phallus, dorsal view.