Ensiferella kanmiyai Nartshuk

Liu, Xiaoyan & Yang, Ding, 2012, Species of the genus Ensiferella Andersson from China, with a key to world species (Diptera, Chloropidae), Zootaxa 3207, pp. 54-62 : 59-60

Ensiferella kanmiyai Nartshuk

(Figs. 12–18)

Ensiferella kanmiyai Nartshuk, 1993: 104 . Type locality: Vietnam: Thanh Hoa.

Diagnosis. Ocellar triangle black, large and broad with pointed anterior apex and a medial groove. Antenna yellow except postpedicel black at dorsodistal portion. Legs black except trochanters; distal portion of femora; entire tibiae and tarsi yellow; fore tarsomeres 4–5 and apical portion of mid and hind tarsi brown. Tergites 1–3 with a large triangular yellow spot. Postgonite distinctly incurved apically and bearing minute serrulation on apical margin.

Figures 12–15. Ensiferella kanmiyai Nartshuk , male. 12. epandrium, ventral view; 13. epandrium, lateral view; 14. hypandrium and phallic complex, ventral view; 15. hypandrium and phallic complex, lateral view. Scale bar = 0.1 mm.

Description. Male. Body length 2.0– 2.6 mm, wing length 1.7–1.9 mm.

Head brown without microtomentum, about 0.8 times as long as high, wider than thorax; face somewhat concave in lateral view, bright brown except two sides of facial carina yellow; frons brown, about as long as wide, projecting only slightly in front of eye, almost entirely occupied by broad ocellar triangle; gena brown except lower margin black, linear with few brown setulae; vibrissal angle obtuse; parafacial unconspicuous; clypeus light black. Ocellar triangle very large and broad, black, shiny, reaching to anterior margin of frons with pointed apex, and with a medial groove; ocellar tubercle black. Occiput brown. Cephalic setae and setulae black; if, orb short hair-like; oc, pvt hair-like, oc, pvt procurved and divergent; vte developed, recurved; vti weak, procurved, 0.5 times as long as vte. Antenna yellow with thick grayish microtomentum; pedicel short; postpedicel kidney-shaped, black at dorsodistal portion, 0.38 times as long as wide; arista brown except basal 2 segments and basal portion of 3rd segment blackish brown. Proboscis yellow with yellowish setulae; palpus black with black setulae.

Scutum almost as long as wide, brown in ground color with 3 broad black longitudinal stripes, medial stripe extending to posterior 3/5 of scutum, covered with gray microtomentum but polished on stripes and postpronotum. Postpronotum brown with a small black spot. Thoracic pleuron shiny, brown except for anteroventral portion of anepisternum and anepimeron; ventral 2/3 of katepisternum; anteroventral portion of katepimeron black. Postnotum black. Scutellum brown, short, rounded, about 0.6 times as long as wide; ap sc distinctly shorter than scutellum. Setae and setulae on thorax black. npl 1+2, a npl and posterior p npl hair-like, anterior p npl developed; p pa hair-like, a pa strong, longer than p pa; 1 hair-like dc, as long as a pa. Legs black except for trochanters; distal portion of femora; entire tibiae and tarsi yellow; fore tarsomeres 4–5 and apical portion of mid and hind tarsi brown. Setulae on legs brown, but setulae on tibiae yellow. Tibial organ absent. Wing hyaline, about 3.0 times as long as wide; veins brown. Relative lengths of 2nd: 3rd: 4th costal sections = 14: 13: 5; discal cell narrow and long; r-m at basal 0.45 of discal cell. Halter brown.

Abdomen shiny, yellowish brown except for tergite 1 yellow, tergites 1–3 with a large triangular yellow spot; venter yellow. Setulae on abdomen brown.

Male genitalia (Figs. 12–15): Epandrium short tubular, weakly sclerotized, brown with long brown setulae, with 2 band-like sclerites along posterodorsal notch. Surstylus spoon-shaped, basally broad, round with spinous processes, distally narrowed, attached to epandrium anteroventrally, with short setulae. Cercus large, nearly square with 5 pairs of setulae. Gonites arranged in a row; postgonite distinctly incurved apically, bearing minute serrulation on apical margin with some sensory setulae, basally narrowed; pregonite as long as postgonite, basally broad and flat, distally pointed; basiphallus cylindrical; distiphallus long, cylindrical, extended beyond lower margin of hypandrium; phallapodeme long, extended near base of basiphallus, with basal stalk broad in lateral view. Hypandrium narrowed.

Female similar to male. Body length 2.3–2.9mm, wing length 1.6–1.9 mm.

Female genitalia (Figs. 16–18): Tergite 9 subtriangular, distinctly wider than long, with 3 long setae; sternite 9 long and apically round with long stout setae at apical portion. Cercus short and stout with some long setae.

Figures 16–18. Ensiferella kanmiyai Nartshuk , female. 16. abdominal terminalia, dorsal view; 17. abdominal terminalia, lateral view; 18. abdominal terminalia, ventral view. Scale bar = 0.1mm.

Material examined. CHINA: Yunnan: 1 3, Shangjiang, 19. VII. 2006, Kuiyan Zhang. Hainan: 1 ♀, Wuzhishan, 17. V. 2007, Junhua Zhang; 1 3, 1 ♀, Baisha, 8. X. 2007, Ding Yang; 1 3, Baisha, 18. X. 2007, Ding Yang; 1 3, Baisha, 19. X. 2007, Ding Yang; 1 ♀, Wuzhishan, 28. X. 2007, Ding Yang. Fujian: 1 ♀, Nanping, 19. VII. 2009, Xiaoyan Liu. All specimens were stored in 75% ethanol.

Distribution. China (Yunnan, Hainan, Fujian); Vietnam (Thanh Hoa, Zyalay-Kontum).

Remarks. The type specimen of E. kanmiyai agrees very well with material from China except that in the latter scutum brown with 3 broad black longitudinal stripes, but this is not considered to be of taxonomic importance, since no differences were found in the male genitalia.