Species of the genus Ensiferella Andersson from China, with a key to world species (Diptera, Chloropidae) Author Liu, Xiaoyan Author Yang, Ding text Zootaxa 2012 3207 54 62 journal article 45349 10.5281/zenodo.280197 47f66fd8-4d1f-4132-a7f5-76f29871a917 1175-5326 280197 Ensiferella elongata sp. nov. (Figs. 1–7) Diagnosis . Antenna black except scape yellow. Ventral 2/3 of katepisternum black, dorsal 1/3 yellow. Scutellum brown except middle 1/3 yellow. Legs yellow except fore tibiae and tarsi brown; mid and hind tarsomere 5 brown. Tergites 1–4 with a narrow triangular yellow spot. Hypandrium and phallic complex very long. Description . Body length 2.5 mm , wing length 1.8 mm . Head yellow without microtomentum, about 0.75 times as long as high, wider than thorax; face somewhat concave in lateral view, bright brown except middle 1/2 yellow; frons yellowish brown with posterior corner yellow, about as long as wide, projecting only slightly in front of eye, almost entirely occupied by broad ocellar triangle; gena linear, yellow with few yellow setulae; vibrissal angle obtuse; parafacial unconspicuous; clypeus light black. Ocellar triangle very large and broad, black, smooth, shiny with blue-green metallic shimmer, reaching to anterior margin of frons with pointed anterior apex; ocellar tubercle black. Occiput black. Cephalic setae and setulae black; if , orb short hair-like; oc , pvt hair-like, oc procurved and divergent; pvt procurved; vte developed, recurved and outcurved; vti weak, procurved, 0.5 times as long as vte . Antenna black except scape yellow with thick grayish microtomentum; postpedicel 0.5 times as long as wide; arista brown, basal 2 segments and basal portion of 3rd segment blackish brown. Proboscis brownish yellow with yellowish setulae; palpus black with black setulae. Scutum almost as long as wide, yellow in ground color with 3 black longitudinal stripes, the medial stripe extending to posterior 7/10 of scutum, sparsely with gray microtomentum. Postpronotum yellow with a small brown spot. Thoracic pleuron shiny, yellow except paratergite brown; anteroventral portion of anepisternum with a black long spot, ventral 2/3 of katepisternum black, lower margin with some yellow setulae; ventral portion of katepimeron with a black spot; Postnotum black. Scutellum brown except middle 1/3 yellow, about 0.7 times as long as wide; ap sc short, 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; a pa strong, longer than p pa ; 1 dc also strong, as long as a pa . Legs yellow except fore tibiae and tarsi brown; mid and hind tarsomere 5 brown. Setulae on legs brown. Tibial organ absent. Wing hyaline, about 2.5 times as long as wide; veins brown. Relative lengths of 2nd: 3rd: 4th costal sections = 12: 11: 4; discal cell narrow and long; r-m at basal 0.36 of discal cell. Halter brown. Figures 1–4 . Ensiferella elongata sp. nov. , male. 1. epandrium, ventral view; 2. epandrium, lateral view; 3. hypandrium and phallic complex, ventral view; 4. hypandrium and phallic complex, lateral view. Abbreviations: basph – basiphallus; cer – cercus; distph – distiphallus; epd – epandrium; hyp – hypandrium; phap – phallapodeme; pog – postgonite; prg – pregonite; sur – surstylus. Scale bar = 0.1mm . Abdomen shiny, yellowish brown except for tergite 1 yellowish, tergites 1+2 with a small black lateral spot, distal margins of tergites 2–4 blackish brown, tergites 1–4 with a narrow triangular yellow spot and yellow lateral margin; venter yellow. Setulae on abdomen brown. Male genitalia (Figs.1–4): Epandrium short tubular, weakly sclerotized, with 2 band-like sclerites along posterodorsal notch. Surstylus basally broad, nearly triangular with an incurved apex, clothed with some small spinous processes, distally narrowed. Cercus semicircular with 6 pairs of setulae. Hypandrium and phallic complex very long, gonites arranged in a row; postgonite slightly incurved distally with blunt apex, with some sensory setulae, basally pointed; pregonite as long as postgonite, basally broad, distally narrowed; basiphallus narrow, cylindrical; distiphallus long, cylindrical, 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 2.1–2.6 mm , wing length 1.3–1.8 mm . Female genitalia (Figs. 5–7): Tergite 9 subtriangular, distinctly wider than long, with 2 long setae; sternite 9 long and apically round with long stout setae at apical portion. Cercus long and stout with some long setae. Type material. Holotype 3, CHINA : Yunnan : Mengla, 8. VIII. 2010 , Hui Yu; paratypes 2 ♀ ♀, same data as holotype ; 3 ♀ ♀, Mengla, 8. VIII. 2010 , Wenliang Li. Hainan : 1 3, Wuzhishan, 29. V. 2007 , Xingyue Liu. All type specimens were stored in 75% ethanol. Figures 5–7 . Ensiferella elongata sp. nov. , female. 5. abdominal terminalia, dorsal view; 6. abdominal terminalia, lateral view; 7. abdominal terminalia, ventral view. Abbreviations: cer – cercus; s9 – sternite 9; t9 – tergite 9. Scale bar = 0.1 mm . Distribution. China (Yunnan, Hainan). Remarks. The new species is somewhat similar to E. sabroskyi Narshuk , but it can be separated from the latter by the following features: antenna black except scape yellow; legs yellow except fore tibiae and tarsi brown; distal margins of tergites 2–4 blackish brown, tergites 1–4 with a narrow triangular yellow spot. In E. sabroskyi , the antenna is yellowish brown except the basodorsal portion of the pedicel dark brown and the postpedicel yellow with the black dorsodistal portion; the legs are yellow except the fore tarsomeres 4–5 brown; the tergites 1+2 have a large semicircular yellow spot ( Nartshuk 1993 ). Etymology. The specific name is from the Latin elongata (“long”), refers to long hypandrium and phallic complex of the new species.