Dicraeus malaisei Nartshuk, 2000, 1325

Liu, Xiaoyan, Yang, Ding & Nartshuk, Emilia P., 2019, New species and records of Dicraeus Loew, 1873 from China (Diptera: Chloropidae), Zootaxa 4554 (2), pp. 351-370 : 361-362

Dicraeus malaisei Nartshuk, 2000

Figs 7 , 33 , 39

Dicraeus malaisei Nartshuk, 2000: 1325 . Type locality: Burma.

Description. Head brown ( Fig. 7 ), 0.8 times as long as high in profile; frons brown with distal 1/4 yellow, as long as wide; gena yellow, broad, 0.8 times as wide as first flagellomere. Ocellar triangle smooth, shiny, distal 1/4 yellow, reaching anterior margin of frons, with pointed apex. Antenna yellow except for dorsal 1/2 of first flagellomere brown; first flagellomere 0.9 times as long as wide; arista blackish brown with short brown pubescence. Proboscis yellow and palpus yellowish brown. Scutum black, 1.1 times as long as wide. Thoracic pleuron shiny brown with a longitudinal yellow stripe running from posterior angle of postpronotal lobe to wing base; ventral 1/2 of katepisternum black. Scutellum brown, 0.5 times as long as wide. Legs yellow except for fore tarsomeres 2–5, mid and hind tarsomeres 4–5 yellowish brown. Wing hyaline, 2.7 times as long as wide; veins brown. Relative lengths of 2nd: 3rd: 4th costal sections = 8: 2: 1. Halter pale yellow. Abdomen brown except for tergite 1 and distal portions of tergites 2–5 yellow. Male genitalia ( Figs. 33 , 39 ): Epandrium brown, height 1.5 times width in profile; cercus small; surstylus 2 times as long as epandrium, nearly parallel, recurved at middle in profile, with some short setulae on distal portion.

Female. External characteristics similar to male.

Specimens examined. 2 ♂♂, CHINA, Yunnan, Menglun, No. 55, 24. IV. 2007, Wenliang Li Leg. ( CAU) (photo and abdomen dissected). All specimens were stored in 75% ethanol .

Distribution. China (Yunnan); Burma.

Remarks. The new species is somewhat similar to D. nartshukae Kanmiya, 1971 , but can be separated from the latter by the propleuron black, and surstylus 2 times as long as epandrium, nearly parallel, recurved at middle in lateral view. In D. nartshukae , the propleuron is yellowish; and the surstylus is distinctly shorter than epandrium in lateral view ( Nartshuk 2000).

Figures

FIGURES 6–11. Dicraeus species, habitus. 6 D. fuscipennis Kanmiya; 7 D. malaise Nartshuk; 8 D. nartshukae Kanmiya; 9 D. orientalis Becker; 10 D. Phyllostachyus Kanmiya; 11 D. rossicus Stackelberg. Scale bar = 1 mm.

FIGURES 32–37. Dicraeus species, male. epandrium, posterior view. 32 D. fuscipennis Kanmiya; 33 D. malaise Nartshuk; 34 D. nartshukae Kanmiya; 35 D. orientalis Becker; 36 D. phyllostachyus Kanmiya; 37 D. rossicus Stackelberg. Scale bar = 0.1 mm.

FIGURES 38–43. Dicraeus species, male. epandrium, lateral view. 38 D. fuscipennis Kanmiya; 39 D. malaise Nartshuk; 40 D. nartshukae Kanmiya; 41 D. orientalis Becker; 42 D. phyllostachyus Kanmiya; 43 D. rossicus Stackelberg. Scale bar = 0.1 mm.