Trypetisoma (Trypaneoides) fenestrata (de Meijere, 1910)

Li, Wenliang, Qi, Ling & Yang, Ding, 2019, First record of the genus Trypetisoma Malloch, 1924 (Diptera, Lauxaniidae) for China with nine species, Zootaxa 4608 (1), pp. 35-64 : 40-41

Trypetisoma (Trypaneoides) fenestrata (de Meijere, 1910)

( Figs. 11–20 )

Diagnosis. Face with 1 V-shape median brown spot. Antenna brownish yellow to blackish brown, 1 st flagellomere yellow basally. Mesonotum with 2 narrow median brown band. Male genitalia ( Figs. 15–20 ): syntergosternite slen- der, incomplete circular in anterior view, breakage connected by membrane.

Description. MALE. Body length 2.1–2.4 mm, wing length 2.6–2.8 mm. FEMALE. Body length 2.2–2.3 mm, wing length 2.4–2.5 mm.

Head ( Fig. 11 ) pale yellow. Face brownish yellow with 1 V-shape median brown spot and with 1 brown spot on ventral margin; parafacial with 1 elliptic brown spot on apical margin. Frons brownish yellow except anterior margin yellow, with grayish white pruinescence, wider than long and anterior margin narrower than the posterior, trapeziform, with a pair of narrow brown median bands, extending to ocellar triangle; ocellar triangle blackish gray, oc developed, longer than anterior or; anterior or about half length of the posterior, and each with 1 blackish brown basal spot. Gena about 1/5 eye height. Occiput with gray pruinescence. Antenna brownish yellow to blackish brown, 1 st flagellomere yellow basally and nearly 1.4 times longer than high; arista blackish brown except yellow basally, pubescent. 1 brown triangular spot present between antenna and eye. Proboscis pale yellow, with yellow and black hairs; palpus yellow except pale brown at apex, with black hairs.

Thorax ( Fig. 14 ) brown, with grayish yellow pruinescence. Mesonotum with 2 narrow median brown band indistinctly, extending from anterior margin to anterior of scutellum, postpronotum with posterior margin surrounded by 1 thin brown band, 3–4 brown spots between dc and supra-alar seta; 1+3 dc, 1st post-sutural dc near transverse scutal suture, presutural dc closer to anterior margin than presutural acr; 1+3 acr, in 2 rows; prescutellar acr broken; dc, acr and prescutellar acr each with 1 brown basal spot. Anepisternum and katepisternum with gray pruinescence, anepisternum with 2 brown spots near dorsal margin, 1 brown spot near ventral margin, 2 anepst (the strongest one near posterior margin) and 3–4 short hairs; 2 kepst. Scutellum with grayish yellow pruinescence. Leg yellow, femora pale brown except pale yellow at apex, tibiae with 1 brown circle near base, apical tarsi brown. Fore femur with 5 pd, 3 pv; fore tibia with 1 long dp, 2 short apv. Mid femur with 5 a, 1 app; mid tibia with 1 strong dp, 1 apv. Hind femur with 2 apv on apical half, 1 preapical ad; hind tibia with 1 dp, 1 short apv. Wing ( Fig. 12 ) anterior margin brown, posterior margin gray gradually; r-m and apical R 2+3 each with 1 hyaline transverse band, extending from anterior margin to the posterior; r 1 and r 3 cell each with 3 hyaline spots; with 1 hyaline apical spot between R 4+5 and M 1+2; posterior margin with circular or irregular hyaline spots; subcostal cell brown; costa with 2nd, 3rd and 4th sections in proportion of 9.7: 3.5: 2.2; r-m beind middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 6.9: 3.6; ultimate section of CuA 1 about 1/6 of penultimate section. Halter pale yellow except knob brown.

Abdomen ( Fig. 15 ) blackish brown except syntergosternite and epandrium brown, with grayish white pruinescence; tergites 2–6 with 1 row setae on posterior margin. Male genitalia ( Figs. 16–20 ): syntergosternite slender, incomplete circular in anterior view, breakage connected by membrane. Epandrium slender. Surstylus broad with seta, tapering apically. Hypandrium H-shaped with a pair of distinct inner process. Gonopod tubiform, wider than aedeagus in lateral view, with 3 long hairs. Aedeagus slender basally, with a pair of dorsal sclerites, without apical concave. Aedeagal apodeme tubiform, shorter than 1/2 length of aedeagus.

Material examined. ( HAUST) 1 ♂, CHINA, Yunnan: Xishuangbanna, Mengla, Bubeng village, 2009. V. 9, Tingting Zhang. 1 ♂, CHINA, Yunnan: Xishuangbanna, Mengla, Bubeng village , 2009. V. 11, Tingting Zhang; 1 ♂, 1 ♀ , CHINA, Yunnan: Xishuangbanna, Shangyong, Longmen, Jinglong village , 2007. V. 1, Hui Dong; 1 ♂ , CHINA, Yunnan: Xishuangbanna, Shangyong, Longmen Reserve (900 m), 2007. V. 2, Hui Dong; 1 ♂ , CHINA, Yunnan: Xishuangbanna, Mengla , yaoqu village, 2007. IV. 26, Wenliang Li; 2 ♂♂ , CHINA, Yunnan: Xishuangbanna , Men- glun, No. 55 area (920 m), 2007. IV. 21, Hui Dong; 1 ♂ , CHINA, Yunnan: Menglun, Lushilin (600 m), 2007. IV. 21, Hui Dong; 1 ♂ , CHINA, Yunnan: Menglun, Botanical garden, Tropical Rainforest, 2007. IV. 22, Hui Dong; 2 ♂♂, 1 ♀ , CHINA, Tibet: Linzhi, Motuo (1100 m), 2012. VII. 28, Xuankun Li; 4 ♂♂, 2 ♀♀ , CHINA, Tibet: Linzhi, Motuo (1100 m), 2012. VII. 28, Wenliang Li; 1 ♂ , CHINA, Tibet: Linzhi, Motuo, Beibeng village (700 m), 2012. VII. 30, Xuankun Li; 1 ♂, 1 ♀ , CHINA, Tibet: Linzhi, Motuo, Beibeng village (700 m), 2012. VII. 30, Wenliang Li; 1 ♀ , CHINA, Yunnan: Gongshan, Xianjiudang (1679 m), 2013. VII. 3, Xuankun Li; 1 ♂ , CHINA, Yunnan: Xi- shuangbanna, Menghai, Mangao Reserve , 2011. VII. 30, Tao Li; 1 ♂ , CHINA, Yunnan: Xishuangbanna , Menglun, No. 55 area (920 m), 2009. V. 6, Xiushuai Yang .

Distribution. China (Yunnan, Tibet), Indonesia, Japan, Malaysia. Remarks. The new species is very similar to Trypetisoma (Trypaneoides) semicircularis sp. nov. from the Oriental region, but the latter wing r 3 cell with 4 hyaline spots, 2m 2 cell with more than 10 hyaline spots, tergites with bands; this species wing r 3 cell with 3 hyaline spots, 2m 2 cell with less than 10 hyaline spots, tergites without band.

Figures

FIGURES 11–15. Trypetisoma (Trypaneoides) fenestrata (de Meijere, 1910). Male. 11. head, anterior view; 12. wing; 13. habitus, lateral view; 14. thorax, dorsal view; 15. abdomen, dorsal view.

FIGURES 16–20. Trypetisoma (Trypaneoides) fenestrata (de Meijere, 1910). Male. 16. syntergosternite and epandrium, lateral view; 17. epandrial complex, posterior view; 18. syntergosternite, anterior view; 19. aedeagal complex, ventral view; 20. aedeagal complex, lateral view. Scale 0.1 mm.