Trypetisoma (Trypaneoides) jinpingensis, Li & Qi & Yang, 2019

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 : 43-45

Trypetisoma (Trypaneoides) jinpingensis sp. nov. ( Figs. 21–30 ) Diagnosis. Face with 1 V-shape median brown spot. Antenna yellow. Mesonotum with a pair of narrow brown median bands. Male genitalia: syntergosternite with 1 black long ventral process at ventral apex, broad and sclero- tization strongly. Description. MALE. Body length 2.2–2.3 mm, wing length 2.6–2.7 mm. FEMALE. Body length 2.5–2.8 mm, wing length 2.4–2.6 mm.

Head ( Fig. 21 ) pale yellow. Face brownish yellow, with 1 brown V-shaped median spot and with 1 brown median spot on ventral margin; parafacial with 1 elliptic brown spot on inner margin. Frons brownish yellow except anterior margin yellow, with grayish white pruinescence, wider than long, trapeziform, with anterior margin narrower than the posterior, with a pair narrow brown median bands, extending to ocellar triangle; ocellar triangle blackish gray, oc developed, longer than anterior or; anterior or about half length of posterior or; or each with 1 blackish brown basal spot. Gena about 1/5 eye height. Occiput with gray pruinescence. Antenna yellow; 1 st flagellomere nearly 1.3 times longer than high; arista brown except yellow basally, pubescent. 1 brown triangular spot present between antenna and eye. Proboscis with yellow and black hairs; palpus yellow except pale brown at apex, with black hairs.

Thorax ( Fig. 24 ) brown, with grayish yellow pruinescence. Mesonotum with a pair of narrow brown median bands extending from anterior margin to presutural dc; postpronotum with posterior margin surrounded by 1 thin brown band, 3–4 brown spots present 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, 1st post-sutural acr on transverse scutal suture, prescutellar acr absent; dc, acr and prescutellar acr each with 1 brown basal spot. Anepisternum and katepisternum with 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 to brown except yellow at apex; apical tarsi brown. Fore femur with 5 pd, 3 pv; fore tibia with 1 long dp, 2 short apv. Mid femur with 8 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. 22 ) anterior margin brown, with circular or irregular brown spots; 1 wide brown band along dm-cu extending from anterior margin to the posterior and with hyaline spots; subcostal cell brown; costa with 2nd, 3rd and 4th sections in proportion of 7.7: 2.6: 1.8; r-m beind middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 5.1: 2.2; ultimate section of CuA 1 about 1/7 of penultimate section. Halter pale yellow except knob brown.

Abdomen ( Fig. 25 ) blackish brown, with grayish white pruinescence; syntergosternite and epandrium brownish yellow; tergites 2–6 each with posterior margin setae in 1 row, 1 irregular polyline transverse band, tergite 2 with a pair of irregular blackish brown lateral spots, tergites 3–6 with a pair of irregular blackish brown median spots. Male genitalia ( Figs. 26–30 ): syntergosternite with 1 black long ventral process at ventral apex, broad and sclerotization strongly. Epandrium with setae on brown spots. Surstylus broad with seta, and 2/3 width of epandrium. Hypandrium V-shaped and acute at apex. Gonopod tubiform and tapering apically, curved in lateral view, with 3 long hairs near base. Aedeagus with 1 long ventral process basally, 1 curved apical process at middle of apex, beyond 90° angle between apical process and aedeagus. Aedeagus without apical concave. Aedeagal apodeme tubiform, long and strong, nearly as long as aedeagus.

Type material. Holotype ( HAUST): 1 ♂, CHINA, Yunnan: Jinping, Yakoufenshuiling Belay Station, 2006. V. 18, Junhua Zhang . Paratypes ( HAUST): 1 ♂, 2 ♀♀, data same as holotype

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Distribution. China (Yunnan).

Remarks. The new species wing with 1 wide brown band, extending from anterior margin to posterior margin along dm-cu; tergites 2–6 each with 1 irregular polyline transverse band, and tergite 2 with a pair of irregular blackish brown lateral spots, tergites 3–6 with a pair of irregular blackish brown median spots. These features are different from other species of Trypaneoides .

Etymology. Latin, jinpingensis , referring to the type locality Yunnan, Jinping.

Figures

FIGURES 21–25. Trypetisoma (Trypaneoides) jinpingensis sp. nov. Male. 21. head, anterior view; 22. wing; 23. habitus, lat- eral view; 24. thorax, dorsal view; 25. abdomen, dorsal view.

FIGURES 26–30. Trypetisoma (Trypaneoides) jinpingensis sp. nov. Male. 26. syntergosternite and epandrium, lateral view; 27. epandrial complex, posterior view; 28. syntergosternite, anterior view; 29. aedeagal complex, ventral view; 30. aedeagal complex, lateral view.