Minettia (Minettiella) tianmushanensis, Shi, Li & Yang, Ding, 2014

Shi, Li & Yang, Ding, 2014, Five new species of Minettia (Minettiella) (Diptera, Lauxaniidae) from China, ZooKeys 449, pp. 81-103 : 85-87

Taxon classification Animalia Diptera Lauxaniidae

Minettia (Minettiella) tianmushanensis sp. n. Figs 26- 30, 41- 43

Type materials.

Holotype ♂ (CAUC), CHINA, Zhejiang: Lin’an, Tianmushan National Natural Reserve, 19. vii. 2007, Yajun Zhu. Paratypes: 5♂♂, 3♀♀ (CAUC), Zhejiang: as holotype; 1♂, 1♀ (CAUC), CHINA, Zhejiang: Lin’an, Tianmushan National Natural Reserve, Dajinggu, 20. vii. 2007, Yajun Zhu.

Etymology.

The new species is named after the type locality Tianmushan National Nature Reserve, Zhejiang Province

Diagnosis.

Frons slightly upturned with yellow anterior margin and short brownish yellow median stripe. Antenna brown with 1st flagellomere yellow at base; arista pubescent, with longest rays about 1/3 height of 1st flagellomere. Mesonotum 0+2 dc, acr in irregular 4 rows. Mid tarsi dark yellow and basitarsus with 1 subbasal pv, and hind tarsi dark yellow.

Description.

MALE. Body length 3.4-3.7 mm, wing length 3.4-3.6 mm. FEMALE. Body length 3.2-3.5 mm, wing length 3.3-3.6 mm.

Head. Frons with yellow anterior margin, slightly upturned and short brownish yellow median stripe. Gena about 1/10 eye height. Antenna brown with 1st flagellomere yellow at base and 1st flagellomere nearly 1.8 times longer than high; arista pubescent, longest rays about 1/3 height of 1st flagellomere. Proboscis and palpus blackish brown.

Thorax with brownish gray pruinosity. Mesonotum with 0+2 dc, acr in irregular 4 rows, a pair of long acr in front of prsc, prsc longer than 1st postsutural dc. Legs: tibia black, fore tarsi black, mid and hind tarsi dark yellow. Fore femur with 4-5 pv and 8 pd, fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 3-4 a and 1 app; mid tibia with 1 strong preapical ad and 1 strong apv, mid basitarsus with 1 subbasal pv. Hind femur with 1 preapical ad, hind tibia with 1 weak preapical ad and 1 short apv. Wing with costa with 2nd (between R1 and R2+3), 3rd (between R2+3 and R4+5) and 4th (between R4+5 and M1) sections in proportion of 5:1:1; r-m beyond middle of discal cell; ultimate and penultimate sections of M1 in proportion of 1:1.1; ultimate section of CuA1 about 1/6 of penultimate section.

Abdomen with sparse brownish gray pruinosity. Male genitalia (Figs 26-30): syntergosternite circular; epandrium slender, nearly rhombic and narrow apically; surstylus separated from epandrium, contorted claviform in lateral view and subuliform in posterior view with two acute apical teeth; hypandrium nearly U-shaped in ventral view, hypandrial apodeme distinct; postgonite S-shaped with two apical setulae in lateral view; aedeagus subuliform, narrow apically with a small incision in ventral view and wide rectangular, slightly projecting subapically with a small acute apical process in lateral view; aedeagal apodeme long, as long as height of aedeagus. Female terminalia (Figs 41-43): ternite 7 concave in lateral view, tergite 8 constricted medially; sternite 9 semicircular, sternite 8 slender, sternite 7 concave apically with a pair of triangular apical processes, curved outward; spermathecae 2+1, elliptical.

Remarks.

The new species is very similar to Minettia (Minettiella) sasakawai from China (Hainan) and Vietnam in the following characteristics: mesonotum with 0+2 dc, acr in 4 rows, and a pair of long acr present in front of prsc; wing pale yellow at base, but it can be separated from the latter in the syntergosternite being circular, the surstylus being contorting and claviform in lateral view and subuliform in posterior view with two acute apical teeth, and the female abdominal tergite 6 having no long dorsal setae on the posterior margin. In Minettia (Minettiella) sasakawai , the syntergosternite is semicircular and narrow under the spiracle; the surstylus is slender, narrow apically with a falcate apical process in lateral view and the female abdominal tergite 6 has a pair of long dorsal setae on the posterior margin.

Distribution.

China (Zhejiang).