Homoneura cangshanensis, Li & Yang, 2013

Li, Wenliang & Yang, Ding, 2013, Four new species of Homoneura s. str. from Yunnan, China (Diptera, Lauxaniidae), Revue suisse de Zoologie 120 (4), pp. 549-561 : 550-551

Homoneura cangshanensis new spec. Figs 1-10

MATERIAL: Holotype ♁ ( CAU), CHINA, Yunnan Province: Dali, Cangshan, Wuweisi (25°43'N, 100°07'E, 2200 m), 30. VII. 2006, Kuiyan Zhang. – Paratypes: CHINA, Yunnan Province: 1 ♀ ( CAU), data same as holotype. – 1 ♀ ( MNHG), Dali, Cangshan, Wuweisi (25°43'N, 100°07'E, 2200 m), 1. VIII. 2006, Kuiyan Zhang .

ETYMOLOGY: The new species is named after the type locality Cangshan.

DIAGNOSIS: Antennal arista long plumose, with longest hairs as long as height of 1st flagellomere. Wing with 5 brown spots, separately on r-m, dm-cu, and preapices of R 2+3, R 4+5, M 1, preapcial spot of M 1 obscure. Abdominal tergites 2-5 somewhat irregular brownish yellow at anterior margin; protandrium incompletely circular; surstylus claviform, curved backward and acuate apically; aedeagus with pair of dorsal sclerites incurved and convergent apically.

DESCRIPTION

Male: Body length 4.1 mm, wing length 4.7 mm. Female: Body length 4.8- 4.9 mm, wing length 5.1-5.2 mm.

Head (Fig. 3) yellow. Frons slightly wider than long and parallel-sided; ocellar triangle brown; oc strong, about as long as anterior or, anterior or shorter than posterior or. Gena about 1/6 height of eye. Antenna yellow, 1st flagellomere brownish, 1.3 times longer than high; arista long plumose, blackish brown except brown basally, with longest hairs as long as height of 1st flagellomere. Proboscis yellowish brown, with yellowish and blackish hairs; palpus pale yellow with blackish hairs.

Thorax (Fig. 4) yellow with grayish white pruinescence. Mesoscutum with 0+3 dc, anterior dc clearly behind transverse scutal suture, acr in 6 somewhat irregular rows. prsc somewhat shorter than 1st post-sutural dc. Legs pale yellow. Fore femur with 4 strong pv and 5 pd, ctenidium with 11-12 short bristles; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 4 a and 1 apv; mid tibia with 1 strong preapical ad and 3 strong apv. Hind femur with 1 preapical ad; hind tibia with 1 weak preapical ad and 1 short apv. Wing (Fig. 2) slightly yellow, with 5 brown spots, separately on r-m, dm-cu, and preapices of R 2+3, R 4+5, M 1, preapcial spot of M 1 obscure; subcostal cell hyaline; costa with 2nd (between R 1 and R 2+3), 3rd (between R 2+3 and R 4+5) and 4th (between R 4+5 and M 1) sections in proportion of 2.5: 0.8: 0.5; r-m beyond middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1.5: 1.0; ultimate section of CuA 1 about 1/7 of penultimate. Halter pale yellow.

Abdomen (Fig. 5) yellow; tergites 2-5 somewhat irregular brownish yellow at anterior margin. Male genitalia (Figs. 6-10): protandrium incompletely circular; epandrium nearly trapezoid in lateral view; surstylus claviform, curved backward and acuate apically; hypandrial apodeme long and parallel; gonopod columniform, about as long as aedeagus; aedeagus without apical incision, but with pair of dorsal sclerites incurved and convergent apically; aedeagal apodeme as long as aedeagus.

DISTRIBUTION: China (Yunnan).

REMARKS: The new species resembles H. longinotata Shi & Yang from China (Hainan) in the following characters: ocellar triangle brown; oc about as long as anterior or; arista long plumose, with longest hairs as long as height of 1st flagello-

FIGS 1-5

Homoneura cangshanensis sp. n. Male. (1) Body, lateral view. (2) Wing. (3) Head, dorsal view. (4) Mesoscutum, dorsal view. Female. (5) Abdomen, dorsal view.

mere; wing with similar pattern; abdomen without dark spots; surstylus claviform, curved backward and acuate apically. But it can be separated from the latter by the following features: frons without dark bands; 1st flagellomere brownish; protandrium incompletely circular; aedeagus without apical incision; aedeagal apodeme as long as aedeagus. In H. longinotata, the frons has 2 brownish bands; the 1st flagellomere is black at apical 1/3; the protandrium is a complete circle; the apical incision of the aedeagus is deep; the aedeagal apodeme is shorter than aedeagus ( Shi & Yang 2009).