Homoneura (Euhomoneura) yanqingensis, Shi, Li, Gao, Xuefeng & Li, Wenliang, 2017

Shi, Li, Gao, Xuefeng & Li, Wenliang, 2017, A new species of Homoneura (Euhomoneura) from northern China (Diptera, Lauxaniidae), ZooKeys 725, pp. 71-78 : 71-73

Homoneura (Euhomoneura) yanqingensis sp. n. Figures 13-19, 20-24

Type material.

Holotype ♂, CHINA: Beijing (CAUC): Yanqing County, Songshan, 8.ix.2009, Xiaoyan Liu. Paratypes: CHINA: Beijing (CAUC): 7♂♂, 8♀♀, data same as holotype. CHINA: Shaanxi Province (IMAU): 1♂, Baoji City, Feng County, Huangniupu, 1501 m, 21.viii.2013, Yuqiang Xi; 1♂, 1♀, Zhouzhi, Houzhenzi, 1235 m, 11.viii.2013, Wencheng Chang; 1♀, Zhouzhi, Laoxiancheng, 1916 m, 19.viii.2014, Xiumei Lu.

Diagnosis.

Body yellow. Arista pubescent. Palpus with brown apex. Mesonotum with four strong and long acrostichal setae (two before suture, two after suture). All femora each with a brown irregular apicoventral spot and all tasomeres 3-5 brown. Wing hyaline, with five brown isolated spots.

Description.

Male. Body length 3.8-4.2 mm. Wing length 3.7-4.3 mm. Female. Body length 3.8-4.2 mm.Wing length 3.7-4.3 mm.

Head pale yellow. Frons with sparse grayish white pruinosity, longer than wide and parallel-sided; ocellar triangle brown, ocellar setae well developed, longer than anterior fronto-orbital setae, anterior fronto-orbital setae shorter than length of posterior one; gena about 1/6 height of eye; antenna yellow; 1st flagellomere yellowish brown, 1.5 times longer than high; arista dark brown except for pale brownish base, ray pubescent, with longest ray as long as 1/3 height of 1st flagellomere. Proboscis yellow, palpus yellow except for brown apex.

Thorax yellow. Mesonotum with 1+2 dorsocentral setae; acrostichal setae in irregular six rows, with four strong and long acrostichal setae (two before suture, two after suture); a pair of prescutellar setae shorter than 1st post-sutural dorsocentral setae. Leg mostly yellow, all femora each with a brown irregular apicoventral spot and all tasomeres 3-5 brown. Fore femur with 6-7 posterodorsal setae, 4-5 posterovental seate, and ctenidium with 11-12 short setae; fore tibia with one strong preapical anterodorsal seta and one short apicoventral seta. Mid femur with five anterior setae and one short apical posterior seta; mid tibia with one strong preapical anterodorsal seta and one short apicoventral seta. Hind femur with one preapical anterodorsal seta and three anteroventral setae; hind tibia with one preapical anterodorsal seta and one short apicoventral seta. Wing hyaline, with five brown isolated spots: preapical spot on R2+3, apical spot on R4+5, subapical spot on M1, a cloud on crossvein r-m, and a narrow stripe-like spot on crossvein dm-cu (anterior margin and posterior margin darker than central area); pale brown along the radial sector; subcostal cell pale brown; costa with 2nd, 3rd and 4th sections in proportion of 4.5:1.8:1; r-m beyond middle of discal cell; ultimate and penultimate sections of M1 in proportion of 1:1.6; ultimate section of CuA1 about 1/6 of penultimate. Halter yellow.

Abdomen pale yellow, tergites 2-5 (female 2-6) with narrow brown posterior margin, and tergite 3-5 (female 3-6) brownish median spot or absent. Male genitalia: syntergosternite circular with a pair of ventral processes; epandrium broad with dense apical setae, surstylus narrow but slightly broaden at apex; hypandrium slender U-shaped; postgonite long cylindrical; aedeagus broad at middle and bluntly rounded in lateral view, aedeagal apodeme shorter than length of aedeagus.

Etymology.

The new species is named after collection locality.

Distribution.

China (Beijing, Shaanxi).

Comments.

The new species is similar to Homoneura (Euhomoneura) balluca Sasakawa, 1992 from Malaysia. It can be separated from the latter by the mesonotum having brown stripes, the coxa and femora of legs being brown and the tibiae each having brown rings on both apex, and the abdominal tergite 6 having a pair of brown lateral spots.