Homoneura (Homoneura) sauteri, Malloch, 1927

Shen, Rongrong, Shi, Li, Li, Wenliang & Wang, Junchao, 2018, A new species of subgenus Homoneura from Northern China, with information of 12 species newly recorded (Diptera: Lauxaniidae: Homoneura), Zootaxa 4418 (6), pp. 501-525 : 512

Key to separate 7 species in the Homoneura (Homoneura) sauteri group

[Modified from Shi and Yang 2014]

1. Wing only with brown spots on dm-cu .....................................................................2

- Wing with brown spots on r-m and dm-cu ...................................................................4

2. Abdominal male tergites 5–6 (female 5–7) each with two pairs of black quadrate spots, occasionally tergite 4 with a pair of brown round spots; surstylus short, nearly round and concaved at middle in lateral view; hypandrium nearly H-shaped in ventral view................................................................... H. (H.) degenerata Shi and Yang

- Abdomen without brown spots; surstylus and hypandrium not as above........................................... 3

3. Surstylus claviform, blunt round apically in lateral view; hypandrium Y-shaped with a middle ventral segment; phallus with an apical process in lateral view........................................................... H. (H.) sauteri Malloch

- Surstylus finger-like in lateral view and acute and rolled back at apex in ventral view; hypandrium broad bar-like in ventral view; phallus with a middle and distal dorsal process in lateral view...................... H. (H.) simplicissima (Meijere)

4. Abdomen without brown spots........................................................................... 5

- Abdomen with brown spots in different pattern..............................................................6

5. Wing with basal tips of R4+5 and CuA1 slightly brown; surstylus narrow, curved and acute apically with short setulae in lateral view.......................................................................... H. (H.) septentrionalis Loew

- Wing without brown basal tips of R4+5 and CuA1; surstylus claviform with apical teeth......... H. (H.) mediosPinosa Merz

6. Abdominal tergite 3 without brown spot, tergite 4 with a pair of black lateral transverse bands along posterior margin, tergites 5–6 each with a black medial stripe-like spot; surstylus consisting of a small acute triangular outer process and a large inner process in lateral view............................................................ H. (H.) conspicua Sasakawa

- Abdominal tergite 3 with a black medial spot close to posterior margin, tergite 4 black except for yellowish brown posterior margin and tergites 5 with a black medial spot and a pair of small black lateral spots, tergite 6 with a black medial spot; male unknown............................................................ H. (H.) longiplumaria Yang, Hu and Zhu