Polypedilum (Cerobregma)

Lin, Xiao-Long, Yu, Hai-Jun, Zhang, Rui-Lei & Wang, Xin-Hua, 2019, Polypedilum (Cerobregma) heberti sp. n. (Diptera: Chironomidae) from Gaoligong Mountains, Yunnan, China, Zootaxa 4571 (2), pp. 255-262 : 261

Key to known adult males of the Polypedilum (Cerobregma)

modified from Saether and Sundal (1999) and Zhang and Wang (2005)

1. Wing with distinct spots................................................................................ 2

- Wing without distinct spots.............................................................................. 6

2. Palpomeres reduced, palpomeres 4 and 5 combined about as long as palpomere 3; Sudan..... P. brevipalpe Saether et Sundal

- Palpomeres normal, palpomere 5 about twice as long as palpomere 3............................................. 3

3. Antepronotum setose................................................................................... 4

- Antepronotum bare.................................................................................... 5

4 Superior volsella with two outer setae; France.......................................... P. lotensis Moubayed-Breil

- Superior volsella without outer seta; Ghana, Tanzania................................. P. volselligum Saether et Sundal

5 Wing with several spots; setae along inner margin of gonostylus strongly split; South of Sahara........ P. ramiferum Kieffer

- Wing with a large black spot on the entire basal half area of wing; setae along inner margin of gonostylus not split; Oriental China................................................................................... P. heberti sp. n.

6 Antepronotum setose................................................................................... 7

- Antepronotum without seta............................................................................. 10

7 Anal point broad, tapering towards apex; Canada and USA....................................... P. ontario (Wally)

- Anal point narrow, parallel-sided......................................................................... 8

8 Apical process of superior volsella with strong outer seta in apical half........................................... 9

- Apical process of superior volsella without strong outer seta in apical half........................... P. okigrandis Sasa

9 Fore tibial scale pointed; tergite IX with strongly sclerotized circle; China...................... P. cyclus Zhang et Wang

- Fore tibial scale rounded; tergite IX without strongly sclerotized circle; China and Japan........ P. yamasinense (Tokunaga)

10 Scutum with weak tubercle............................................................................. 11

- Scutum without tubercle............................................................................... 12

11 Superior volsella with one long outer seta; R 2+3 distinct; China.................................. P. jii Zhang et Wang

- Superior volsella without outer seta; R 2+3 evanescent; China......................... P. exilicaudatum Saether et Sundal

12 Anal point broad, not parallel-sided; legs ringed with white................................................... 13

- Anal point narrow, parallel-sided; legs not ringed........................................................... 14

13 Anal point broad with strong median swelling and apical additional point; Ghana....... P. bulbocaudatum Saether et Sundal

- Anal point awl-shaped without additional apical point; Ghana.......................... P. subulatum Saether et Sundal

14 AR 0.54–0.91; tergite IX with two setae; superior voslella low and broad; China.................... P. paucisetum Zhang

- AR 1.15; tergite IX with more than 40 setae; superior volsella curved and tapered; France....... P. saetheri Moubayed-Breil