Compterosmittia

Lin, Xiaolong, Yao, Yuanyuan, Liu, Wenbin & Wang, Xinhua, 2013, A review of the genus Compterosmittia Saether, 1981 (Diptera: Chironomidae) from China, Zootaxa 3669 (2), pp. 129-138 : 137

Key to adult males of Compterosmittia in the world

1. Anal lobe of wing well developed......................................................................... 2

- Anal lobe of wing reduced.............................................................................. 3

2. Cu1 strongly sinuous, inferior volsella moderately projected........................... C. togalimea (Sasa et Okazawa)

- Cu1 moderately sinuous, inferior volsella strongly projected.............................. C. tuberculifera (Tokunaga)

3. Antenna with 10 or 12 flagellomeres...................................................................... 4

- Antenna with 13 flagellomeres........................................................................... 5

4. Antenna with 10 flagellomeres, AR 0.97................................... C. aberrans Mendes, Andersen et Saether

- Antenna with 12 flagellomeres, AR 0.35–0.39................................................ C. duodecima sp. n.

5. AR low 0.40........................................................... C. oyabelurida (Sasa, Kawai et Ueno)

- AR> 0.60........................................................................................... 6

6. Inferior volsella single-lobed, rounded, strongly projecting..................................................... 7

- Inferior volsella bilobed, anterior lobe digitiform bare, posterior lobe more or less roundish......................... 12

7. Virga present......................................................................................... 8

- Virga absent......................................................................................... 10

8. Anal point nearly parallel-sided, virga only with single plate..................... C. tsujii (Sasa, Shimomura et Matsuo)

- Anal point triangle, virga obvious, with spines............................................................... 9

9. Virga composed of 1 strong, medial spine.......................................................... C. lii sp. n.

- Virga composed of 16–18 spines............................................................... C. virga Wang

10. Anal point well developed, with several strong lateral setae................................. .. C. pectinata (Freeman)

- Anal point short, with few and weak setae.................................................................11

11. Supraalar seta absent, megaseta not dentate.................................. C. croizati Mendes, Andersen et Saether

- Supraalar setae present, megaseta dentate..................................................... C. nerius (Curran)

12. Megaseta dentate..................................................................... C. dentispina (Saether)

- Megaseta not dentate..................................................................................13

13. Anal point moderately long with blunt apex, supraalar seta(e) present............. C. pittieri Mendes, Andersen et Saether

- Anal point slender with pointed apex, supraalar seta absent.................................................... 14

14. Antepronotum without seta, pseudospurs present................................................ C. procera sp. n.

- Antepronotum with several setae, pseudospurs absent............................ C. berui Mendes, Andersen et Saether