Corynoneura Winnertz

Fu, Yue & Saether, Ole A., 2012, 3536, Zootaxa 3536, pp. 1-61 : 51

Key to known Nearctic males of Corynoneura Winnertz

1. Inferior volsella absent or barely indicated as a long low inner margin of gonocoxite................................ 2

– Inferior volsella present................................................................................. 3

2. Superior volsella joined medially and not projecting........................................ C. arctica Kieffer, 1923

– Superior volsella separated medially and conspicuously projecting............................................................................................................................... C. edwardsi Brundin, 1949

3. Apex of hind tibia slightly expanded; apical seta of hind tibia nearly straight....................................... 4

– Apex of hind tibia distinctly expanded; apical seta of hind tibia distinctly curved, S-shaped........................... 5

4. Antenna with 11 flagellomeres; the middle part of gonostylus not expanded and apically hooked; superior volsella triangular; inferior volsella small, digitiform........................................................... C. capitanea sp. n.

– Antenna with 12 flagellomeres; the middle part of gonostylus expanded and slightly curved; superior volsella narrow; inferior volsella arranged along the inner margin of gonocoxite, with many strong setae...................... C. disinflata sp. n.

5. Transverse sternapodeme absent, lateral sternapodemes meeting in sharp point..................................... 6

– Transverse sternapodeme present......................................................................... 8

6. Inferior volsella small, digitiform; gonostylus with inner lobe............................. C. scutellata Winnertz, 1846

– Inferior volsella distinct and rectangular or tongue-shaped; gonostylus without inner lobe............................ 7

7. Inferior volsella tongue-shaped, placed basally on gonocoxite..................................... C. porrecta sp. n.

– Inferior volsella small rectangular, placed caudally on gonocoxite............................ C. lobata Edwards, 1924

8. Superior volsella digitiform, with very long setae.......................................... C. fittkaui Schlee, 1968

– Superior volsella not digitiform, without very long setae....................................................... 9

9. Phallapodeme not scalpel-like, curved, relatively long........................................................ 10

– Phallapodeme scalpel-like, slightly bent, relatively short...................................................... 11

10. Attachment point of lateral sternapodeme with phallapodeme placed in caudal position of sternapodeme and caudally directed............................................................................... C. lacustris Edwards, 1924

– Attachment point of lateral sternapodeme with phallapodeme placed in caudal third of lateral sternapodeme............................................................................. C. doriceni Makarchenko et Makarchenko, 2006

11. Transverse sternapodeme narrow........................................................................ 12

– Transverse sternapodeme wide.......................................................................... 14

12. Antenna with 12–13 flagellomeres.................................................. C. celeripes Winnertz, 1852

– Antenna with 9–10 flagellomeres........................................................................ 13

13. Antenna with 9 flagellomeres, AR 0.49–0.52; superior volsella separated, pointed triangular........... C. acuminata sp. n.

– Antenna with 10 flagellomeres, AR 0.35–0.36; superior volsella anteromedially fused, small and rounded.. C. ascensa sp. n.

14. Attachment point of lateral sternapodeme with phallapodeme placed in lateral sternapodeme......................... 15

– Attachment point of lateral sternapodeme placed in caudal position of sternapodeme............................... 16

15. Antenna with short apical setae; tergite IX medially concave, with posterior humps and with indication of median mounds; superior volsella inconspicuous............................................................ C. caudicula sp. n.

– Antenna with long apical setae; tergite IX straight, without posterior humps and without indication of median mounds; superior volsella conspicuously projecting............................. C. collaris Makarchenko et Makarchenko 2010

16. Tergite IX without long setae; superior volsella joined medially................................. C. hortonensis sp. n.

– Tergite IX with long setae; superior volsella separated........................................................ 17

17. Antenna with 11 flagellomeres; inferior volsella with rounded corner............................. C. floridaensis sp. n.

– Antenna with 10 flagellomeres; inferior volsella digitiform, projecting............................... C. macula sp. n.