A review of the genus Cryptotendipes Lenz (Diptera: Chironomidae) from China Author Yan, Chuncai Author Tang, Hongqu Author Wang, Xinhua text Zootaxa 2005 1086 1 24 journal article 10.5281/zenodo.170487 ff62d4b5-4440-4b6b-8b7b-9490a3b70c30 1175­5326 170487 Key to males of Cryptotendipes Lenz 1. Inner margin of gonostylus with basal or median projection........................................ 2 ­ Inner margin of gonostylus without projection ........................................................... 19 2. Inner margin of gonostylus with median projection ..................................................... 3 ­ Inner margin of gonostylus with basal projection....................................................... 11 3. Anal point short, not longer than superior volsella ....................................................... 4 ­ Anal point relatively long, longer than superior volsella .............................................. 5 4. Superior volsella columniform and straight, anal point rounded at apex........................ ................................................................. C. nigronitens ( Edwards, 1929 ) (Palaearctic) ­ Superior volsella digitiform and curved, anal point pointed at apex .............................. ......................................................................... C. pflugfelderi Reiss, 1964 (Palaearctic) 5. Anal point with setae in basal half ................................................................................ 6 ­ Anal point entirely without setae .................................................................................. 7 6. AR 2.4, superior volsella with 2 apical setae and without lateral setae .......................... ....................................................................... C. usmaensis ( Pagast, 1931 ) (Palaearctic) ­ AR 1.58, superior volsella with 1 apical seta and 2 lateral setae .................................... .............................................................. C. tobatertius Kikucki & Sasa, 1990 (Oriental) 7. Superior volsella without microtrichia ............... C. emorsus ( Townes, 1945 ) (Nearctic) ­ Superior volsella with microtrichia ............................................................................... 8 8. Anal tergite with high ridge ............................ C. casuarius ( Townes, 1945 ) (Holarctic) ­ Anal tergite without ridge.............................................................................................. 9 9. Superior volsella distinctly bilobed C. daktylos (Walley in Curran, 1934 ) (Neotropical) ­ Superior volsella not bilobed....................................................................................... 10 10. Superior volsella curved, swollen at apex and truncate, anal point tapering to point..... .............................................................................. C. pilicuspis Saether, 1977 (Nearctic) ­ Superior volsella straight, not swollen at apex, anal point parallel­sided to point.......... ..................................................................................... C. parallelus sp. n. (Palaearctic) 11. Tergite IX with pair of dorsal or ventral lobes ............................................................ 12 ­ Tergite IX without lobes.............................................................................................. 14 12. Frontal tubercles absent, superior volsella pointed at apex, without microtrichia.......... .......................................................... C. tobasecundus Kikucki & Sasa, 1990 (Oriental) ­ Frontal tubercles present, superior volsella obtuse at apex, covered by microtrichia.13 13. Bands of tergite IX joined, superior volsella constricted in middle, widened at apex.... ............................................................................... C. acalcar Reiss, 1990 (Palaearctic) ­ Bandsoftergite IXseparated,superior volsellaslightly swollen in middle,roundedat apex .................................................... C. mongolkeleus ( Sasa & Suzuki, 1997 ) (Palaearctic) 14. Tergite IX with distinct caudolateral shoulders ... C. darbyi ( Sublette, 1960 ) (Holarctic) ­ Tergite IX without caudolateral shoulders .................................................................. 15 15. Superior volsella covered by microtrichia .................................................................. 16 ­ Superior volsella without microtrichia........................................................................ 17 16. AR 2.26–2.66, superior volsella twice as wide at base as at middle, gonostylus obtuse at apex ........................................ C. mongoljekeus ( Sasa & Suzuki, 1997 ) (Palaearctic) ­ AR 3.1–3.5, width of superior volsella at base equal to at middle, gonostylus pointed at apex ..................................................................... C. ariel ( Sublette, 1960 ) (Nearctic) 17. Anal point without lateral setae ........ C. daitogeheus Sasa & Suzuki, 2001(Palaearctic) ­ Anal point with lateral setae........................................................................................ 18 18. Gonostylus rounded at apex, superior volsella straight, with apical and lateral setae. LR 1.34–1.44 ................................... C. mongolijeus Sasa & Suzuki, 1997 (Palaearctic) ­ Gonostyluspointedatapex,superiorvolsellacurved,withapical setaeonly.LR1.69–1.84 ............................................................................. C. nodus sp. n. (Oriental, Palaearctic) 19. Tergite IX with distinct caudolateral shoulders........................................................... 20 ­ Tergite IX without caudolateral shoulders .................................................................. 21 20. Anal point widest at base, parallel­sided, superior volsella not sclerotized.................... .................................................................................. C. lenzi Zorina, 2001 (Palaearctic) ­ Anal point widest at apex, superior volsella sclerotized ................................................. ........................................................................... C. secundus Zorina, 2003 (Palaearctic) 21. Gonostylus apically pointed .................................. C. holsatus Lenz, 1959 (Palaearctic) ­ Gonostylus apically rounded .............. C. pseudotener (Goetghebuer, 1922) (Holarctic)