Taxonomic review on the subgenus Tripodura Townes (Diptera: Chironomidae: Polypedilum) from China with eleven new species and a supplementary world checklist Author Zhang, Ruilei Author Song, Chao Author Qi, Xin Author Wang, Xinhua text Zootaxa 2016 4136 1 1 53 journal article 10.11646/zootaxa.4136.1.1 98dfcf93-7454-4d14-b34e-9b39b6bbfd1c 1175-5326 399782 F8A4AE64-AD35-4FC5-966C-90FAC6588827 Key to male imagines of Polypedilum ( Tripodura ) Townes from China 1. Tergite IX without lateral projections or shoulders............................................................ 2 - Tergite IX with lateral projections or conspicuous shoulders.................................................... 9 2. Anal point elongation extremely reduced.................................. P. ( T. ) conghuaense Zhang & Wang sp. n. - Anal point elongation normal............................................................................ 3 3. Anal point slender and nearly parallel-sided................................................................. 4 - Anal point broad or apically expanded..................................................................... 5 4. AR 0.80, terminal scale of front tibia oval and apically rounded, superior volsella with 3–5 long apical setae............................................................................................. P . ( T .) masudai (Tokunaga) - AR 1.32–1.66, terminal scale of front tibia triangular and apically pointed, superior volsella with 2 long apical setae...................................................................................... P. ( T. ) udominutum Niitsuma 5. Wing without markings, anal lobe reduced............................... P . ( T .) absensilobum Zhang & Wang sp. n. - Wing with markings, anal lobe normal..................................................................... 6 6. Superior volsella spatulated and inferior volsella with less than 5 setae............................... P . ( T .) spathum Zhang & Wang - Superior volsella pad-like and inferior volsella with more than 10 setae........................................... 7 7. Terminal scale of fore tibia pointed, distal margin of superior volsella with 2–3 setae, anal point broad, distal part of r4+5 clear................................................................................................................................. P . ( T .) japonicum (Tokunaga) - Terminal scale of fore tibia rounded, distal margin of superior volsella with more than 19 setae, anal point spatula-shaped api- cally, distal part of r4+5 cloudy............................................................................ 8 8. Anal point with 6 setae at base, superior volsella goblet-shaped; gonostylus slender and apex narrowed...................................................................................................................................... P . ( T .) cypellum Qi et al . - Anal point with 2 rows of short setae on dorsal lamella, each row with 8−10 setae; superior volsella pediform; gonostylus moderately broad, apex not narrowed...................................................................... P . ( T .) harteni Andersen & Mendes 9. Anal point slender and almost parallel-sided, spot in cell m1+2 proximal to spot in cell r4+5........ P . ( T .) unifascia (Tokunaga) - Anal point broad or apically expanded, spot in cell m1+2 not proximal to spot in cell r4+5 or wing without marking........ 10 10. Wing without markings, superior volsella slender and S-shaped.......................... P . ( T .) procerum Zhang et al . - Wing with markings, usually boldly marked with several dark spots and clouds, sometimes faint and restricted to a few areas; superior volsella not S-shaped........................................................................... 11 11. Wing with 0–1 spot in cell r4+5.......................................................................... 12 - Wing with 2–3 spots in cell r4+5......................................................................... 17 12. Wing marking faint, without spot in cell r4+5, superior volsella sickle-shaped.......................... P . ( T .) falcatum Zhang et al . - Wing with 1 spot in cell r4+5, superior volsella not sickle-shaped................................................ 13 13. Fore tibial scale rounded apically.................................................... P . ( T .) scalaenum (Schrank) - Fore tibial scale pointed apically........................................................................ 14 14. Lateral projections of anal point strongly sclerotized and without microtrichia, the superior volsella clavate............................................................................... P . ( T .) nudiprostatum Zhang, Wang & Saether - Lateral projections of anal point covered with microtrichiae, the superior volsella trapezium-shaped or pad-like......... 15 15. The superior volsella trapezium-shaped, wing cloudy on distal margin............. P . ( T .) trapezium Zhang & Wang sp. n. - The superior volsella pad-like, wing clear on distal margin.................................................... 16 16. Gonostylus slender and parallel-sided basal 1/4, lateral projection of anal point slender, marking in cell m1+2 long and opposite to marking in cell r4+5.................................................... P . ( T .) parallelum Zhang & Wang sp. n. - Gonostylus not as above, lateral projection of anal point broad, marking in cell m1+2 long and distal to marking in cell r4+5................................................................................. P . ( T .) quadriguttatum Kieffer 17. Wing with 3 dark spots in cell r4+5...................................................................... 18 - Wing with 2 dark spots in cell r4+5........................................................................ 19 18. AR 1.80–1.95, superior volsella pad-like...................................... P . ( T .) decematoguttatum (Tokunaga) - AR 0.70–0.75, superior volsella clavate.................................. P . ( T .) mengmanense Zhang & Wang sp. n. 19. Setae on vein R4+5 less than 7 and situated distal 1/3 to apex................. P . ( T .) apiculusetosum Zhang & Wang sp. n. - Setae on vein R4+5 more than 15 and situated from basal 1/4 to apex............................................ 20 20. Superior volsella clavate.............................................................................. 21 - Superior volsella pad-like.............................................................................. 22 21. Superior volsella toe-like, narrowed in the middle, covered with microtrichia and with 3 apical setae........................................................................................... P . ( T .) pollicium Zhang & Wang sp. n. - Superior volsella slightly curved and gradually tapering to apex, with 2 strong spines directed inwards in middle and 1 outer sub-apical setae.............................................................. P . ( T .) bispinum Zhang & Wang 22. AR more than 1.10, the superior volsella with 6–7 apical setae....................... P . ( T .) cochlearum Zhang & Wang - AR less than 0.80, the superior volsella with 1–3 apical setae................................................. 23 23. The gonostylus expanded in the middle and bent like a bow...................... P . ( T .) arcuatum Zhang & Wang sp. n. - The gonostylus not expanded in the middle................................................................ 24 24. The spots in cell m1+2 dark and cloudy on wing distal margin..................... P. ( T. ) bilamella Zhang & Wang sp. n. - The spots in cell m1+2 faint and clear on wing distal margin.................................................... 25 25. AR 0.61. Superior volsella with 2 long apical setae. Anal point with transparent lobes in middle part........................................................................................ P . ( T .) napahaiense Zhang & Wang sp. n. - AR 0.28-0.40. Superior volsella with 1 long apical seta. Anal point lanceolate, without transport transparent lobe in middle part....................................................................... P . ( T .) dengae Zhang & Wang sp. n.