Polypedilum

Oyewo, Emmanuel Adeoye & Saether, Ole A., 2008, Revision of Polypedilum (Pentapedilum) Kieffer and Ainuyusurika Sasa et Shirasaki (Diptera: Chironomidae), Zootaxa 1953, pp. 1-145 : 33-34

Key to known pupae of Polypedilum subgenus Pentapedilum

1. Tergite II without shagreen or with a few scattered median points ........................................................... 2

- Tergite II with sparse to extensive, weak to strong, median and/or posterior shagreen ............................ 5

2. Tergite II completely without shagreen; either only tergite II–IV with strong anterior band of spines and conjunctive III/IV bare, or tergites III, VII, and VIII without shagreen.................................................... 3

- Tergite II with a few scattered median points or occasionally bare; tergite II–VI with strong anterior band of spines; conjunctives III/IV and IV/V each with bands of spinules; at least tergite VII with some shagreen ..................................................................................................................................................... 4

3. Tergite II and III each with strong anterior band of spines and without shagreen (IV–VI lacking in known specimen); VII and VIII both without shagreen; anal lobe with 40 taeniae; pedes spurii B on tergite II well developed ( Fig.18A–D) ............................................................................. P. (Pe.) exsectum (Kieffer)

- Tergite II–IV with strong anterior band of spines; tergite III with 2 patches of weak median shagreen, IV–VI with a band of median and 2 patches of shagreen, VII and VIII with 2 anterolateral patches of fine spinules; pedes spurii B on segment II not well developed; conjunctive III/IV bare. ................................ .................................................................................................................................... P. (Pe.) leei Freeman

4. Tergite II with at most a few median points; median fields of shagreen on tergites IV–VI entirely separated from anterior band and posterior fields; anal lobe with 26–39 taeniae ( Fig. 17A–E). ...................... ............................................................................................................... P. (Pe.) epleri Oyewo et Jacobsen

- Tergite II with extensive median shagreen, median fields of shagreen on tergites IV connected to the anterior band or to posterior fields; anal lobe with 20–26 taeniae .......................... P. (Pe.) tritum (Walker)

5. Conjunctives III/IV without spinules........................................................................................................ 6

- Conjunctives III/IV with spinules.............................................................................................................. 7

6. Anal lobe with 10–13 taeniae; tergites III–V with strong anterior band of spines; pedes spurii B not well developed on segment II ( Fig. 27) ....................................................................... P. (Pe.) nubens Edwards

- Anal lobe with 39–53 taeniae; tergites II–VI with strong anterior band of spines; tergite VIII bare; pedes spurii B well developed on segment II ( Fig.34 A–G) ................................ P. (Pe.) sordens (van der Wulp)

7. Tergites VII and VIII bare......................................................................................................................... 8

- Tergite VII at least with some spinules...................................................................................................... 9

8. Tergites II–VI with 2 patches of posterior shagreen; pedes spurii B well developed on segment II; caudolateral spur with 1 apical and 3 lateral teeth .......................................... P. (Pe.) convexum (Johannsen)

- Tergite II with weak median shagreen, III–VI with extensive median shagreen; pedes spurii B not known; caudolateral spur 3 or 4 forked ............................................................. P. (Pe.) kasumiense (Sasa)

9. Tergite II with only a posterior band of shagreen; tergite VII with anterior and paired posterior patches of spinules, VIII with anteromedian patch of spinules ................................................. P. (Pe.) K1 Cranston*

- Tergite II with some median shagreen; tergite VII with anterolateral spinules; VIII bare. .................... 10

10. Tergites II–VI with strong anterior band of spines; pedes spurii B on segment II comparatively well developed ( Fig. 40) ................................................................................ P. (Pe.) uncinatum (Goetghebuer)

- Tergite II with moderately strong anterior band of spines; pedes spurii B on segment II apparently weak or absent ( Fig.32C) .......................................................................................... P. (Pe.) shirokanense (Sasa)