Larsia

Oliveira, Caroline Silva Neubern De & Silva, Fabio Laurindo Da, 2011, Two new species of Larsia Fittkau, 1962 (Diptera: Chironomidae: Tanypodinae) from Neotropical Region, with a checklist of Larsia species of the world, Zootaxa 2786, pp. 27-41 : 30

Key to the Neotropical pupae of Larsia

1. Lateral filaments on abdominal segment VII placed 2–2....................................... L. decolarata

– Lateral filaments on abdominal segment VII placed evenly far apart....................................... 2

2. Abdominal segments yellow........................................................... L. gelhausi sp. n.

– Abdominal segments pale brown to brown............................................................ 3

3. Respiratory atrium not having distinct central duct............................................... L. fittkaui

– Respiratory atrium with distinct central duct.......................................................... 4

4. Respiratory atrium with convulated surface not forming complete circles; genital sac without shagreen; tergite IV with setae D1, D2 and D3 aligned in straight line....................................................... L. reissi

– Respiratory atrium with convulated surface forming complete circles; genital sac with shagreen; tergite IV with setae D1, D2 and D3 not as above........................................................... L. hamadae sp. n.