Clypeocaenis Soldán 1978

Srinivasan, Pandiarajan, Sivaruban, T., Barathy, S., Isack, Rajasekaran & Jacobus, Luke M., 2022, A new species of Clypeocaenis Soldán 1978 (Ephemeroptera: Caenidae) from Tamil Nadu, India, Zootaxa 5091 (3), pp. 467-476 : 475

Key to Indomalayan larvae of Clypeocaenis Soldán 1978

(based on Balasubramanian & Muthukatturaja 2021)

1. Frontal protrusion with only two setae..................................................................... 2

- Frontal protrusion with more than two setae................................................................ 5

2. Frons strongly protruding, extending to the proximal margin of the second antennal segment................................................................................................... Clypeocaenis malzacheri sp. nov.

- Frons not as strongly protruded as above................................................................... 3

3. Flagellum segments shorter near the base of flagellum....................................... Clypeocaenis bisetosa

- All flagellum segments subequal in length................................................................. 4

4. Posterior margin of abdominal tergum VII with a distinct protuberance....................... Clypeocaenis femorisetosa

- Posterior margin of abdominal tergum VII without any protuberance...................................................................................................... to Balasubramanian & Muthukatturaja 2021: couplet 3

5. Frontal protrusion with less than ten setae............................................... Clypeocaenis oligosetosa

- Frontal protrusion with more than ten setae................................................................. 7

6. Frontal protrusion with 10–15 setae.................................................... Clypeocaenis multisetosa

- Frontal protrusion with 20–35 setae....................................................... Clypeocaenis soldani