Choroterpes, Eaton, 1881

Kubendran, T., Vasanth, M., Subramanian, K. A., Selvakumar, C., Jabeen, Fatima & Sivaramakrishnan, K. G., 2022, A new species of Choroterpes Eaton, 1881 (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from Western Himalaya, India, Records of the Zoological Survey of India 122 (3), pp. 237-245 : 244

Larval Key to the known Species of Subgenus Choroterpes in India

1. Gill 1 single; upper and lower lamellae of gills 2–7 with 3 apical processes, median process relatively slender and longer than laterals ................................................. 2

- Gill 1 double; upper and lower lamellae of gills 2–7 with 3 apical processes, median process relatively larger and longer than laterals .................................................... Choroterpes (C.) petersi

2. Gill 1 basally broad and distally lanceolate ....................................... Choroterpes (C.) kumaradhara

- Gill 1 not as above.......................................................... 3

3. Upper and lower lamellae of gills 2–7 broad.............. 4

- Upper and lower lamellae of gills 2–7 not broad ...................................... Choroterpes (C.) andamanensis

4. Claw apically hooked with a row of 13–14 denticles; anteromedian emargination of labrum with denticles ........................ Choroterpes (C.) girigangaensis sp. nov.

- Claw apically hooked with a row of 4–5 denticles, anteromedian emargination of labrum without denticles.................................... Choroterpes (C.) kaegies