Bayadera, Selys, 1853

Yang, Guo-Hui & Orr, Albert G., 2024, The final-instar larva of Bayadera strigata Davies & Yang, 1996 from Yunnan, China (Odonata: Zygoptera: Euphaeidae), International Journal of Odonatology 27, pp. 11-18 : 16

A key to the larvae of six species of the genus Bayadera

1. 1–3 long spines on genae; prementum long, ratio of length:width> 1.2 ................................ B. serrata

1’. Spines on the genae either lacking or small and numerous ............................................................... 2

2. Genae with short spines ......................................... 3

2’. Genae lacking obvious spines ................................. 4

3. Prementum short, ratio of length:width <1.2, only two well-developed short spines on genae .................................................................... B. indica

3’. Prementum long, ratio of length:width> 1.2,6– 10, well-developed short spines on genae ............... ................................................................. B. strigata

4. Labial palp with only two clear lobes; inner lobe vestigial and pointing inward ............... B. bidentata

4’. Labial palp with normal terminal processes, with three lobes ............................................................. 5

5. Ratio between max. head width and prothorax> 1.4 ................................................... B. ishigakiana

5’. Ratio between max. head width and prothorax <1.4 .................................................... B. brevicauda