Leydigia (Neoleydigia) cf. striata Birabén, 1939 (Crustacea: Cladocera: Chydoridae) from Colombia and its differentiation from L. (N.) cf. ipojucae (Brehm, 1938)

This paper concerns the chydorid cladoceran Leydigia (Neoleydigia) cf. striata Birabén, 1939 in plankton samples from Ciénaga El Convento, Colombia. The specimen from Colombia bears the diagnostic features of L (N) cf. striata as redescribed by Kotov and Elías-Gutiérrez (2003), Kotov et al. (2004), and Kotov, (2009). However, this particular specimen shows some subtle differences in the morphology of basal spine of claw, spine-like setules on first and second endopod segments of antenna II, and striation on valve. In the Neotropics, L. (N.) cf. striata Birabén, 1939 most closely resembles L. (N.) cf. ipojucae Brehm, 1938 in the structure of thoracic limb II and postabdominal claw, but can be separated from the latter by differences in setules in lateral fascicles on labrum, postpore distance (PP), shape of postabdomen, preanal margin of the postabdomen, and seta 2 of thoracic limb III.