Review of the genus Zygonoides, with description of the larvae and notes on 'zygonychine' Libellulidae (Odonata)

Abstract

Zygonoides Fraser, 1957 - formerly considered a subgenus of Olpogastra Karsch, 1895 - is reinstated as a genus. It comprises Z. fuelleborni (Grünberg, 1902), Z. fraseri (Pinhey, 1956), Z. lachesis (Ris, 1912) and Z. occidentis (Ris, 1912). The latter was formerly considered a subspecies or form of Z. fuelleborni, but is found to be a good species near Z. fraseri. The larvae of Z. fuelleborni, Z. fraseri and Z. occidentis are described. Adult and larval characters are compared with those of the other 'zygonychine' genera Celebothemis, Olpogastra, Onychothemis, Zygonychidium and Zygonyx. Identification, distribution and ecology of the species are outlined.