Delouardus, a new Centroptiloides complex genus from Madagascar and its relationship with Cheleocloeon Wuillot & Gillies (Ephemeroptera : Baetidae)

Delouardus djabala gen. n. and sp. n. (Ephemeroptera: Baetidae) is based on a distinctive larva from Madagascar. The new genus belongs to the Centropt iloides complex of Afrotropical genera based on its possession of two rows of small, bluntly pointed denticles on the tarsal claws. Delouardus is dist inguished from other genera of the Centroptiloides complex by having the se cond segment of the labial palps deeply falcate apically, weakly pectinate setae on the legs, and elongate and weakly hooked tarsal claws. Character a nalysis revealed that Delouardus and Cheleocloeon are sister taxa, indicati ng that Cheleocloeon should also be included in the Centroptiloides complex , despite its derived claw characters.