NEW GENUS OF OLIGONEURIIDAE (EPHEMEROPTERA) FROM SOUTH-AMERICA

A new genus and two species, Fittkauneuria carina Pescador & Edmunds a nd F. adusta Pescador & Edmunds, from the highlands of Venezuela and B razil, are described. The description of the genus is based on male im ago, egg, and nymphs. Fittkauneuria carina is described from male imag o and nymphs, whereas F. adusta is known only from nymphs. The male im ago of Fittkauneuria is distinguished by the relatively numerous cross veins of the fore- and hind wings and lack of genital forceps; the ny mph is distinguished by the epicranium which is strongly tapered anter iorly and has vestigial or weakly developed gill tufts. Preliminary cl adistic analysis of the family Oligoneuriidae indicates that Fittkaune uria shares synapomorphies with the African genera Elassoneuria and Ol igoneuriopsis and forms a monophyletic group.