PHYLOGENETIC SYSTEMATICS AND BIOGEOGRAPHY OF THE NEOEPHEMERIDAE (EPHEMEROPTERA, PANNOTA)

A revision of species of the pannote Holarctic and Oriental mayfly fam ily Neoephemeridae is presented. Three genera are recognized in a stri ctly phylogenetic classification. Potamanthellus [=Neoephemeropsis Ulm er syn. n.] includes P. caenoides (Ulmer) comb. n., P. amabilis (Eaten ) [=N. cuaraoensis Dang syn. n.], P. ganges sp, n., P. chinensis (Hsu) [=P. rants (Tiunova and Levanidova) syn. n.], P. edmundsi sp. n., and the Oligocene fossil Potamanthellus rubiensis Lewis. Neoephemera [=Le ucorhoenanthus Lestage syn. n.] includes N. maxima (Joly), N. purpurea (Traver), N. youngi Berner, N. bicolor McDunnough, and N. compressa B erner. Ochernova gen. n., includes O. tshernovae (Kazlauskas) comb. n. Taxa are described, illustrated and keyed. Species cladistics and bio geography are presented.