Neue Eintagsfliegen für die Fauna Bulgariens (Ephemeroptera).

Abstract

The author reports 4 genera and 17 species (16 larvae and 1 imago) of Ephemeroptera new to the fauna of Bulgaria and 4 species (imagines) which were hitherto known only as larvae and 1 species (larva) known only as imago. There is given a 'list of the Ephemeroptera of Bulgaria' reported up to now containing 68 species; 56 which are exactly determined as to specific characters.