The adult of Cloeodes longisetosus (Braasch & Soldan, 1980) and revised description of the larva (Ephemeroptera: Baetidae)

Abstract

The first description of the adult stage of Cloeodes longisetosus (Braasch and Soldán) is provided based on specimens reared in the laboratory from larvae collected from Hong Kong, China. These larvae also are the basis for a revised description of the larval stage of C. longisetosus. Study of the larvae confirms the placement of the species in the genus Cloeodes Traver, and C. longisetosus larvae may be distinguished from larval congeners by their relatively short maxillary palp. Male adults of C. longisetosus have a pronounced rectangular median process between the forceps bases that is unique at least among known male adult congeners, and thus indicates that such a feature may or may not be present in Cloeodes.