A new species of Languidipes Hubbard (Ephemeroptera, Polymitarcyidae) from Borneo

Abstract

The genus Languidipes is currently represented by three species distributed in southeasternAsia, India, and Sri Lanka. Languidipes corporaali is the most widely distributedspecies, and both, male and female imagos, as well as nymphs, are known. In contrast,the other species, L. taprobanes and L. lithophagus, are only known from nymphs. Here,we describe a new species, Languidipes janae sp nov, based on male imagos collectedfrom Borneo, Indonesia. This new species is characterized by the presence of ommationon mesonotum, and penis almost completely divided, with sub-quadrate base and asmall outer projection basal to the long and slender distal arms. This constitutes the firstrecord of the genus for Borneo. A cladistic analysis of the subfamily Asthenopodinaesupports its taxonomic status.