A new <I>Potamobates</I> Champion species (Heteroptera: Gerridae) from Ecuador with new distribution records for <I>P. williamsi</I> Hungerford

摘要

Potamobates sumaco new species is described from the Ecuadorian Amazon. Male and female genitalia differentiate P. sumaco from a similar parapatric species, P. williamsi Hungerford. Phylogenetic analysis indicates P. sumaco is closely related to the species of the P. tridentatus group which includes P. williamsi. A distribution map and revised key to Potamobates species are provided.