Portelmis guianensis sp. nov. from French Guiana (Coleoptera: Elmidae)

摘要

Portelmis guianensis sp. nov. is a new member of the Portelmis gurneyi-group. It was collected in Sinnamary, northern French Guiana. The species is externally similar to the other members of the genus, but males deviate considerably by the shape of the aedeagus. A detailed description and figures are given to facilitate easy identification of the new species. In addition, we have modified the key to species for males of the P. gurneyi-group given in Fernandes et ai. (2010) by including the new species. The genus Portelmis Sanderson, 1935 now contains 5 members.