Eugnamptine weevils of La Selva, Costa Rica (Coleoptera: Rhynchitidae)

Abstract

Twelve species of eugnamptine weevils (Coleoptera: Rhynchitidae) are recorded from the La Selva Biological Station in northeastern Costa Rica. They include 11 species of Eugnamptus Schoenherr and one species of Hemilypus Sharp. Eight of the 11 species of Eugnamptus are new species: E. balius, E. bellus, E. herediensis, E. longiusculus, E. pusillus, E. rostralis, E. sarapiquensis, and E. sulcicollis. The single species of Hemilypus and three of the 11 Eugnamptus species are known valid species: H. obliteratus Sharp, E. basalis Sharp, E. laticeps Voss, and E. suturalis Sharp. Lectotypes are designated for E. laticeps Voss, E. basalis Sharp, E. suturalis Sharp and H. obliteratus Sharp. Eugnamptus godmani Sharp is treated as a new synonym of E. basalis Sharp. Each species is treated in standard taxonomic fashion and a key to the La Selva species based on adult color and external morphology is provided. Digital habitus images, aedeagal illustrations and botanical associations are also provided.