Abstract A new species, Plectromerus roncavei (Coleoptera, Cerambycidae, Cerambycinae, Plectromerini), from Honduras and Nicaragua is described and illustrated. Features distinguishing the new species from its congeners as well as a modified key to species is presented. In addition, the previously unknown female of Plectromerus dezayasi Nearns & Branham, 2008 is described and illustrated.