Description of a new species of Platynus Bonelli from the Appalachian Mountains of eastern North America (Coleoptera, Carabidae)

Abstract

A new species of the genus Platynus Bonelli, P. daviesi, is describedfrom specimens collected in the Appalachian Mountains. The speciesis structurally most similar to P. parmarginatus Hamilton but differsin having the coloration of the body dorsally darker on average,the elytra proportionally longer and wider, the vertex and disc ofpronotum with well impressed microsculpture, the elytral interval3 with four or five discal setae in most specimens, and the medianlobe of aedeagus less curved overall. DNA barcoding was performedon several species of eastern North American Platynus species andP. daviesi was found to be genetically distinct from P. parmarginatus.A key to the 12 species of Platynus found east of the MississippiRiver is provided.