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Three species of false click beetles (Coleoptera: Eucnemidae) are added to the Nearctic fauna. One new species, Isorhipis bicolor, is described from a small series collected in Florida, U.S.A. Eighteen specimens collected from Georgia were identified as Dyscharachthis amplicollis (Fleutiaux), new U.S.A. records for a species previously taken from Japan and Southeast Asia. Examination of a series of eucnemids collected by Kyle Schnepp in Florida allowed me to revisit the Deltometopus fauna in eastern North America. Antennal structures present in a series of male specimens in the loan and past examined specimens are definitive enough to resurrect Deltometopus ereptus Bonvouloir, status restored, from synonymy with Deltometopus amoenicornis (Say). Species identification keys are provided for Deltometopus Bonvouloir and Isorhipis Boisduval and Lacordaire in the Nearctic region. Diagnostic differences are briefly noted for each of the three newly added species found in the United States. Images of three species and the related D. amoenicornis are provided.
ZooBank registration. urn:lsid:zoobank.org:pub:30F462F1-966F-4A4F-9D10-BF967AED6574
Eucnemis Ahrens, 1812 (Coleoptera: Eucnemidae: Eucneminae: Eucnemini) is reviewed from the Nearctic region. Eucnemis americanus Horn is redescribed and illustrated and a new species, Eucnemis piceous Muona and Otto, is described and illustrated from Ontario, Canada and the United States from Wisconsin south to Kentucky, east to Massachusetts and West Virginia, north to Connecticut and Rhode Island. Thus, E. americanus is restricted to the western coastline of northern North America from northern California to northern Washington. A key is provided for the two species.
ZooBank registration. urn:lsid:zoobank.org:pub:00D66817-BDB5-4AEF-B703-CFA479510B81