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Coleoptera of Great Smoky Mountains National Park Species Pages

Family Eucnemidae

            Tribe Macraulacini

 Deltometopus amoenicornis (Say)

Description and Taxonomy

Length 2.7-4.8mm. The genus may be diagnosed by the following combination of characters: shallow, posteriorly expanded lateral antennal grooves, epipleura without groove, simple claws, pectinate antennae in males (Eastern species) and small size (less than 5 mm).  In the Nearctic Region, the genus is represented by two species, one of them is distributed in the east (Muona 2000) and found in GSMNP.

Life History

One of the more uncommon eucnemid species in GSMNP. A few specimens were collected in Malaise traps at Goshen Prong and Twin Creeks ATBI plots from mid July to mid August at 625 and 890 m elevation.  The species is known to develop in various deciduous and coniferous trees, i.e. Acer, Fagus, Pinus, Platanus and Quercus (Muona 2000).


Widespread and common eastern  North American species, known from South Dakota and Quebec to Texas and Florida (Muona 2000).

Conservation Concerns

Not under threat.


Locality records in GSMNP.


Development of these pages was supported by grants from Discover Life in America and the National Science Foundation (DEB-0516311). .


Muona, J. 2001.  A revision of North American Eucnemidae. Acta Zoologica Fennica 212: 1-106.


Posted 5 Feb. 2007, A. K. Tishechkin, Louisiana State Arthropod Museum.

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