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Coleoptera of Great Smoky Mountains National Park Species Pages

Family Histeridae

            Tribe Hololeptini

 Hololepta aequalis (Say)

Description and Taxonomy

Length 8.0-11.5 mm. The genus belongs to the tribe Hololeptini, which is characterized by the presence of a narrow prosternal lobe, free labrum, antennal cavities situated under anterior angles of the pronotum, dentate protibiae with sinuate protarsal furrow, antennal club with V-shaped annuli, porrect head with strongly projecting mandibles and flattened body (Kryzhanovskij & Reichardt 1976, Kovarik & Caterino 2000). One genus of the tribe is found in eastern N. America, with two widespread species both recorded in GSMNP.  This species may be diagnosed from its other congener by the strongly abbreviated 1s dorsal striae, thus lacking a complete dorsal striae.

Life History

The species is found under the bark of freshly dead trees, primarily poplars, but also willows, elms, tulip trees and pines (Bousquet & Lapalante 2006), The primary food sources for these beetles are most probably larvae of large xylophilous flies (Kovarik & Caterino 2005).  In GSMNP, the species was collected under bark at several locations at 525-1370 m elevation.


 Widespread in N America, from British Columbia and Quebec to Florida and Texas (Bousquet & Lapalante 2006).

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).


Bousquet, Y. and S. Laplante. 2006.  Coleoptera Histeridae. The insects and arachnids of Canada. Part 24. NRC Research press, Ottawa. 485 pp.

Kovarik, P.W. and M. S. Caterino.  2000. Histeridae. Pp. 212-227 in: Arnett, R. H. and M. C. Thomas (eds.) American beetles. Vol. 1. CRC Press, Boca Raton  - London - New York - Washington.

Kovarik, P.W. and M. S. Caterino.  2005. Histeridae. Pp. 190-222 in: Beutel, R. and R. A. B. Leschen (eds.) Handbuch der Zoologie. Vol. IV (38). Walter de Gruyter: Berlin - New York.

Kryzhanovskij, O. L. and A. N. Reichardt. 1976. Histeroidea. fauna of the USSR. Vol. V (4). Nauka: Moscow - Leneingrad. 433 pp.


 Posted 13 August  2007, A. K. Tishechkin, Louisiana State Arthropod Museum.

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