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Coleoptera of Great Smoky Mountains National Park Species Pages

Family Histeridae

            Tribe Paromalini

 Paromalus seeversi Wenzel

Description and Taxonomy

Length 1.9-2.3 mm. The genus belongs to the tribe Paromalini, which is characterized by more or less dorsoventrally flattened bodies, expanded pro-, but not meso- and metatibiae, presence of narrow prosternal lobe with a "lock" for the protibial spur, short epistoma and long basal piece of the aedeagus (Kryzhanovskij & Reichardt 1976, Mazur 1993, Caterino & Vogler 2002). Among genera of Paromalini, Paromalus may be diagnosed by the lack of dorsal and prosternal carinal striae.  Paromalus bistriatus differs from the other congeners in the GSMNP by the presence of background alutaceous microsculpture on the body surface, interrupted frontal stria and lack of elytral sutural striae.

Life History

This species seems to be associated with tree holes containing accumulated moist organic debris (Kovarik & Caterino 2001, Bousquet & Laplante 2006). Also a record from a mouse nest exists (Bousquet & Laplante 2006). The only specimen from GSMNP was collected in a Sante canopy trap during May at 635 m elevation.


Widespread in eastern N. America, but the distribution is poorly know since the species is rather rare in collections. Extreme distributional records include Ontario, South Dakota, Oklahoma and Alabama (Bousquet & Laplante 2006, Tishechkin, unpublished).

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.

Caterino, M. S. and A. P. Vogler. 2002. The phylogeny of the Histeroidea (Cleoptera: Staphyliniformia). Cladistics 18: 394-415.

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.

Mazur, S. 1993. Notes on new and little known oriental Histeridae (Col.). Revue Suisse de Zoologie 100: 211-219.

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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