Back to Coleoptera Checklist

Back to Species Webpage List

Coleoptera of Great Smoky Mountains National Park Species Pages

Family Carabidae

            Tribe Harpalini

 Amphasia  (s.str.) interstitialis  (Say)

Description and Taxonomy

Length 8.5-10.2mm. This medium-sized anisodactyloid harpaline is distinguishable from similar species by the combination of color pattern and densely setose iridescent elytra. Also, it has a simple (lanceolate) apical spur on the front tibia and possesses unicolorous testaceous legs (Lindroth 1968).  The genus is restricted to North America and contains only two species, both of them are currently recorded  from GSMNP (Ball and Bousquet 2001).

Life History

The species is mesophilous and confined to lowland habitats, such as wet grasslands or mesic hardwoods. In GSMNP adults can be found under rocks in grassy areas or in litter under hardwood canopy at low altitudes (400-750m). The species  has been taken repeatedly repeatedly in Malaise traps. Specimens from GSMNP were collected during March-September.


The species is distributed throughout eastern North America from Quebec and Ontario to Tennessee and northern South Carolina (Bousquet and Larochelle 1993).

Conservation Concerns

Not under threat.

Habitat of  Amphasia interstitialis.



Locality records in GSMNP.


Development of these pages was supported by grants from Discover Life in America and the National Science Foundation (DEB-0516311). Habitat photograph, Igor M. Sokolov, Louisiana State University.


Ball, G. E., and Y. Bousquet. 2001.  6. Carabidae  Latreille, 1810. In: American Beetles. Vol.1. CRC Press. 32-132 pp.

Bousquet, Y., and  A. Larochelle. 1993. Catalogue of the Geadephaga  (Col. Trachypachidae, Rhysodidae, Carabidae, incl. Cicindelini) of America north of Mexico. Entomological Society of Canada, Memoir No.167. 395 pp.

Lindroth, C.H. 1968. The ground-beetles (Carabidae, excl.Cicindelinae) of  Canada and Alaska. Part 5. Opuscula Entomologica. Supplementum No.33. 649-944pp.

Posted 20 Sep. 2006, I. M. Sokolov, Louisiana State Arthropod Museum.

Back to Coleoptera Checklist

Back to Species Webpage List