Carabidae, Coleoptera, Insecta, Arthropoda, Animalia
Matthew Denton, The Evergreen State College, Olympia, WA 98505 USA.
01 April 1997
|Key to spp.|species list|genus key|
Identification
This is one of the largest carabid genera, having a uniform appearance and a stout body, broad prothorax and short legs. Penultimate segment of the labial palp with three or more setae; length of the first tarsomere on the metatarsus distinctly shorter than the combined lengths of the second and third tarsomeres; last tarsal segment setose underneath.
Range
Paleartic, Nearctic, northern Oriental and eastern Afrotropical faunal regions.
Natural History
Fifty-five species are found in North America, north of Mexico. These beetles are found in a variety of habitats from open, xeric country to mesic habitats in temperate and tropical regions. Many are herbivorous, feeding on seeds and pollen as adults; the larvae are carnivorous. Wings are well developed in most species, some of which are able flyers.
1a Elytra without dorsal puncture. H. cordifer
1b Elytra with one dorsal puncture in apical third of interval three, often adjoining striae of second interval. H. nigritarsis
References
Kavanaugh, D. H. 1992. Carabid beetles (Insecta: Coleoptera: Carabidae) of the Queen Charlotte Islands, British Columbia. Memoirs of the California Academy of Sciences Number 16. California Academy of Sciences, San Francisco, California, USA.
Lindroth, C. H. 1961-1969. The ground beetles (Carabidae excl. Cicindelinae) of Canada and Alaska. Parts 1-6. Opuscula Entomologica xlviii + 1192 pp.
For information about this page: John T. Longino longinoj@evergreen.edu
Last modified: 04/01/1997