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Species Diacheila arctica

Diachelia - Diacheila arctica - female Diacheila arctica Diacheila arctica Diacheila arctica, rare northern Carabid - Diacheila arctica
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Carabidae (Ground Beetles)
Subfamily Elaphrinae
Genus Diacheila
Species arctica (Diacheila arctica)
Synonyms and other taxonomic changes
subspecies amoena
=Diacheila americana Motschulsky
=Diacheila subpolaris LeConte
Size
7-9 mm (Lindroth 1961)
Identification
Black with brassy, coppery or greenish lustre, mandibles, tibiae and often tarsi reddish brown. Slenderer, more parallel-sided than polita. Prothorax with lateral carina, sides slightly sinuate in basal half. Elytra with regular rows of fine punctures, 5. stria foveate at base inside the protruding shoulders; microsculpture isodiametric over the entire surface. Wings fully developed (greatly reduced in D. polita). (Lindroth 1961)
Range
Holarctic circumpolar; in NA, known from LB, NT, AK(1)(2)
Habitat
margins of small lakes/ponds, dry tundra(1); strongly hygrophilous (Lindroth 1961)
Life Cycle
Overwinter as adults
Remarks
very rare (Lindroth 1961)
Print References
Lindroth C.H. (1961, 1963, 1966, 1968, 1969a,b) The ground-beetles (Carabidae, excl. Cicindelinae) of Canada and Alaska, Parts 1-6. Opuscula Entomologica Supplementum XXXV: 1-1192, I-XLVIII.