Species Details

Chlaenius alternatus

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

SeasonalityLarvae have been collected in early August. Adults have been collected in Alberta from mid-May to mid-July. IdentificationAdults: 10.5-14mm in length. Dorsal surface black and metallic though this can sometimes be faint. Pronotom often with a brassy or greenish hue laterally. Appendages black. Can be easily distinguished from all other Alberta species because all striae are broken at several points along their length; intervals are connected by convexities giving the elytral surface a transversely corrugated appearance; intervals 3, 5, 7, usually more convex. Setae behind pronotal shoulder are unicolorous, pale brown. Adapted from Bell 1960 and Lindroth 1963

Scientific Name Chlaenius alternatus Habitat
Have been collected on the borders of slow rivers with firm soil and vegetation consisting of Carex, Juncus, and Equisetum fluviatile. Others have been collected on lake shores among thick vegetation consisting of…
Have been collected on the borders of slow rivers with firm soil and vegetation consisting of Carex, Juncus, and Equisetum fluviatile. Others have been collected on lake shores among thick vegetation consisting of Naumburgia thyrsiflora, Triglochin palustre, Cicuta, Mentha, Carices, and a moss undercover of Drepanocladius aduncus.
Seasonality Larvae have been collected in early August. Adults have been collected in Alberta from mid-May to mid-July. Identification
Adults: 10.5-14mm in length. Dorsal surface black and metallic though this can sometimes be faint. Pronotom often with a brassy or greenish hue laterally. Appendages black. Can be easily distinguished from all other…
Adults: 10.5-14mm in length. Dorsal surface black and metallic though this can sometimes be faint. Pronotom often with a brassy or greenish hue laterally. Appendages black. Can be easily distinguished from all other Alberta species because all striae are broken at several points along their length; intervals are connected by convexities giving the elytral surface a transversely corrugated appearance; intervals 3, 5, 7, usually more convex. Setae behind pronotal shoulder are unicolorous, pale brown. Adapted from Bell 1960 and Lindroth 1963
Life History
Bell (1960) suggests that there is evidence that alternatus ranged far south of it's current distribution during the Ice Age as a species (C. plicatipannis) that is identical or closely related has been described from…
Bell (1960) suggests that there is evidence that alternatus ranged far south of it's current distribution during the Ice Age as a species (C. plicatipannis) that is identical or closely related has been described from the Sangamon Peat of central Illinois.
Conservation Relatively common. Diet Info Predatory, omnivorous. Range The most boreal species of all North American Chlaenius. Known from scattered records across Canada and far south as the Montana. Has been recorded in Alberta from the Cypress Hills to as far north as Athabasca.

Citation

Page Citation for Chlaenius alternatus

Page Citation

"Chlaenius alternatus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6304. Accessed 22 Sep. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Coleoptera Suborder Adephaga Superfamily Caraboidea Family Carabidae Subfamily Harpalinae Tribe Chlaeniini Genus Chlaenius Species Chlaenius alternatus
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum