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
"Species Details - 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 06 May. 2024.
References
Author
Bousquet, Yves and Andre Larochelle
Title
Catalogue of the Geadephaga (Coleoptera: Trachypachidae, Rhysodidae, Carabidae Including Cicindelini) of America North of Mexico
Publication Date
1993
Series Title
Memoirs of the Entomological Society of Canada
Pages
1-397
Author
Bell, R. T.
Title
Revision of the genus Chlaenius Bonnelli (Coleoptera, Carabidae) in North America.
Publication Date
1960
Series Title
Miscellaneous Publications of the Entomological Society of America.
Volume
1
Pages
98-170
Author
Lindroth, Carl H.
Title
The Ground-beetles of Canada and Alaska. Part 6.
Publication Date
1969
Series Title
Opuscula Entomologica
Volume
34
Pages
945-1192
Specimen Information
There are 61 specimens of this Species.
UASM292120 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Cranbrook
Collected ByBall; Madge; McFadden
Date Collected1960-06-09
UASM292121 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Cranbrook
Collected ByBall; Madge; McFadden
Date Collected1960-06-09
UASM292122 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Manitoba, Shoal Lake
Collected ByBall, G. E.
Date Collected1956-07-07
UASM292123 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Williams Lake
Collected ByBall, G. E.
Date Collected1958-06-05
UASM292124 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Williams Lake
Collected ByBall, G. E.
Date Collected1958-06-05
UASM292125 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Columbia Lake
Collected ByBall, G. E.
Date Collected1956-07-31
UASM292126 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Columbia Lake
Collected ByBall, G. E.
Date Collected1956-07-31
UASM292127 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Manitoba, Steinbach
Date Collected1984-07-30
UASM292128 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Yahk
Collected ByPohl, G. R.
Date Collected1989-06-13
UASM292129 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292130 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292131 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292132 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292133 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292134 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292135 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292136 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-05-07/1986-05-21
UASM292137 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca
Collected ByRypien, T.; Holmberg, R.
Date Collected1986-06-04/1986-06-18
UASM360683 - Chlaenius alternatus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Junction Creek
Collected ByCarr, J. L.
Date Collected1942-07-16