Species Details
Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityImmatures have been collected in August. Adult in Alberta have been collected from mid-May to late July.
IdentificationAdults:10.4-11.9mm in length. Head and pronotum metallic green with pronotum often tinged with gold coloration. Pronotum relatively long and narrow in comparison to both C. lithophilus and C. nebraskensis. Also easily distinguished from C. lithophilus and C. nebraskensis as the head is smooth whereas the other species are punctate. Pronotal margins almost always sinuate. Legs, palpi, and antennal segments 1-3 yellow-brown to orange brown; antennal segments 4-11. Elytra with sides parallel, slightly convex; stria deep but narrow, with fine, close, inconspicuous puntures; intervals flat and densely punctate; microsculpture granular but fine and shiny in appearance; punctures are however, muricate, giving the surface a rough appearance. Pronotum with more strongly curved sides than C. nebraskensis; lateral margin red-brown to black. Adapted from Bell 1960.
Scientific Name
Chlaenius pennsylvanicus
Habitat
Usually at the border of small standing waters but also recorded from sphagnum bogs in the U.S.
Seasonality
Immatures have been collected in August. Adult in Alberta have been collected from mid-May to late July.
Identification
Adults:10.4-11.9mm in length. Head and pronotum metallic green with pronotum often tinged with gold coloration. Pronotum relatively long and narrow in comparison to both C. lithophilus and C. nebraskensis. Also…
Adults:10.4-11.9mm in length. Head and pronotum metallic green with pronotum often tinged with gold coloration. Pronotum relatively long and narrow in comparison to both C. lithophilus and C. nebraskensis. Also easily distinguished from C. lithophilus and C. nebraskensis as the head is smooth whereas the other species are punctate. Pronotal margins almost always sinuate. Legs, palpi, and antennal segments 1-3 yellow-brown to orange brown; antennal segments 4-11. Elytra with sides parallel, slightly convex; stria deep but narrow, with fine, close, inconspicuous puntures; intervals flat and densely punctate; microsculpture granular but fine and shiny in appearance; punctures are however, muricate, giving the surface a rough appearance. Pronotum with more strongly curved sides than C. nebraskensis; lateral margin red-brown to black. Adapted from Bell 1960.
Life History
A teneral specimen captured in Medicine Hat, Alberta in mid-August indicates hibernation in an adult state (Bell 1960).
Conservation
Relatively common.
Diet Info
Predatory, omnivorous.
Range
Transamerican with exception of some southwestern states. Collected from the southern portion of Alberta.
Citation
Page Citation for Chlaenius pennsylvanicus
Page Citation
"Species Details - Chlaenius pennsylvanicus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6308. Accessed 28 Apr. 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 165 specimens of this Species.
UASM289611 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Michigan, Mackinac county, Naubinway
Collected ByBall, G. E.
Date Collected1956-08-11
UASM289612 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Michigan, Mackinac county, Naubinway
Collected ByBall, G. E.
Date Collected1956-08-11
UASM289616 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Michigan, Mackinac county, Saint Ignace
Collected ByBall, G. E.
Date Collected1956-08-11
UASM289647 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Florida, Manatee county, Oneco
Collected ByBall, G. E.
Date Collected1954-04-02
UASM289648 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Florida, Manatee county, Oneco
Collected ByBall, G. E.
Date Collected1954-03-31
UASM289649 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Florida, Manatee county, Oneco
Collected ByBall, G. E.
Date Collected1954-04-02
UASM289650 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Florida, Manatee county, Oneco
Collected ByBall, G. E.
Date Collected1954-03-31
UASM289651 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Florida, Manatee county, Oneco
Collected ByBall, G. E.
Date Collected1954-03-29
UASM289652 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Kansas, Stafford county
Collected ByEvans; Lin; Yoshimoto
Date Collected1953-07-07
UASM289653 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289654 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Collected ByEvans, H. E.
Date Collected1954-05-07
UASM289655 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289656 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289657 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289658 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289659 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1954-06-16
UASM289660 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1952-06-15
UASM289661 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, McLean Reserve
Date Collected1952-06-15
UASM289662 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Chautauqua county, Mayville
Collected ByBall, G. E.
Date Collected1951-07-17
UASM289664 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Wayne county, Sodus
Collected ByBall, G. E.
Date Collected1944-07-28
UASM289665 - Chlaenius pennsylvanicus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Wayne county
Collected ByBall, G. E.
Date Collected1948-05