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Species Details
Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults of this species have been collected in June and July.
IdentificationBlack or dark piceous, all appendages more or less paler, piceous to brown, but femora almost constantly darkened and legs never bright rufous. Prothorax more cordate than in lecontei, with sides more sinuate before hind angles; lateral reflection narrower but with pronounced raised bead. Anterior transverse impression entirely impunctate, not completely diappeared at middle, laterally barely suggest, as in lecontei. Elytral microsculpture isodiametric, or nearly so. Length 8.3-11.5 mm.
Scientific Name
Patrobus fossifrons
Habitat
Similar to lecontei and near water, often on sterile mud, soil or gravel.
Seasonality
Adults of this species have been collected in June and July.
Identification
Black or dark piceous, all appendages more or less paler, piceous to brown, but femora almost constantly darkened and legs never bright rufous. Prothorax more cordate than in lecontei, with sides more sinuate before…
Black or dark piceous, all appendages more or less paler, piceous to brown, but femora almost constantly darkened and legs never bright rufous. Prothorax more cordate than in lecontei, with sides more sinuate before hind angles; lateral reflection narrower but with pronounced raised bead. Anterior transverse impression entirely impunctate, not completely diappeared at middle, laterally barely suggest, as in lecontei. Elytral microsculpture isodiametric, or nearly so. Length 8.3-11.5 mm.
Life History
Probably overwinters in the larval stage.
Conservation
Relatively common.
Diet Info
Both larvae and adults are predatory.
Range
This species is found in western United States and western Canada. In Alberta this species is known only from the extreme south.
Citation
Page Citation for Patrobus fossifrons
Page Citation
"Species Details - Patrobus fossifrons, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2571/9-557895. Accessed 30 Apr. 2025.
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
Lindroth, Carl H.
Title
The Ground-beetles of Canada and Alaska. Part 2.
Publication Date
1961
Series Title
Opuscula Entomologica
Volume
20
Pages
1-200
Specimen Information
There are 353 specimens of this Species.
UASM239169 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239170 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239171 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239172 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239173 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239174 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Idaho, Butte county, Arco
Collected ByBall, G. E.; Madge, R. B.
Date Collected1960-07-30
UASM239175 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM239176 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Montana, Beaverhead county, Big Hole River
Collected ByBall, G. E.; Whitehead, D. R.
Date Collected1966-09-04
UASM354767 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Washington, Lincoln county, Wilbur
Collected ByCarr, F. S.
Date Collected1928-07-22
UASM354768 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1920-05-22
UASM354769 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1919-06-18
UASM354770 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1920-06-15
UASM354771 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1920-06-15
UASM354772 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1922-07-27
UASM354773 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1918-05-21
UASM354774 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Crowsnest Lake
Collected ByCarr, F. S.
Date Collected1930-07-13
UASM354775 - Patrobus fossifrons
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Vancouver Island, Victoria
Date Collected1901-06