Species Details
Trechus oregonensis
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
IdentificationMember of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Microsculpture on disc of prothorax more open than in chalybeus, therefore disc lacks iridescence. Prothorax more cordate than in any other species in the group, hind angles more or less denticulate. Outer elytral striae better developed, 5th complete, or nearly so. Length 3.7-4.3 mm.
Scientific Name
Trechus oregonensis
Habitat
In moderately dense, usually mixed forests, with pronounced, slightly moist humus layer.
Identification
Member of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Microsculpture on disc of prothorax more open than in chalybeus,…
Member of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Microsculpture on disc of prothorax more open than in chalybeus, therefore disc lacks iridescence. Prothorax more cordate than in any other species in the group, hind angles more or less denticulate. Outer elytral striae better developed, 5th complete, or nearly so. Length 3.7-4.3 mm.
Life History
No information available.
Conservation
Common.
Diet Info
Both larvae and adults are predatory.
Range
This species is found in northwestern United States and western Canada. In Alberta, this species was recorded by Lindroth only from the south west corner. The Strickland Museum currently does not have any specimens…
This species is found in northwestern United States and western Canada. In Alberta, this species was recorded by Lindroth only from the south west corner. The Strickland Museum currently does not have any specimens from Alberta.
Citation
Page Citation for Trechus oregonensis
Page Citation
"Species Details - Trechus oregonensis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2564. Accessed 24 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
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 3 specimens of this Species.
UASM39958 - Trechus oregonensis
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Pasayten River
Collected ByBall, G. E.
Date Collected1956-05-26
UASM198216 - Trechus oregonensis
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Pasayten River
Collected ByBall, G. E.
Date Collected1958-05-26
UASM198217 - Trechus oregonensis
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: British Columbia, Pasayten River
Collected ByBall, G. E.
Date Collected1958-05-26