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Species Tasgius winkleri

Black Rove Beetle - Tasgius winkleri Rove Beetle IMG_1465 - Tasgius winkleri Large Rove Beetle - Tasgius winkleri Tasgius sp. - Tasgius winkleri Tasgius winkleri Large Rove Beetle - T. winkleri - Tasgius winkleri Rove beetle - Tasgius sp.? - Tasgius winkleri Rove beetle sifted from rotted manure - Tasgius winkleri
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Staphyliniformia)
Superfamily Staphylinoidea
Family Staphylinidae (Rove Beetles)
Subfamily Staphylininae
Tribe Staphylinini
Subtribe Staphylinina
Genus Tasgius
Species winkleri (Tasgius winkleri)
Explanation of Names
Tasgius winkleri (Bernhauer 1906)
Identification
General characteristics like T. melanarius, punctures on forebody usually denser (variable to some extent).
Pronotum widest at anteriour third [at anteriour 1/5 in T. melanarius]
Safe discrimination by male genitalia.

Not in the books, but useful to discriminate vs. T. melanarius, if seen:
Tip of mandibles sharp in dorsal, but bluntly rounded in frontal view, shaped like breakfast knife.
(caution: make sure edge of mandible is not worn off)
this well seen here, pic. 6
Range
native to Europe, adventive in NA, established in ne. US (NH-MI-PA) & ON(1)
Remarks
earliest NA record: NY 1938(1)
Internet References
Works Cited
1.Staphylinidae of eastern Canada and the adjacent United States. Keys to subfamilies; Staphylininae: ...
Brunke A., Newton A., Klimaszewski J., Majka C.G., Marshall S. 2011. CJAI 12: 1‒110.