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Species Teretrius obliquulus

Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus Teretrius sp.? - Teretrius obliquulus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Staphyliniformia)
Superfamily Hydrophiloidea
Family Histeridae (Clown Beetles)
Subfamily Abraeinae
Tribe Teretriini
Genus Teretrius
Species obliquulus (Teretrius obliquulus)
Synonyms and other taxonomic changes
Teretrius obliquulus J. L. LeConte, 1857
Teretrius (Neotepetrius) obliquulus J. L. LeConte, 1857
Identification
The longer mesosternum with 5-6 punctures along midline (vs. 2-3 in orbus) separates this species. Teretrius obliquulus also tends to be a bit larger and longer, also being a bit more finely punctate dorsally, but they are both in the same subgenus and are fairly similar otherwise.
… William B. Warner, 15 September, 2019