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Subgenus Trechus

Small Brown Beetle - Trechus Trechus obtusus Erichson - Trechus obtusus Trechus chalybeus Trechus crassiscapus - Trechus apicalis Ground Beetle (subgenus Trechus) - Trechus Trechus apicalis - male Trechus schwarzi saludae - Trechus schwarzi - male Trechus cf. apicalis - Trechus apicalis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Carabidae (Ground Beetles)
Subfamily Trechinae
Supertribe Trechitae
Tribe Trechini
Genus Trechus
No Taxon Subgenus Trechus
Numbers
23 spp. (of which 3 adventive) in our area, almost 800 spp. worldwide; our spp. are arranged into 5 species-groups of which two are non-native(1)
Range
much of the world but 94% of spp. are Palaearctic; in our area, half of native spp. are eastern (mostly Appalachian) and half, western; 4 range into Canada in the west and one in the east(1)
Works Cited
1.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.