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Tribe Trechini

Ameroduvalius jeanneli Valentine - Ameroduvalius jeanneli Small ground beetle - Trechus obtusus Trechus chalybeus Trechus chalybeus Small red carabid - Trechus obtusus Very Tiny Ground Beetle - Trechus Trechus quadristriatus Trechus barberi - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Trechinae
Tribe Trechini
Numbers
ca. 300 spp. in 9 genera in our area (all in the subtribe Trechina), ~2650 spp. in >170 genera of 2 subtribes worldwide(1)(2)
Size
typically 2-7 mm(1)
Identification
monotonous in color and form; eyes very often small or lacking(1)
Works Cited
1.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.
2.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.