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Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

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TaxonomyBrowse
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Subgenus Trechus

Trechus chalybeus Dejean - Trechus obtusus Small beetle - Trechus obtusus Trechus chalybeus Ground Beetle - Trechus obtusus - male Trechus chalybeus Carabidae - Trechus Bembidion? - Trechus Trechus quadristriatus
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
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.