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Genus Bembidion

carabid - Bembidion versicolor Tiny carabid - Bembidion Ground Beetle - Bembidion salebratum Bembidion cheyennense Casey - Bembidion cheyennense - female Bembidion confusum Bembidion obscurellum Belden-J.2021.100 - Bembidion Bembidion zephyrum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Carabidae (Ground Beetles)
Subfamily Trechinae
Tribe Bembidiini
Subtribe Bembidiina
Genus Bembidion
Synonyms and other taxonomic changes
Amerizus is now treated as a separate genus(1)
Within Bembidion, there are three major clades: the Bembidion, Odontium, and Ocydromus series(2)
Explanation of Names
Bembidion Latreille 1802
Numbers
~275 spp. in our area(3) (incl. 8 adventive) arranged in 37 subgenera and species-groups, >1400 spp.(4) in >100 subgenera & species-groups worldwide(1)
Subgenera not yet in the Guide, per(1):
Actedium (B. lachnophoroides) Whitefox River drainage (SK‒AB)
Lindrochthus (B. wickhami) OR‒CA dorsal habitus
Size
2‒8 mm
Range
Worldwide; ¾ of the spp. in the Northern Hemisphere(1)
Habitat
Prefer open, wet habitats. Highest diversity on river banks.
Remarks
Adults of most spp. are active in daylight(5)
Internet References
Genus page on ToL
Works Cited
1.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.
2.Phylogeny of Bembidion and related ground beetles (Coleoptera: Carabidae: Trechinae: Bembidiini: Bembidiina)
Maddison D.R. 2012. Mol. Phylogenet. Evol. 63: 533‒576.
3.Re-collected after 55 years: a new species of Bembidion (Coleoptera, Carabidae) from California
Maddison D.R., Sproul J.S., Will K. 2023. ZooKeys 1156: 87–106.
4.BioLib.cz
5.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.