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Genus Omus - Night-stalking Tiger Beetles

Dejean's Flightless Tiger Beetle - Omus dejeanii Omus californicus On the beach - Omus dejeanii - male - female Guessing this is another Omus dejeanii - Omus dejeanii Omus - male Beetle - Omus dejeanii Omus sp - Omus californicus Omus dejeanii - male - female
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 Cicindelinae (Tiger Beetles)
Tribe Amblycheilini (Blunt-lipped Tiger Beetles)
Genus Omus (Night-stalking Tiger Beetles)
Synonyms and other taxonomic changes
Genus is currently under study
Explanation of Names
Omus Eschscholtz 1829
Probably from Greek omos (ωμος) 'fierce, cruel'
5-15 spp. recognized by various workers, and varying numbers of indistinct subspecies(1); just 5 spp. treated in(1)
Species in BG:
O. audouini Reiche
O. cazieri van den Berghe
O. dejeanii Reiche
O. laevis LeConte
12-21 mm(1)
Less than 20 mm in length. Mandibular scrobe without setae. Inflexed part of elytron impunctate. Male sternum 7 with posterior margin deeply emarginate.
Western North America (so.BC-CA)(1)(2)
Usually found in the transition zone between forests and meadows. During the day these beetles are found under leaf litter and in or under fallen tree trunks.
Under cover in fields and open forests during the day.(2)
Life Cycle
Life cycle of most species apparently 3 or more years(1)
flightless; primarily nocturnal (occasionally active on overcast days)(1)
Works Cited
1.A field guide to the tiger beetles of the United States and Canada: identification, natural history, and distribution... 2nd Ed.
Pearson D.L., Knisley C.B., Duran D.P., Kazilek C.J. 2015. Oxford University Press. 328 pp.
2.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.