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Genus Omus - Night-stalking Tiger Beetles

Omus californicus - female Omus cazieri van den Berghe, 1994 [Paratype] - Omus cazieri - female Beetle - Omus dejeanii Omus c. californicus - Omus californicus WSU-4 - Omus dejeanii - male The Night-Stalker - Omus audouini - male Night-stalking tiger beetle with prey - Omus dejeanii Omus sp? - Omus californicus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Carabidae (Ground Beetles)
Subfamily Cicindelinae (Tiger Beetles)
Tribe Amblycheilini (Blunt-lipped Tiger Beetles)
Genus Omus (Night-stalking Tiger Beetles)
Explanation of Names
Omus Eschscholtz 1829
Probably from Greek ωμος 'fierce, cruel'
Numbers
5‒15 spp. recognized by various workers, and varying numbers of ill-defined 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
Size
12‒21 mm(1)
Identification
Mandibular scrobe without setae. Inflexed part of elytron impunctate. Male sternum 7 with posterior margin deeply emarginate.
Range
w. NA (so.BC‒CA)(1)(2)
Habitat
Usually transition zone between forests and meadows; found during the day under leaf litter or in/under fallen tree trunks. Under cover in fields and open forests during the day.(2)
Life Cycle
in most species, at least 3 years(1)
Remarks
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.