Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from 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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


Genus Omus - Night-stalking Tiger Beetles

tiger beetle in B.C - Omus dejeanii - male Beetle - Omus dejeanii - male dejeanii? - Omus dejeanii Black Tiger Beetle 1 - Omus dejeanii Omus - male Omus dejeanii  - Omus dejeanii Night stalking tiger beetle - Omus One of my favorite Carabids - Omus dejeanii - male
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.