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Taxonomy
Omophronini
Nomenclature
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Family: CarabidaeSubfamily: Omophroninae
SUMMARY
The "round sand-beetles" are a minor group of small or medium-sized beetles which inhabit edges of water bodies in sandy locations. The adults spend the day in burrows in the littoral zone and the nights running along the same area in search of food or mates, or for the purpose of oviposition. These beetles eat dead or dying arthropods; they are vagile dispersants and fly at night. Larvae inhabit burrows in the sand and are probably predatory. These beetles ooze a chemical defense (higher saturated acids; Moore, 1979) which is mildly musty; even so at least one species falls prey to Bufo americanus, the American Toad (Larochelle, 1974). The tribe is distributed throughout the Holarctic and Ethiopian Regions and along the northern edges of both the Neotropical and Oriental regions. One species is known from the Plummers Island site.