Omophron robustum

Omophron robustum, the robust round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America^{[1][2][3][4][5]} (Alberta, Ontario, Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Nebraska, Ohio, Oklahoma, South Dakota, Wisconsin), where it inhabits the beaches of lakes, rivers and brooks.

Omophron robustum
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Adephaga
Family:	Carabidae
Genus:	Omophron
Species:	O. robustum
Binomial name
Omophron robustum G. Horn, 1870
Synonyms
Omophron decoloratum Fall, 1920 Omophron brevipenne Casey, 1909

Adults are gregarious and nocturnal. During the day, they hide in burrows in the ground or under debris.^[6]