About Omophron americanum Dejean, 1831
Omophron americanum, commonly known as the American round sand beetle, is a species of ground beetle belonging to the family Carabidae. It is native to and found in North America, where it ranges across most of the United States and Canada, with the exception of British Columbia. This beetle has a broad, rather flat body shape, and measures between 5.1 and 7.0 mm in length. Its body is reddish-yellow with dark markings, and the colour pattern on its upper surface is variable; its underside is darker and brown. It has a striated elytron, a V-shaped pale area on the frons, a punctuated metasternum, and two setae on the mesocoxa. Its habitat is the immediate vicinity of usually standing waters, growing on bare or sparsely vegetated sandy or clay substrates. It occurs at altitudes ranging from 260 to 2,200 m. Copulation in this species takes place between April and May. Females are typically gravid (pregnant) between May and June. Omophron americanum moults and becomes teneral between July and September, and overwinters in the adult stage. This species of beetle is gregarious, and its individuals are also capable of stridulation.
