Ground beetles are a large, cosmopolitan family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. As of 2015, it is one of the 10 most speciose animal families.
Calathus is a genus of ground beetle native to the Palearctic, the Near East and North Africa. There are at least 190 described species in Calathus.
Omophron is a genus of ground beetle (Carabidae), the only extant genus in the subfamily Omophroninae. It is mostly distributed in the Northern Hemisphere with the southern border running through Guatemala and Hispaniola in Americas, South Africa and Madagascar in Africa, Malaysia and Philippines in Asia.
Hayk Mirzayans was an Iranian Armenian entomologist.
Ross Taylor Bell was an American entomologist with particular interest in the invertebrate natural history of Vermont, United States, and carabid beetles. Together with his wife, Joyce Bell, his work at the University of Vermont was largely taxonomic, where they described more than 75% of the rhysodine species known to science. Ross also wrote a number of seminal papers in his chosen field.
Omophron nitidum, the shiny round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Omophron solidum, the solid round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Omophron gilae, the Gila River round sand beetle, is a species of ground beetle in the family Carabidae. It is found in Central America and North America.
Omophron obliteratum, the effaced round sand beetle, is a species of ground beetle in the family Carabidae. It is found in Central America and North America.
Omophron americanum, the American round sand beetle, is a species of ground beetle in the family Carabidae. It is found in, as well as native to, North America, ranging across most of the United States and Canada, except British Columbia.
Omophron robustum, the robust round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Omophron dentatum, the toothed round sand beetle, is a species of ground beetle in the family Carabidae. It is found in Central America and North America.
Omophron grossum, the large round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Omophron tessellatum, the mosaic round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Omophron labiatum, the large-lipped round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America.
Mecodema atrox is a medium-sized ground beetle species that is closely related to Mecodema curvidens. Mecodema atrox is relatively rare in comparison due to its preferred habitat, the coastal broadleaf forests of the Coromandel Peninsula, a forest type that is in decline. The body of Mecodema atrox is black and the legs are dark reddish-brown. They can be distinguished from other Mecodema species by a number of characters, including the pattern of asetose punctures along the elytral striae.
Omophron aequale is a species of ground beetle in the family Carabidae. It is distributed in East Asia.
Omophron axillare is a species of ground beetle in the family Carabidae.
Omophron chelys is a species of ground beetle in the family Carabidae. It is distributed in northeastern India, in the state of Sikkim.
