Harpalinae is the largest subfamily of ground beetles, containing more than 19,000 species worldwide.
Harpalinae
Chlaenius purpuricollis, a member of Harpalinae in the tribe Chlaeniini.
Panagaeus fasciatus, a Harpalinae species within the tribe Pangaeini.
Pterostichus pedemontanus, another member within Harpalinae, in the tribe Pterostichini.
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 species-rich animal families. They belong to the Adephaga. Members of the family are primarily carnivorous, but some members are herbivorous or omnivorous.
Ground beetle
A crucifix ground beetle (Panagaeus cruxmajor) got Charles Darwin into trouble in 1828.
A Brachinus species typical bombardier beetle (Brachininae: Brachinini) from North Carolina
A Lophyra sp. tiger beetle from Tanzania