Agonum albicrus

Description

Agonum albicrus is a species of ground beetle in the Platyninae subfamily. It was described by Pierre François Marie Auguste Dejean in 1828. It is widely distributed in eastern United States and extending into Louisiana and southern Ontario, Canada. After Dejean described it in 1828 it was studied again only century and a half later by Lindroth in 1955 and 1966 respectively. Back then it was believed that the species is endemic to Mount Vernon, Alabama but in 2008 it was discovered in New Hampshire (Rockingham County) by Ross T. Bell and then in 2009 in Kansas (Douglas County) by Robert L. Davidson. It is also found in Jackson County, Florida and Latimer County, Oklahoma as well as Ontario. Agonum is a large genus of ground beetles in the subfamily Harpalinae, tribe Platynini. They are mid-sized to smallish beetles, typically with dark metallic hues – often reddish or bronze, but sometimes black, green etc. The genus is generally native to the Holarctic and the Mediterranean region; their southern limit in Central Asia and the Himalaya region is less well understood, and they seem to range outward a bit out of their core regions (e.g. into East Africa). They are wet-loving throughout their life cycle; for example, the genus is well represented in Ireland, where they are more plentiful than anywhere else in Europe.