''Agonum placidum'' is a species of black coloured

ground beetle Ground beetles are a large, cosmopolitan distribution, cosmopolitan family (biology), 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 ...

in the

Platyninae Platyninae is a subfamily of ground beetles (family Carabidae). Genera The subfamily Platyninae contains about 250 genera organized into three tribes: ; Tribe Omphreini Ganglbauer, 1891 : '' Omphreus'' Dejean, 1828 ; Tribe Platynini Bonelli, ...

subfamily that can be found in woodlands, thickets, and open fields of southern Canada and northeastern United States.

References

External links

''Agonum placidum'' on Bug Guide''Agonum placidum'' on Encyclopedia of Life
Beetles described in 1823 placidum Beetles of North America {{Platyninae-stub