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Species Brachinus medius

Bombardier Beetle - Brachinus medius Bombardier Beetle - Brachinus medius
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Brachininae
Tribe Brachinini
Genus Brachinus (Bombardier Beetle)
Species medius (Brachinus medius)
Size
6-8mm (one of smallest Brachinus in North America)
Identification
Dark venter including lateral portion of metasternum. Entire metasternum may be pale in some individuals; metasternum not shortened; glabrous proepipleura & poroepisterna; antennomere #3 completely dark; antennomere #1 proportionately robust; protibia strigose.