mesosoma with broad concavity

The dorsum of mesosoma with a deep and broad concavity separating the mesonotum fro the propodeum. The concavity is formed by the strongly convex mesonotum and propodeum, and is more pronounced than an indentation. Used in Antweb to separate Dolichoderus from other dolichoderine and formicine genera. Species in the Ochetellus glaber group approach this character state.