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Hymenoptera diagonal.jpg
Ectemnius lapidarius
Scientific classification e
Kingdom: Animalia
Clade: Euarthropoda
Class: Insecta
Order: Hymenoptera
Family: Crabronidae
Subfamily: Crabroninae
Tribe: Crabronini

Wasps of the tribe Crabronini are mostly small to very small wasps. Typical of this tribe are the forewings with a single submarginal cell, the lack of membranous metanotal and propodeal modifications, and (in most genera) a square-shaped head.

Typical Crabronini prey upon flies and make simple nests, either in the ground or in rotting logs.[1]