a tiny black and yellow square-headed wasp (ectemnius maculosus) perched on a leaf.

crabroninae ectemnius maculosus hymenoptera long island york animal antenna black yellow wasp bug close entomology flying garden green insect leaf macro nature north america organic pest control parasitoid wasps pollinator predator predatory solitary squareheaded tarsii tibia united states wildlife tiny square-headed perched usa leaf