Auplopus carbonarius

A small, dark species.

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

The wasp tends to inhabit woodland, especially that with streams and marshy areas which provide wet mud and clay for nesting materials.

Apparently single-brooded; May to September.

Prey most frequently consists of spiders in the family Clubionidae. The nests are built in cavities in a great variety of situations.

A generally scarce species although perhaps especially prone to under-recording through its secretive and elusive nature. It is essentially a southern species. 

Status in Leicestershire and Rutland not known.