Body length 8mm. A small, slender, black wasp with some white on the face. There are two other similar species in this genus and it is thought the one in the photographs is probably T. attenuatum.
A wide variety of habitats are used where the adults search for small insects to stock their breeding chambers with. They look for hollow stems in brambles or similar sized cavities in plant stems to make their nest chambers in.
Status and distribution
Fairly common and widespread in southern Britain. Uncommon north of Yorkshire. Fairly common in Nottinghamshire and recorded once at Netherfield Lagoons.
Best time to see
May to September.