Anoplius concinnus is a widespread Eurasian species of spider wasp.

This species can be found throughout Europe as far west as Great Britain, North Africa and the Middle East and eastwards to Mongolia.

In Britain it is found as far north as the Moray Firth[2] Adult wasps run on wet stones exposed in gravel stream beds, flying between them and the stream banks, and can also be found at the margins of pools formed in sand and gravel pits.

In sand pit pools, females prey on spiders that run over the surface of the very shallow water near the edges.

Females excavate multiple cells beneath stones which are stocked with spiders.