Uniquely among the British group it constructs a nest of barrel-shaped cells in which spiders are stored and the larvae develop.

[4] The flight period in Great Britain is June to August, during which the females construct a nest of barrel-shaped cells in which spiders are stored and the larvae develop.

There can be as many as ten cells in a nest and the prey often has its legs amputated to make it easier to carry either by flight or more often by crawling along the ground.

[6] The most frequent prey consists of spiders in the family Clubionidae, but they have also been recorded taking Gnaphosidae, Salticidae, Agelenidae, Thomisidae, Lycosidae, Segestriidae and Anyphaenidae.

[6] Woodland, especially that with water courses and marshy areas which provide wet mud and clay for building nests.