It is clear from the literature that this is an extremely elusive species, and it is possible that rearing the wasp from host webs might be a more effective way of recording it than searching for adults. The life history has been studied on the Continent (Richards & Hamm, 1939; Day, 1988). Here, the wasp attacks females of the spider Cheiracanthium erraticum (Clubionidae) within their characteristic webs, which are usually constructed in rolled-up leaves or flower heads of grasses. The wasp does not produce a nest of its own and has a morphology which allows it to squeeze through the host's web. Parasitised spiders do not appear to lay eggs but are quite active and will react to disturbance. The spider dies about 11 days after the pompilid larva hatches, by which time it has been sucked dry. In France, Maneval (1936) reports finding early stages of Homonotus in four-fifths of C. erraticum webs, despite seeing only one adult.