Identification keys and general biology are given in Danks (1971), Spradbery (1973), Richards (1980) Yeo & Corbet (1995) and Archer (2000).
A small, black wasp superficially resembling Lindenius species, but with pronounced hairy eyes.
Despite this being a widespread species, there is little published on its ecology and ethology.
The rarest of our four Nysson species, with British populations seemingly using a different host to those in Fennoscandia. It is similarly threatened in Germany.
A species of Nysson that apparently has two hosts in this country and is sometimes easier to locate than its hosts.
Previously known as Pseudepipona tomentosus (Thomson, 1870). Identification keys and general biology are given in Spradbery (1973), Richards (1980), Yeo & Corbet (1995) and Archer (2000).