Identification keys are given in Morgan (1984). General biology is given in Morgan (1984) and Falk (1991). The latter treats this species as a variety of C. ignita. However, C. ruddii is readily recognised by the small punctures on the second gastral tergite, relative to those on the first tergum, which are of uniform size and dispersion except at the rear of the tergum.

Identification keys are given in Morgan (1984). General biology is given in Morgan (1984) and Falk (1991). Compared with other species of Chrysis, this species is usually relatively large, being 10 mm or more in body length. It can be distinguished from the other large species, C. longula, in having the spurs on the middle tibiae of about equal length.

Identification keys are given in Morgan (1984). General biology is given in Morgan (1984) and Falk (1991).

Disagreement exists regarding the definition of this name. Kunz (1994) treats this species as a variety of C. ignita. Identification keys are given in Morgan (1984). General biology is given in Morgan (1984) and Falk (1991). Compared with other species of Chrysis, this species is usually relatively large, being 10 mm or more in body length. It can be distinguished from the other large species, C. pseudobrevitarsis, in having very large… Read more

A medium-sized, red and black species. It may be identified using Day (1988) and is characterised in the female by having comb-spines on the fore tarsus, those on the second segment being longer than in related species; and by the head being particularly hairy, a character best appreciated in comparative material. The genital plate of the male is relatively distinct.

This species had not been recorded in Britain at the time of Richards' (1980) RES handbook, but identification characters are given in Lomholdt (1984). It was first recorded in Britain in 1986 (Allen, 1987), although it may previously have been confused with S. solskyi.

Identification keys and general biology are given in Morgan (1984) and Falk (1991).

A medium-sized, black and red species. It may be identified using Day (1988) and is characterised in the female by having comb-spines on the fore tarsus, a coarse, granular surface to the propodeum and rather long postnotum, and in the male by the subgenital plate which has a short tuft of hairs near the apex. Females of the subgenus Ammosphex Wilcke, to which this species belongs, are amongst the taxonomically most difficult of the family in Europe. Spooner (1941) was the first to correctly associate the females with the males, and earlier published records need to be treated… Read more