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.

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.

A medium-sized red and black species, amongst the largest in its genus in Britain.This species, along with Arachnospila minutula, belongs to the subgenus Anoplochares, characterised by the female lacking a tarsal comb.The male has a characteristic genital plate.

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

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

Identification keys and general biology of this species, (also known as C. pallipes Lepeletier, 1805), are given in Morgan (1984) and Falk (1991).

A small, black solitary wasp. Identification keys are given in Lomholt (1984), Richards (1980) and Yeo & Corbet (1995).

A small, stem nesting solitary wasp. Identification keys are given in Lomholdt (1984) (as R. nigrinum), Richards (1980) and Yeo & Corbet (1995).

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.