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

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

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

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).

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.

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 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).