Arachnospila consobrina (Dahlbom,1843)

Description and notes

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.


A very local species in Britain, restricted to coastal dunes in England and Wales. Its distribution indicates that it is probably on the edge of its range.

Overseas it occurs in northern and central Europe (Wolf 1972), also Africa and Asia (Day 1988).

Status (in Britain only)

Listed as RDB3 (Rare) in Shirt (1987) and by Falk (1991).


Day, 1988 is the standard work for identifying British Pompilidae. Wiśniowski, B., 2009 is also useful.


A species of sandy areas, it belongs to a subgenus (Ammosphex Wilcke) which has the fore tarsus modified for digging in loose sand.

Flight period

Single brooded, occurring in July and August.

Prey collected

Virtually nothing is known about the biology of this species. Fahringer (1922) reported a female with a Segestria florentina (Rossi) (Segestriidae) under a stone near Constantinople.

Nesting biology

Not known.

Flowers visited

None recorded. 

Author of profile

G A Collins.