Crossocerus varus Lepeletier & Brullé,1835

Synonyms

Crabro intricatus (SMITH,1856); Crabro lepeleteri (SMITH, 1856); Crossocerus pusillus LEPELETIER & BRULLÉ,1835; Crabro spinipectus (SHUCKARD,1837); Crossocerus striatulus LEPELETIER & BRULLÉ,1835; Crossocerus striatus LEPELETIER,1845; Crossocerus varius misspelling

Description and notes

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

Distribution

A common species recorded throughout much of Britain. Overseas found throughout Europe, across Asia and into northern Japan.

Status (in Britain only)

This species is not regarded as scarce or threatened.

Habitat

Found in a wide range of habitats.

Flight period

Univoltine, on the wing in mid-summer (June-August).

Prey collected

Nest burrows are stocked with a range of small Diptera from various families, e.g. Empididae, Dolichopodidae, Drosophilidae and Simuliidae (Lomholdt 1984).

Nesting biology

A ground-nesting species. The nest burrow descends 10-12 cm into the ground. Cells are constructed at the end of small side branches of the lower part of the main burrow, up to 9 cells have been found in one nest (Lomholdt 1984).

Flowers visited

None recorded.

Parasites

None recorded.

Author of profile

M N Smith.

Year profile last updated

2009