Ancistrocerus quadratus (Panzer, 1799)

Synonyms

Ancistrocerus claripennis (Thomson, 1874)

Description and notes

Spooner (1973) introduced this species to the British list giving characters to separate it from Ancistrocerus parietum (Linnaeus) and A. gazella (Panzer). Identification keys and general biology are given in Nielsen (1932), Spradbery (1973), Felton (unpublished), Richards (1980) and Yeo & Corbet (1995).

  Pre 1980   1980-99   2000 and later

The following datasets are included:

  • Bees, Wasps and Ants Recording Society - Bees, Wasps and Ants Recording Society - Trial Dataset

Distribution

Recorded from four 10 km squares in Devon (1958-69), one 10 km square in Herefordshire (pre-1859), two 10 km squares in Leicestershire and one 10 km square in Nottinghamshire (1905-44).

Overseas, found in many parts of Europe (Norway, Sweden, Finland, Denmark, The Netherlands, France, Germany, Switzerland, Italy, Poland, Austria, Albania, Ukraine, Bulgaria).

Status (in Britain only)

Listed as Rare (RDB3) in Shirt (1987) and Falk (1991). However, with no post-1970 records its status should be reviewed.

Habitat

Unknown, but probably found in a wide variety of habitats including sandy and clay soils, river banks, coastal areas and open urban, parkland and wooded areas.

Flight period

Probably univoltine; from the few records available, adults have been found from May until September.

Prey collected

Lepidoptera larvae.

Nesting biology

A tube-dweller. Nests have been found in an old razor case, the folds in a piece of paper, the bore of a flute and on a shelf behind some books.

Flowers visited

Species of angelica and probably sea-holly, bramble, hogweed and thistles.

Parasites

Probably Chrysis species as in other species of Ancistrocerus.

Author of profile

M E Archer.

Year profile last updated

1998