A very local wasp, confined to southern England and west Wales, with a similar distribution to O. argentatus. There are no records of it from Ireland or the Channel Islands, although it does occur on the Isle of Man.
Status (in Britain only)
The species is provisionally listed as Rare (pRDB3) in Falk (1991). Recent evidence suggests that it may only be scarce.
End of June to late August.
Diptera from the families Muscidae, Sarcophagidae and Tachinidae.
Little appears to be known of its nesting behaviour, but it is likely to be broadly similar to O. uniglumis. In Fennoscandia, nests are provisioned with adult Diptera; each cell containing four to six flies (Lomholdt, 1976).
Year profile last updated
Proofed: March 2012