Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.

Microdon myrmicae

Range & Status

Records widely distributed down the western side of Britain.

Regional Distribution

Recorded at Liskeard in 1904. Since 1980, found at Zennor (1989 & 2000), Redlake

Cottage Meadows (1994) and Wimalford, Upper Fowey Valley (2004 & 2006).

Habitat & Ecology

Boggy moorland areas and wet heath and grassland. The larvae develop in the nests of Myrmica ants, notably M. scabrinodis . The adults fly from May to July.


Drainage of wetland sites.


Redlake Cottage Meadows is a Cornwall Wildlife Trust Reserve.


I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.

The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.