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.

Acropsilus niger

Range & Status

Only known from old records in Cornwall and a 1990 record from Hampshire.

Regional Distribution

Recorded near Padstow (1902) and St. Merryn (1905).The latter was said to be a marshy hollow near a common, but this is now destroyed.

Habitat & Ecology

Ecology not known, but likely to be aquatic or a seepage specialist.


Drainage improvement works, water abstraction, and development.


None possible until a new site is discovered.


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.