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.

Eresus sandaliatus - Ladybird Spider

Range & Status

(syn. Ersus niger ). Recent research has shown that the Eresus species recorded from Britain is not E. niger (Petagna) but E. sandaliatus (Merrett & Murphy, 2000). Currently recorded from a single site in Dorset.

Regional Distribution

A single legendary record exists from Kynance Cove in 1932 (Bristow, 1956). Although this record is unconfirmed it has been generally accepted due to the detailed description given by the observer. This species has not been recorded in Cornwall since and may now be extinct.

Habitat & Ecology

Occurs on dry sandy heathland with patches of bare ground, in which it excavates a

small burrow which is lined with a silkentube. The retreat terminates in a small web on the surface of the ground.




Kynance Cove is part of the Lizard National Nature Reserve. Listed (long list) as a globally threatened/declining species (BSGR, 1995).


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.