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.

Myrmedobia inconspicua - A microphysid bug

Range & Status

A western European species, widespread on the southern and eastern coasts of


Regional Distribution

Distributed widely in the Isles of Scilly and most recently from the Garrison, St. Mary' s in 1987. Otherwise known from Kynance Cove (1955) and the Logan Rock at Treen in West Penwith (1999).

Habitat & Ecology

It is a coastal species, found at the roots of Marram Ammophila arenaria and other plants on dunes, on lichen-covered boulders, and amongst grassy vegetation immediately above rocky shores. The females are flightless.


The main threats are coastal development and erosion through public pressure.

Abandonment of coastal grazing which results in outcrops becoming engulfed in scrub is also a concern.


See introductory section for the general principles of habitat management.


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.

Cornish Biodiversity Network. 2017.