Summary for Silometopus incurvatus (Araneae)
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About this speciesRecorded altitude range
0m to 20m
The species is apparently restricted to sand dunes in the northern half of Britain, on the coast of North Yorkshire, Northumberland, East Lothian, Aberdeenshire, Moray, Ayrshire and Islay. In Europe it has been recorded from Belgium, the Netherlands, Germany and Scandinavia.
Habitat and ecology
S. incurvatus occurs on sand dunes, in marram litter 8 - 20 cm above ground level, and in sea buckthorn litter. Adults have been found between February and June.
UK Biodiversity Action Plan priority species. Although the spider is numerous at some sites, it has shown an apparently significant major decline in the past 30 years and is only recorded from five 10-km squares post-1992. Area of occupancy has declined from 17 hectads before 1992 to 5 since that date.
Possibly public pressure in some of the more southern sites.
Management and conservation
Control erosion and maintain healthy growth of marram on sand dunes.
Text based on Dawson, I.K., Harvey, P.R., Merrett, P. & Russell-Smith, A.R. (in prep.). References
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