Summary details for Halorates reprobus (O.P.-Cambridge, 1879)

Distribution

Halorates reprobus is widespread throughout coastal Britain and Ireland, but is absent inland. Globally this species is restricted to the north-western coastline of Europe where the centre of its distribution seems to be the British Isles (Decleer & Bosmans 1989).

Habitat and ecology

This spider lives exclusively in coastal habitats such as saltmarshes and rocky/muddy shores. In these habitats it conceals itself beneath rocks and tidal litter. Some specimens may be found below the high tide mark. Halorates reprobus has also been found in the nest material of cormorants (Bristowe 1958). Adults are present throughout the year (Locket & Millidge 1953).

Status

Local in its coastal habitats. Relatively few records exist for this species from continental Europe suggesting that the British populations are of international importance.

Threats

The loss of saltmarsh habitat due to sea level rise associated with global warming is likely to be the principle threat.

Management and conservation

Ensure survival of saltmarshes through managed realignment. Text based on Dawson, I.K., Harvey, P.R., Merrett, P. & Russell-Smith, A.R. (in prep.).