Assessment Rationale:

Seddon (2008) suggested the species should be assessed as Near Threatened. It meets the general criteria for listing as it has a total extent of occurrence of 10 km², however it is present over the eastern part of the island and in these sites, it is abundant. The habitats have been subject to changing land-use practice, and as such the quality of the habitat has declined over the last thirty years. There has been development of tourism on the main island, and recreational activities may impact some sites,  however as the species is abundant within its restricted range, the species is listed as Near Threatened (NT), almost meeting criteria B.

Geographic Range:

The two subspecies are both endemic to Porto Santo (Seddon 2008); one is only found subfossil (Cameron et al. 2006). The living subspecies has a total extent of occurrence of 10 km² but is present over the eastern part of the island and in these sites it is abundant.

Population:

There are no recent data on population trends, however the species is abundant within its range (Seddon 2008).

Habitat and Ecology

This species is found under stones on grassland.

Major Threat(s):

The habitat has been subject to changing land-use practice, and as such the quality of the habitat has declined over the last thirty years, although the main area falls within a designated protected area and the species is abundant within its range.

Conservation Actions

This species is widely distributed on eastern Porto Santo, so recommended conservation actions include management of the grassland areas for maintenance of this species and monitoring of the protected areas to ensure no loss of further habitat.