Assessment Rationale:

This species is endemic to the Island of Tenerife in the Canary Islands (Spain), where it is only known from the type locality ("prope Garachico, Tenerife"). The species has never been refound since the original description in 1852, and the assumed locality has changed significantly since the species was described, now becoming a major town. There have been surveys over the last 30 years without success (K. Groh, pers. comm. 2016) and this species is considered Critically Endangered (CR; criterion D), and Possibly Extinct.

Geographic Range:

This species is endemic to Tenerife (Canary Islands, Spain), where it is only known from the locus typicus: "prope Garachico, Tenerife" (Shuttleworth 1852, Bank et al. 2002, Holyoak et al. 2011). The species has not been refound since the original description in 1852. The area has changed significantly since the species was described, now becoming a major town. There have been surveys over the last 30 years without success (K. Groh pers. comm. 2016).

Population:

The species is only known from the locus typicus and has not been refound since it was described in 1852. It is probably extinct. It is only known from the holotype, which is considered very distinctive.

Habitat and Ecology

The type material was collected below rocks and wood in the vegetation zone Piso-Basal (sparse coastal scrub vegetation).

Major Threat(s):

A significant past threat was the expansion of the urban area at the known locality.

Conservation Actions

Further research should be carried out to confirm whether or not the species is extinct.