Assessment Rationale:

There is only one location known and the area of occupancy is smaller than 20 km2, and there is no information available on threats, quality of habitat, population size and trend. The species may even be extinct. For this reason, this species is listed as Data Deficient (DD).

Geographic Range:

This species is endemic to the Canary islands, Island of Tenerife, where it occurs only in a very small area in the south-west of the island.
It is only known from the two type localities, namely Sta. Cruz de Tenerife and the environments of Tagueste (the second locality seems to be doubtful, as Wollaston refers it to Mousson’s 1872 “nitidiuscula” which is not identical to Shuttleworth’s 1852 propinquus, and thus may probably be another species). However, Ibanez et al. (1990) give only the Tagueste site (Bco. De la Galga) in their distribution map of that taxon. Consequently, the Sta. Cruz population may have gone extinct. If the Tagueste site is indeed doubtful (e.g. it is not the same species), the loss of the Sta. Cruz population may mean that the entire species has gone extinct.

Population:

There are no data on the population size or trend.

Habitat and Ecology

This species lives in dry temperate shrub vegetation (Piso basal).

Major Threat(s):

There are no data available.

Conservation Actions

The habitat needs to be protected, but before any action takes place, a survey of the area and the population is urgently needed to make sure that the species still exists. Research is needed to determine whether the Tagueste site  holds N. propinquus or another species.