This species is endemic to the Madeiran Archipelago (Portugal), where it is known from Deserta Grande Island. It was rediscovered in 2008 by Silva and Teixeira (Cameron and Teixeira 2013, D. Teixeira pers. comm 2016). It is also present as a Quaternary fossil on Bugio (R. Cameron pers. comm. 2016). There are recent records of living specimens of this species from two sites on Deserta Grande (D. Teixeira pers. comm. 2016), one of them found on the northwestern end and the second one on the southwestern end.
The population is decreasing. The species was rediscovered in 2008, on both known subpopulations (D. Teixeira pers. comm. 2016). There have been also large fluctuations in monitored subpopulations over the last ten years.