Assessment Rationale:

Tenuiphantes tenebricoloides is one of the most common spider species in Madeira Island (Portugal), known throughout the laurisilva forest and also other habitats including planted/cultivated forest and close to urban areas. It is therefore assessed as of Least Concern (LC).

Geographic Range:

Tenuiphantes tenebricoloides is one of the most common spider species in Madeira Island (Portugal), known throughout the laurisilva forest and also other habitats including planted/cultivated forest and close to urban areas. Multiple collection sites are recorded for the species, mostly recent and in laurisilva forest (Schenkel 1938, Denis 1962, Wunderlich 1987, unpublished). It was possible to perform species distribution modelling to predict its potential range with confidence limits (Cardoso et al. 2017). The extent of occurrence (EOO) is estimated to be between 181-700 km² and the area of occupancy (AOO) to be between 160-692 km².

Population:

No population size estimates exist, but the population is assumed to be stable, since the species is able to live on a variety of habitats.

Habitat and Ecology

Although most common in laurisilva forest, the species seems to be able to live on several habitat types such as cultivated forest, even close to human settlements. Tenuiphantes tenebricoloides is a sheet-web builder at the arboreal layer feeding mainly on small insects.

Major Threat(s):

There are no known threats to this species.

Conservation Actions

No specific conservation measures are in place for this species, but most of the species range is inside the Madeira Natural Park. Monitoring of population trends should be conducted to confirm species status.