IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group


BackArctosa maderana Roewer, 1960

Arctosa maderana Roewer, 1960

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Family: Lycosidae
DD Data Deficient
IUCN Red List Status:

Countries of Occurrence:
Portugal - Madeira


Luis Crespo
Mario Boieiro
Paulo A.V. Borges
Pedro Cardoso
Cardoso, P., Crespo, L.C., Silva, I., Borges, P. & Boieiro, M.

Henriques, S. & Russell, N.


Facilitators / Compilers/s:

Assessment Rationale:

Arctosa maderana was recorded from Madeira Island and Porto Santo (Portugal), from unspecified localities. This species is assessed as Data Deficient (DD) due to the lack of knowledge on its taxonomy, distribution, ecology and threats. More research is needed in order to assess its extinction risk.

Geographic Range:

Arctosa maderana was recorded from both Madeira Island and Porto Santo (Portugal), from unspecified localities (Roewer 1960, Schmidt 1990). This species EOO and AOO are unknown.

Portugal - Madeira
Extent of Occurrence (EOO):
Unknown (km2)
Area of Occupancy (AOO):
Unknown (km2)
Elevation Lower Limit:
Elevation Upper Limit:
Biogeographic Realms:
Endemic Madeira


The population size and trend are unknown.


Habitat and Ecology

There is poor information on species habitat, although the second record was from a sandy beach (Schmidt 1990). The species ecology is unknown. Species of the same family and genus are active epigean hunters of insects and other arthropods.

Major Threat(s):

The threats to this species are unknown.

Conservation Actions

No specific conservation measures are in place for this species and it is unknown whether it occurs in any protected area. Adults of this species have not been found since the original description (Roewer 1960) and it needs, first of all, taxonomic clarification. If valid, basic information would be needed on its distribution, ecology and possible threats.