Robertus alpinus Dresco, 1959
Description
Male
Unknown.
Female
Vulva: coiled ducts with 4 turns. Prosoma 1.6 mm long. Prosoma pigmented, eyes ringed with black. Eyes: AME slightly more than one diameter apart from ALE, PME one diameter apart, 1.5 diameters from PLE, AME one diameter from PME. Chelicerae with one tooth on posterior margin and 3 teeth on anterior margin. Leg colouration as prosoma.
Additional information
Only one female known. In mountain, at the base of a glacier. Altitude 2200 m.
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Vulva
(Dresco 1959a)
Eyes, frontal view
(Dresco 1959a)
Chelicera, frontal view
(Dresco 1959a)
Distribution List
References
Dresco E (1959a) Sur quelques espèces du genre Robertus (Araneae, Theridiidae). Description de R. alpinus et R. cardesensis spp. nov. Bulletin du Muséum National d'Histoire Naturelle de Paris 31: 242-247 
Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2
Updates
| 24-06-2014 | Image insert |