Amaurobiidae  Thorell, 1869 / Amaurobius  C. L. Koch, 1837   38 species

Amaurobius ruffoi  Thaler, 1990


Prosoma yellowish brown, with faint striae. Prosoma length: 2.8 mm. Opisthosoma: light grey-yellow, dorsally with square, black spot in anterior part, which continues in a dark longitudinal stripe posteriorly. Chelicerae red-brown to dark brown. Sternum yellow-brown. Legs yellowish, with fain annulations on tibiae and ventral side of femora. Tibial apophysis with broad lateral process, median process short and broad.

Body length male: 5.4-7.0 mm

Prosoma length: 3.2 mm. Colouration as in males. Epigyne with lateral parts, reaching beyond median part posteriorly.

Body length female: 6.0-8.6 mm
Additional information

in litter layer of mixed beech forests, only in Vincentine Alps, 800-1700 m

  No data
Global distribution (WSC 2024): Italy
Distribution List

"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.

Italy   (Pantini & Isaia, 2019) |||

Pantini P, Isaia M (2019) the online catalog of Italian spiders, with addenda on other arachnid orders occurring in Italy (Arachnida: Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Scorpiones, Solifugae). Fragmenta Entomologica 51: 127-152 pdf

Pesarini C (1991) The Amaurobiidae of Northern Italy (Araneae). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 131: 261-276 pdf

Thaler K (1990b) Amaurobius ruffoi n.sp., eine weitere Reliktart der Südalpen ? mit Bemerkungen über die Amaurobiidae der Alpen (Arachnida: Aranei). Zoologischer Anzeiger 225: 241-252 pdf

WSC (2024) World Spider Catalog. Version 25.0. Natural History Museum Bern, online at (22.01.2024) doi: 10.24436/2 pdf