Philodromidae  Thorell, 1870 / Thanatus  C. L. Koch, 1837   35 species

Thanatus firmetorum  Muster & Thaler, 2003


Bulbus with small tegular apophysis. Embolus massive, tapering towards tip, with dorsal keel. Prosoma dark brown without median and lateral bands, sometimes with yellowish heart-shaped central spot. Sternum brown. Legs brown. Chelicerae yellow-brown. Opisthosoma grey, dorsally with cardiac mark. Spinnerets yellowish grey.

Body length male: 4.55-5.1 mm

Epigyne broad, central division wider than long. Colouration as in males. Legs brown, sometimes with black spots. Femur dorsally with 2 converging yellow stripes.

Body length female: 6.8-7.5 mm
Additional information

endemic species of the Alps, in scree above timberline, 2000-3000 m a.s.l.

  No data
Global distribution (WSC 2021): Switzerland, Germany, Austria, Italy
 male  female
Distribution List
Austria   (Muster & Thaler, 2003) ||| Germany   (Muster & Thaler, 2000) ||| Italy   (Pantini & Isaia, 2019) ||| Switzerland   (Hänggi & Stäubli, 2012) |||

Hänggi A, Stäubli A (2012) Nachträge zum „Katalog der schweizerischen Spinnen“: 4. Neunachweise von 2002 bis 2011. Arachnologische Mitteilungen 44: 59-76 pdf

Muster C, Thaler K (2000) Das Männchen von Zelotes zellensis Grimm (Araneae: Gnaphosidae). Revue Suisse de Zoologie 107: 579-589 pdf

Muster C, Thaler K (2003) The Thanatus striatus species group in the eastern Alps, with description of Thanatus firmetorum sp. n. (Araneae: Philodromidae). Bulletin of the British Arachnological Society 12: 376-382 pdf

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

WSC (2021) World Spider Catalog. Version 21.5. Natural History Museum Bern, online at (03.01.2021) doi: 10.24436/2 pdf

23-02-2021 Distribution update Detail