Thanatus firmetorum Muster & Thaler, 2003
Description
Male
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 mmFemale
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 mmAdditional information
endemic species of the Alps, in scree above timberline, 2000-3000 m a.s.l.
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Pedipalp, ventral view
(Muster & Thaler 2003)
Pedipalp, retrolateral view
(Muster & Thaler 2003)
Tip of embolus
(Muster & Thaler 2003)
Epigyne
(Muster & Thaler 2003)
Vulva, ventral view
(Muster & Thaler 2003)
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.
References
Blick T, Finch O-D, Harms K H, Kiechle J, Kielhorn K-H , Kreuels M, Malten A, Martin D, Muster C, Nährig D, Platen R, Rödel I, Scheidler M, Staudt A, Stumpf H, Tolke D (2016) Rote Liste und Gesamtartenliste der Spinnen (Arachnida: Araneae) Deutschlands. 3. Fassung, Stand April 2008, einzelne Änderungen und Nachträge bis August 2015. Naturschutz und Biologische Vielfalt 70/4: 383-510 
Hänggi A, Stäubli A (2012) Nachträge zum „Katalog der schweizerischen Spinnen“: 4. Neunachweise von 2002 bis 2011. Arachnologische Mitteilungen 44: 59-76
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
Muster C, Thaler K (2000) Das Männchen von Zelotes zellensis Grimm (Araneae: Gnaphosidae). Revue Suisse de Zoologie 107: 579-589
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
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2