Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   83 species

Xysticus tortuosus  Simon, 1932

Male palp with 2 tegular apophyses, median one hook-shaped, with short shaft and massive, and right-angled branch. Lateral apophysis small and hook-shaped. Tibial apophysis bipartite, ventral apophysis broad at base, bellied, strongly narrowed apically and cut straight or transversely. Retrolateral apophysis broad, cone-shaped in ventral view. Embolus with rectangularly bent tip. Epigyne with short median septum, slightly widened anteriorly. Lateral margin bent semicircularly. Prosoma brown to light brown with many white parts, contrast-rich with striking V-shaped pattern. Broad, cream eye band. Sternum white to cream with yellow margin, heart-shaped to longish oval. Chelicerae distally cream, proximally beige, frontally spined. Legs thick, bright, brown, dorsally slightly darker. Femur prolaterally spotted. Opisthosoma bright brown and grey colouring with fine white margin. White fir-shaped folium (can be reduced) and broad transverse bands posteriorly. Spinnerets grey-brown to light brown. Body length male: 3.5-4.1 mm
Body length female: 5.2-6.9 mm

Frequency: Rarely found

  No data
Global distribution (WSC 2019): Portugal to Austria, Morocco, Algeria

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at

Iorio E (2017) Inventaire des araignées et opilions de la Réserve Naturelle Régionale de la Pointe Saint-Gildas à Préfailles (Loire-Atlantique) (Arachnida). Invertébrés Armoricains 17: 45-61 pdf

Jantscher E (2001a) Revision der Krabbenspinnengattung Xysticus C.L. Koch, 1835 (Araneae, Thomisidae) in Zentraleuropa. Dissertation: 1-328 pdf

Pantini P, Isaia M (2018) Checklist of the Italian spiders (version June 2018). online at pdf

Pesarini C (2000) Contributo alla conoscenza della fauna araneologica italiana (Araneae). Mem Soc Entomol Ital 78: 379-393

World Spider Catalog (2019) World Spider Catalog, version 20.0. Natural History Museum Bern, online at (20.01.2019) doi: 10.24436/2

02-01-2018 Image insert