Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   81 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
  No data
Global distribution (WSC 2022): Portugal to Austria, Morocco, Algeria
Distribution List
Austria   (no references) ||| France   (no references) ||| Italy / Sicily   (Pantini & Isaia, 2019) ||| Portugal   (Branco et al., 2019) ||| Russia, Eastern   (Mikhailov, 2013) ||| Spain   (Branco et al., 2019) |||

Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254 pdf

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, Univ. Graz, 328 pp., 81 pls. pdf

Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262 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

Pesarini C (2000) Contributo alla conoscenza della fauna araneologica italiana (Araneae). Memorie della Società Entomologica Italiana 78: 379-393 pdf

Urones C (2021) Registros nuevos de arañas (Araneae) de la provincia de Ourense (Galicia, España). Revista Ibérica de Aracnología 39: 55-66 pdf

WSC (2022) World Spider Catalog. Version 23.0. Natural History Museum Bern, online at (21.01.2022) doi: 10.24436/2 pdf

11-01-2022 Image insert
25-09-2021 Distribution update Detail
02-01-2018 Image insert