Segestriidae  Simon, 1893 / Ariadna  Audouin, 1826   9 species

Ariadna insidiatrix  Audouin, 1826


Prosoma light brown, with a very thin darker borderline. Prosoma 2.6-3.6 mm long. Sternum light brown, darker on the edges. Eyes nearly equal in size. Clypeus a little wider than eye diameter. Legs uniform light brown, tibia I, II and III with very numerous spines, number greater than 16, but variable, tibia IV without spines or with one small spine, femur I with 3 dorsal and 2 lateral spines, femur II with 4 dorsal and 4 lateral spines, metatarsus I with 4 spines and a lateral apophysis in the middle. Opisthosoma long oval, grey, spinnerets lighter.


Palp short and strong, brownish, with tibia and tarsus black. Prosoma and sternum dark brown. Legs brown, the anteriors darker, tibia I, metatarsus I and II, tarsus I and II almost black, tibia I and II ventrally with 5 pairs of unequal long spines, metatarsus I and II ventrally with 6-7 pairs of unequal long spines. Opisthosoma long and cylindrical, grey brown, dorsally darker and purplish.

Body length female: 6-11 mm
Additional information

Littoral: cliffs and rocks, under stones.

  No data
Distribution comment: Record from Malta may be an undescribed species (Pfliegler et al., 2017)
Global distribution (WSC 2020): Mediterranean
 male  female
Distribution List
Algeria   (Bosmans, unpubl.) ||| Egypt   (Bosmans, unpubl.) ||| France   (no references) ||| France / Corsica   (no references) ||| Greece   (no references) ||| Greece / Crete   (no references) ||| Libya   (Bosmans, unpubl.) ||| Morocco   (Bosmans, unpubl.) ||| Portugal   (Branco et al., 2019) ||| Spain   (Branco et al., 2019) ||| Spain / Balearic Islands   (Branco et al., 2019) ||| Tunisia   (Bosmans, unpubl.) ||| Turkey (Asia)   (Danışman et al., 2019) ||| Turkey (Europe)   (Danışman et al., 2019) |||

Bosmans R. (unpubl.) Provisional list of spiders of North Africa. Database excerpt Aug. 2019

Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). [N.B.: few records from this paper are not taken over and not commented] Zootaxa 4614: 201-254 pdf

Brignoli P M (1976c) Ragni d'Italia XXIV. Note sulla morfologia dei genitali interni dei Segestriidae e cenni sulle specie italiane (Araneae). Fragmenta Entomologica 12: 19-62 pdf

Danışman T, Kunt K B, Özkütük R S (2019) The checklist of the spiders of Turkey. Version 2019 [last updated 1 June 2019], online at pdf

Kunt K B, Kaya R S, Özkütük R S, Danişman T, Yağmur E A, Elverici M (2012) Additional notes on the spider fauna of Turkey (Araneae). Turkish Journal of Zoology 36: 637-651 pdf

Le Peru B (2011) The spiders of Europe, a synthesis of data: Volume 1 Atypidae to Theridiidae. Mémoires de la Société Linnéenne de Lyon 2: 1-522 pdf

Pantini P, Sassu A, Serra G (2013) Catalogue of the spiders (Arachnida Araneae) of Sardinia. Biodiversity Journal 4: 3-104 pdf

Pfliegler W A, Schönhofer A, Niedbała W, Vella P, Sciberras A, Vella A (2017) New records of mites (Acari) and harvestmen (Opiliones) from Malta with a preliminary checklist of Maltese Arachnida. Soil Organisms 89: 85-110 pdf

World Spider Catalog (2020) World Spider Catalog. Version 21.0. Natural History Museum Bern, online at (20.03.2020) doi: 10.24436/2 pdf

05-09-2017 Distribution update Detail
25-06-2013 Distribution update Detail
16-04-2013 Image insert