Segestriidae  Simon, 1893 / Segestria  Latreille, 1804   9 species

Segestria florentina  (Rossi, 1790)


Palp : the embolus is shorter than in S. senoculata, and not bifurcal. Palp with blunt tip of bulbus. Prosoma black. Sternum red-brown to dark brown-black. Metatarsus I laterally with one pair of spines. Opisthosoma black, sometimes appearing grey due to bright hairs.

Body length male: 10-15 mm

Sternum reddish-brown to dark brown, as coxa. Clypeus as wide as or wider than diameter of anterior lateral eyes. Chelicerae with a metallic green sheen. Leg I black, legs II, III and IV reddish-brown, without annulations in adults, metatarsus I with one short median ventral spine at apex, one pair of ventrolateral spines, and close to the pair a single median spine. Opisthosoma: in adults, uniform blackish-brown with a purplish sheen, dorsally a lobed band scarcely distinct, in juveniles the opisthosoma is lighter and the dorsal band much more distinct.

Body length female: 14-22 mm
Additional information

Juveniles of S. florentina look like adults of S. bavarica. In forests, under barks and stones, rock crevices, stone walls, semi-dry grasslands, littoral, under shingle, in houses.

  Not established
  No data
Global distribution (WSC 2019): Europe to Georgia. Introduced to Brazil, Uruguay, Argentina
 male  female
Adults of both sexes in spring, summer and autumn.

Blagoev G, Deltshev C, Lazarov S, Naumova M (2018) The spiders (Araneae) of Bulgaria. Version: August 2018. National Museum of Natural History, Bulgarian Academy of Sciences. Online at (accessed on 10.9.2018)

Bosmans R. (unpubl.) Spiders of North Africa. Database excerpt Aug. 2019

Brignoli P M (1976b) Ragni d'Italia XXIV. Note sulla morfologia dei genitali interni dei Segestriidae e cenni sulle specie italiane (Araneae). Fragm Ent (Roma) 12: 19-62

Danışman T, Kunt K B, Özkütük R S (2019) The checklist of the spiders of Turkey. Version 2018 [last updated 1 January 2019], online at

Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin pdf

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

Kostanjšek R, Kuntner M (2015) Araneae Sloveniae: a national spider species checklist. ZooKeys 474: 1-91 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

Locket G H, Millidge A F (1951) British Spiders 1. Ray Soc London

Nolan M (2008) First records of three spider species in Ireland (Araneae): Glyphesis cottonae (La Touche), Mioxena blanda (Simon) (Linyphiidae) and Segestria florentina (Rossi) (Segestriidae). Bulletin of the Irish Biogeographical Society 32: 132-141 pdf

Otto S (2017) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 08.2017. Internet:

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

Roberts M J (1995) Spiders of Britain and Northern Europe. Collins Field Guide Bath

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

04-05-2017 Distribution update Old value