Amaurobiidae  Thorell, 1870 / Amaurobius  C. L. Koch, 1837   35 species

Amaurobius similis  (Blackwall, 1861)

Description

Dorsal tibial apophysis with straightly truncated lateral process. Epigyne with large, trapezoid groove. Prosoma yellowish-brown, sides and eye region darkened. Sternum yellowish. Chelicerae brown. Legs red-brown, vaguely annulated. Opisthosoma yellowish grey or reddish, with 4 black spots dorsally in anterior part, often merged.

Body length male: 6.5-8 mm
Body length female: 9-12 mm
Additional information

Under stones, in crevices, under bark and in basements.

This species can bite humans when accidently squeezing them. The bite leads in one case to numbness in the arm, disappearing after one hour (J. Wolff, personal communication).

Distribution
  Presence
  No data
Global distribution (WSC 2018): Europe, Caucasus. Introduced to North America
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
References

Blagoev G, Deltshev C, Lazarov S, Naumova M (2017) The spiders (Araneae) of Bulgaria. Version: October 2017. National Museum of Natural History, Bulgarian Academy of Sciences. Online at http://www.nmnhs.com/spiders-bulgaria/ (accessed on 12.10.2017)

Braendegaard J (1966) Edderkopper: Eller Spindlere I Danmarks Fauna 72: 1-224

Dresco E (1977) Recherches sur les Amaurobius (Araneae, Amaurobiidae) et description de A. tessinensis sp. nov. du Tessin (Suisse). Rev Suisse Zool 84: 873-882

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

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

Lissner J, Jensen J-K, Hansen L J, Simonsen W, Kelduni R, Nissen K (2016) An updated checklist of spiders (Araneae) of the Faroe Islands. Norwegian Journal of Entomology 63: 197-240

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

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

Pantini P, Isaia M (2017) Checklist of the Italian spiders (version May 2017). online at http://www.museoscienzebergamo.it/web/index.php?option=com_content&view=category&layout=blog&id=96&Itemid=94

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

Staudt A, Weber D, Nährig D (2013) Webspinnen (Arachnida,  Araneae) aus Höhlen des Grossherzogtums Luxemburgs. Ferrantia 69: 115-157

Wiehle H (1953) Spinnentiere oder Arachnoidea (Araneae), IX. Orthognatha-Cribellata-Haplogynae, Entelegynae (Pholcidae, Zodariidae, Oxyopidae, Mimetidae, Nesticidae). Tierwelt Deutschlands 42

World Spider Catalog (2018) World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 19.0, accessed on 14.01.2018. doi: 10.24436/2

Updates
13-10-2017 Distribution update Old value
28-04-2013 Distribution update Old value
09-04-2013 Distribution update Old value