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

Xysticus emertoni  Keyserling, 1880


Palp: basal apophysis of tegulum slender throughout its length. Prosoma dark reddish-brown, flecked with white, pale median area enclosing large mottled area in front of dorsal groove. Opisthosoma dorsally with reddish-brown areas separated by light brownish median area and transverse lines. Legs mottled dark reddish-brown.

Prosoma length: 3.3-3.6 mm, prosoma width: 3.2-3.5 mm.

Body length male: 6.4 mm

Colour as in male but paler. Epigyne: atrial ridge extensive.

Prosoma length: 3.7-4.0 mm, prosoma width: 3.5-3.8 mm.

Body length female: 7.8 mm
  No data
Global distribution (WSC 2019): USA, Canada, Slovakia, Russia (Urals to Far East), Kazakhstan, Central Asia, China

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

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

Song D X, Zhu M S, Chen J (1999) The Spiders of China. Hebei Sci. Technol. Publ. House, Shijiazhuang, 640 pp

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

18-11-2015 Image insert