Xysticus emertoni Keyserling, 1880
Description
Male
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 mmFemale
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 mmDistribution
Figures
Pedipalp, ventral view
(Song et al. 1999)
Pedipalp, retrolateral view
(Marusik & Fomichev 2026)
Pedipalp, ventral view
(Marusik & Fomichev 2026)
Pedipalp, retrolateral view
(Dondale & Redner 1978)
Pedipalp, ventral view
(Dondale & Redner 1978)
Epigyne, ventral view
(Song et al. 1999)
Epigyne
(Dondale & Redner 1978)
Vulva, dorsal view
(Dondale & Redner 1978)
Distribution List
References
Dondale C D, Redner J H (1978) The insects and arachnids of Canada, Part 5. The crab spiders of Canada and Alaska, Araneae: Philodromidae and Thomisidae. Research Branch Agriculture Canada Publication 1663: 1-255 
Gajdoš P, Svatoň J (2007) Supplementary records to catalogue of Slovakian spiders. Entomofauna Carpathica 19: 21-26
Marusik Y M, Fomichev A A (2026) New data on spiders (Arachnida: Aranei) from northeastern Yakutia. Arthropoda Selecta 35: 135-146
Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262
Schenkel E (1931) Arachniden aus dem Sarekgebirge. In: Naturwissenschafliche Untersuchungen des Sarekgebirges in Schwedisch-Lappland. Band IV, Zoologie. Stockholm, pp. 949-980.
Song D X, Zhu M S, Chen J (1999) The spiders of China. Hebei Science and Technology Publishing House, Shijiazhuang, 640 pp.
Tullgren A (1944) Svensk spindelfauna. 3. Egentiliga spinddlar. Araneae Fam 1-4. Salticidae, Thomisidae, Philodromidae och Eusparassidae. Stockholm (Entomol Fören.): 138 pp.
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.5.2026) doi: 10.24436/2