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
"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.
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 (13.2.2026) doi: 10.24436/2