Xysticus cristatus, copyright Philippe Garcelon.

Belongs within: Thomisidae.

Xysticus, ground crab spiders, is a genus of crab spiders with a generally flattened abdomen, carapace with the front distinctly higher than the back, and the two pairs of lateral eyes on incompletely joined tubercles.

    |--X. altaicus Simon 1895 S95
    |--X. audax R14
    |--X. bifasciatus CM07
    |--X. bliteus (Simon 1875) PO08
    |--X. calenzanae Kraus 1955 K55
    |--X. canadensis Gertsch 1934 PS08
    |--X. caperatus Simon 1875 PO08
    |--X. connectens Kulczyński 1901 K01
    |--X. cristatus (Clerck 1757) PO08
    |--X. cunctator MC02
    |--X. edax (Pickard-Cambridge 1872) PO08
    |--X. elegans JVHN90
    |--X. elongatus (Stoliczka 1869) [=Thomisus (Xysticus) elongatus] S69
    |--X. emertoni Keyserling 1880 M01
    |--X. erraticus (Blackwall 1834) BBM02
    |--X. fienae JD-S07
    |--X. fucatus [incl. X. albimanus] K01
    |--X. grallator Simon 1932 K55
    |--X. inaequalis Kulczyński 1901 K01
    |--X. kempeleni Thorell 1872 PO08
    |--X. kochii Thorell 1872 K55
    |--X. lanio Koch 1835 MF11
    |--X. lateralis K01
    |--X. lineatus (Westring 1851) PO08
    |--X. luctator K01
    |--X. luctuosus K01
    |--X. ninni BV00
    |--X. nubilus Simon 1875 K55
    |--X. obscurus Collett 1887 PS08
    |--X. pini K01
    |--X. promiscuus Pickard-Cambridge 1876 PO08
    |--X. pugilis (Stoliczka 1869) [=Thomisus (Xysticus) pugilis] S69
    |--X. punctatus JDW90
    |--X. sabulosus (Hahn 1832) BBM02
    |--X. secedens BV00
    |--X. striatipes K01
    |--X. ulmi (Hahn 1831) K55
    |--X. viaticus CM07
    `--X. xerodermus Strand 1913 PO08

*Type species of generic name indicated


[BV00] Bayram, A., & M. İ. Varol. 2000. Spiders active on snow in eastern Turkey. Zoology in the Middle East 21: 133–137.

[BBM02] Bonte, D., L. Baert & J.-P. Maelfait. 2002. Spider assemblage structure and stability in a heterogeneous coastal dune system (Belgium). Journal of Arachnology 30 (2): 331–343.

[CM07] Cokendolpher, J. C., & P. G. Mitov. 2007. Natural enemies. In: Pinto-da-Rocha, R., G. Machado & G. Giribet (eds) Harvestmen: The Biology of Opiliones pp. 339–373. Harvard University Press: Cambridge (Massachusetts).

[JDW90] Jennings, D. T., J. B. Dimond & B. A. Watt. 1990. Population densities of spiders (Araneae) and spruce budworms (Lepidoptera, Tortricidae) on foliage of balsam fir and red spruce in east-central Maine. Journal of Arachnology 18: 181–194.

[JVHN90] Jennings, D. T., W. M. Vander Haegen & A. M. Narahara. 1990. A sampling of forest-floor spiders (Araneae) by expellant, Moosehorn National Wildlife Refuge, Maine. Journal of Arachnology 18: 173–180.

[JD-S07] Jocqué, R., & A. S. Dippenaar-Schoeman. 2007. Spider Families of the World. Royal Museum for Central Africa: Tervuren (Belgium).

[K55] Kraus, O. 1955. Spinnen von Korsika, Sardinien und Elba (Arach., Araneae). Senckenbergiana Biologica 36: 371–394.

[K01] Kulczyński, V. 1901. Arachnoideák [Arachnoidea]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 311–369. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.

[MF11] Mąkol, J., & M. Felska. 2011. New records of spiders (Araneae) as hosts of terrestrial Parasitengona mites (Acari: Actinotrichida: Prostigmata). Journal of Arachnology 39 (2): 352–354.

[MC02] Miliczky, E. R., & C. O. Calkins. 2002. Spiders (Araneae) as potential predators of leafroller larvae and egg masses (Lepidoptera: Tortricidae) in central Washington apple and pear orchards. Pan-Pacific Entomologist 78 (2): 140–150.

[M01] Morse, D. H. 2001. Harvestmen as commensals of crab spiders. Journal of Arachnology 29: 273–275.

[PS08] Pinzón, J., & J. Spence. 2008. Performance of two arboreal pitfall trap designs in sampling cursorial spiders from tree trunks. Journal of Arachnology 36 (2): 280–286.

[PO08] Pluess, T., I. Opatovsky, E. Gavish-Regev, Y. Lubin & M. H. Schmidt. 2008. Spiders in wheat fields and semi-desert in the Negev (Israel). Journal of Arachnology 36 (2): 368–373.

[R14] Ramírez, M. J. 2014. The morphology and phylogeny of dionychan spiders (Araneae: Araneomorphae). Bulletin of the American Museum of Natural History 390: 1–374.

[S95] Simon, E. 1895. Arachnides recueillis par Mr G. Potanine en Chine et en Mongolie (1876–1879). Izviestĭia Imperatorskoi Akademĭi Nauk” [Bulletin de l’Academie Imperiale des Sciences de St. Pétersbourg], Ser. 5, 4: 331–345.

[S69] Stoliczka, F. 1869. Contribution to the knowledge of Indian Arachnoidea. Journal of the Asiatic Society of Bengal 38 pt 2 (4): 201–251, pls 18–20.

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