Marusik Yu.M.1, Mikhailov K.G.2 2021. Revalidation of Xysticus tuberosus Thorell, 1875 (Aranei: Thomisidae) with notes on the related species // Arthropoda Selecta. Vol.30. No.1: 119–124 [in English].

1 Institute for Biological Problems of the North, FEB RAS, Portovaya Str. 18, Magadan, 685000 Russia. E-mail:

2 Zoological Museum MGU, Bolshaya Nikitskaya Str., 2, Moscow 125009 Russia. E-mail:

doi: 10.15298/arthsel.30.1.11

ABSTRACT. Revision of the types of Xysticus lugubris Kroneberg, 1875 (now considered in Ozyptila) and X. tuberosus Thorell, 1875, thought to be a junior synonym of X. lugubris, and a study of recently collected material reveals that two names are not synonyms. A new combination, Ozyptila tuberosa comb.n., is suggested for X. tuberosus. Males of two species show clear differences in the shape of the embolus tip, although females are indistinguishable. Both species are illustrated and their copulatory organs are described. In addition, we illustrate Ozyptila inaequalis (Kulczyński, 1901), a species closely related to both O. lugubris and O. tuberosa. All these three species are not related to the types species of both Ozyptila and Xysticus and deserve the status of a separate genus.

KEY WORDS: Xysticus, Ozyptila, Caucasus, Southeastern Europe, Middle Asia, Central Asia, new combination.

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