Two new species of opiliones from southern Siberia and Mongolia, with an establishment of a new genus and redefinition of the genus Homolophus (Arachnida: Opiliones: Phalangiidae)

Abstract

Two opilionid species of Phalangiinae (Phalangiidae), Acanthomegabunus sibiricus n. gen. and n. sp., and Homolophus gobiensis n. sp. are described from southern Siberia, Russia, and Mongolia, respectively. A refined diagnosis of the genus Homolophus is presented. Phalangium pallens Kulczynski is resurrected and placed under Homolophus. Homolophus potanini is removed from the genus and is placed provisionally in the genus Opilio. Opilio asiaticus Gricenko 1979 is first synonymized with Opilio potanini (Simon 1895).