On the identity of the poorly known spider species Centromerus obscurus Boesenberg, 1902 and description of a new species (Araneae: Linyphiidae)

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  On the identity of the poorly known spider species Centromerus obscurus Boesenberg, 1902 and description of a new species (Araneae: Linyphiidae) Abstract The taxonomic status and distribution of the poorly known linyphiid species Centromerus obscurus Boesenberg, 1902 is discussed on the basis of newly collected material from Bulgaria. Additionally, after a review of the related literature and the newly collected material, a new species of Centromerus species, C. thaleri sp. n., is described based on both sexes and Centromerus obscurus is considered nomen dubium stat. reconf.  Deltshev, C. & Indzhov, S. (2026). On the identity of the poorly known spider species Centromerus obscurus Boesenberg, 1902 and description of a new species (Araneae: Linyphiidae). Historia Naturalis Bulgarica 48 (6): 159-164. doi: 10.48027/hnb.48.062

Ghost sighting: first Southeast Asian record of the ghost spider family Anyphaenidae, describing a new Rathalos species from Java, Indonesia

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Ghost sighting: first Southeast Asian record of the ghost spider family Anyphaenidae, describing a new Rathalos species from Java, Indonesia

ABSTRACT

A new species of bamboo-associated ghost spider, Rathalos inagami Dhiya’ulhaq & Dwikelana sp. nov., is described from Java, Indonesia, based on male and female specimens. The species is diagnosed by distinct genitalic characters, including a four-lobed median apophysis in males and a wide triangular epigynal plate with strongly S-shaped copulatory ducts in females. This constitutes the first record of the family Anyphaenidae and the genus Rathalos from Southeast Asia, thereby extending the known distribution of the group.