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

Christo Deltshev; Simeon Indzhov

Christo Deltshev https://orcid.org/0000-0003-0539-5673; Simeon Indzhov https://orcid.org/0000-0002-8937-9373

Volume 48 (Issue 6): 159–164 · 1 June 2026

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.

Keywords: Bulgaria, discussion, new records, taxonomy

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Additional information

Received: 21 January 2026 · Accepted: 11 May 2026

Editor: Mihail Kechev

Conflicts of interest:
No potential conflict of interest has been reported by the authors, reviewers, or subject editor.

Authors’ contributions (using CrediT ↗):
Christo Deltshev: conceptualisation, methodology, resources, supervision, visualisation, writing—original draft, writing—review and editing; Simeon Indzhov: conceptualisation, data curation, investigation, resources, writing—original draft, writing—review and editing.