European Journal of Taxonomy 216: 1–35 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2016.216 www.europeanjournaloftaxonomy.eu 2016 · Martens J. & Schönhofer A.L. This work is licensed under a Creative Commons Attribution 3.0 License. Research article urn:lsid:zoobank.org:pub:2F526459-E23A-458B-9829-31F4C1BC6C46 The Leiobunum rupestre species group: resolving the taxonomy of four widespread European taxa (Opiliones: Sclerosomatidae) Jochen MARTENS 1,* & Axel L. SCHÖNHOFER 2 1,2 Johannes Gutenberg-Universität Mainz, Institut für Zoologie, 55099 Mainz, Germany * Corresponding author:
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[email protected] 1 urn:lsid:zoobank.org:author:F01C78F1-5EBF-48E8-B37E-634DF00E0237 2 urn:lsid:zoobank.org:author:91B2971C-D8CE-4F98-903F-C963E83E8C7C Abstract. Within the central European opilionid fauna the widely used species names Leiobunum rupestre Herbst, 1799 and Leiobunum tisciae Avram, 1968 pose taxonomic and distributional problems. In addition, Nelima apenninica Martens, 1969 is close to L. tisciae in terms of external and genital morphology, but is specifi cally distinct. While coxal denticulation is largely lacking in N. apenninica, the validity of the genus Nelima Roewer, 1910 is questioned again. In addition, Leiobunum subalpinum Komposch, 1998, a recently described novelty from the eastern Alps, is closely related to L. rupestre. The four species are combined as the morphologically defi ned Leiobunum rupestre species group. Except for L. subalpinum, they were found to be allopatrically distributed from the Carpathians across central and Northwest Europe to the south-western Alps. The latter species is locally sympatric and partly elevationally parapatric to L. rupestre.