Hidden diversity within the Nemastoma bidentatum Roewer, 1914 complex (Opiliones: Nemastomatidae) Part I: Morphological evidence

Dataset type

This dataset contains a list of species with an associated trait.

Description

<p>This dataset contains the digitized treatments in Plazi based on the original journal article Novak, Tone, Novak, Ljuba Slana, Kozel, Peter, Schaider, Miriam Gudrun, Komposch, Christian, Lipovšek, Saška, Podlesnik, Jan, Paušič, Igor, Raspotnig, Günther (2021): Hidden diversity within the Nemastoma bidentatum Roewer, 1914 complex (Opiliones: Nemastomatidae) Part I: Morphological evidence. European Journal of Taxonomy 777: 1-67, DOI: 10.5852/ejt.2021.777.1561</p><p>Abstract. Nemastoma bidentatum Roewer, 1914 is a complex of closely related litter-dwelling harvestmen, characterized by a penis glans with two pairs of lateral lancet-like spines, and a femur IV with a sawlike series of pointed tubercles. Here we a) revise the hitherto known taxa within the N. bidentatum complex, and b) analyze in detail the relations among the taxa in Slovenia. The study revealed that the N. bidentatum complex consists of four species: N. bidentatum Roewer, 1914 s. str., N. relictum Gruber&amp; Martens, 1968 stat. nov., N. pluridentatum (Hadži, 1973) stat. nov. and N. kozari Novak, Kozel, Podlesnik &amp; Raspotnig sp. nov. Moreover, N. bidentatum s. str. consists of six subspecies: N. bidentatum bidentatum Roewer, 1914, N. bidentatum sparsum Gruber &amp; Martens, 1968, N. bidentatum gruberi Novak, Slana Novak, Kozel &amp; Raspotnig ssp. nov., N. bidentatum martensi Novak, Slana Novak &amp; Raspotnig ssp. nov., N. bidentatum schmidti Novak, Raspotnig &amp; Slana Novak ssp. nov. and N. bidentatum sneznikensis Novak, Komposch, Slana Novak &amp; Raspotnig ssp. nov. In Slovenia, the six subspecies of N. bidentatum form a parapatric complex around N. bidentatum schmidti. Hybrids occur in the contact zones between adjacent subspecies, but they are missing between distant subspecies. The taxonomic distinction of lineages/subspecies is congruent with their distribution patterns. With six of the nine taxa present, Slovenia is considered the center of the N. bidentatum complex speciation. At the time being, this complex is the most diversified harvestman group on a subspecific and young-species level and provides important details on speciation processes in Opiliones.</p>

Type of content

Includes: Species list, taxonomy, gbif import.

Citation

Novak T, Novak L S, Kozel P, Schaider M G, Komposch C, Lipovšek S, Podlesnik J, Paušič I, Raspotnig G, felipe (2021). Hidden diversity within the Nemastoma bidentatum Roewer, 1914 complex (Opiliones: Nemastomatidae) Part I: Morphological evidence. European Journal of Taxonomy. Checklist dataset https://doi.org/10.5852/ejt.2021.777.1561 accessed via GBIF.org on 2026-05-18. Accessed 30.05.2026.

Metadata last updated on 18.05.2026 16:53