• 1 Department of Zoology, Faculty of Natural Science, Comenius University, Mlynská dolina B-1, SK-842 15 Bratislava, Slovakia Comenius University Bratislava Slovakia
  • 2 Naturhistorisches Museum Wien, Burgring 7, A-1010 Wien, Austria Naturhistorisches Museum Wien Wien Austria
  • 3 Ateneo de Manila University, Biology Department, School of Science and Engineering, Loyola Heights, Quezon City 1101, Philippines Ateneo de Manila University Quezon City Philippines
  • 4 Zoology Lab, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84523, Bratislava, Slovakia Plant Science and Biodiversity Centre, Slovak Academy of Sciences Bratislava Slovakia
Zookeys, 2020;912:25-64.
PMID: 32123499 DOI: 10.3897/zookeys.912.47796


Ancyronyx clisterisp. nov. (Coleoptera, Elmidae) a new spider riffle beetle discovered from northern Borneo (Brunei; Sabah and Sarawak, Malaysia) and the larva of Ancyronyx sarawacensis Jäch are described. Illustrations of the habitus and diagnostic characters of the new species and the similar and highly variable A. sarawacensis are presented. Differences to closely related species, based on DNA barcodes and morphological characters, are discussed. Association of the larva and the imago of A. sarawacensis, and the occurrence of Ancyronyx procerus Jäch in Peninsular Malaysia and Sabah are confirmed by using COI mtDNA sequences.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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