A taxonomic review of the genus Ancyronyx Erichson, 1847 from Sulawesi (Insecta: Coleoptera: Elmidae)

ABSTRACT

Ten new species of the genus Ancyronyx Erichson, 1847 from Sulawesi are described along with additions to the original description of Ancyronyx raffaelacatharina Jäch, 2004. Ancyronyx vincentarnoldi sp. nov. belongs to the Ancyronyx variegatus (Germar, 1824) species-group; Ancyronyx breviparamerus sp. nov., Ancyronyx hafti sp. nov., Ancyronyx henningi sp. nov., Ancyronyx konjo sp. nov., Ancyronyx longiparamerus sp. nov., Ancyronyx skalei sp. nov., Ancyronyx schoedli sp. nov., Ancyronyx tobada sp. nov. and Ancyronyx toraja sp. nov. belong to the Ancyronyx patrolus Freitag & Jäch, 2007 species-group. Diagnostic characters are illustrated by photographs of habitus, line drawings of genitalia and by scanning electron micrographs. An updated checklist of all Ancyronyx species including distribution data is provided. Cox1 mitochondrial DNA sequences were amplified for nine of the species listed above and used to construct a haplotype network by the application of statistical parsimony. The molecular data support our morphological species concept except for two taxa that showed little genetic distance, but were distinguishable by the male genitalia.

http://zoobank.org/urn:lsid:zoobank.org:pub:0E11E48A-CE03-4D6F-B2F9-B83EEFA0790F

KEYWORDS:

• Ancyronyx
• Elmidae
• new species
• mitochondrial DNA
• taxonomy
• Sulawesi

Acknowledgements

We are very grateful to Dr Michael Balke and Rene Tänzler (Zoologische Staatssammlung, Munich, Germany) for the use of their laboratory facilities and help in processing of DNA samples. Sincere thanks are due to Angelito Felipe L. Puno (Quezon City, Philippines) for digital improvement and arrangement of the line drawings as well as Daniel Jablonski (Department of Zoology, Comenius University Bratislava, Slovakia) and Dr Michael Balke (Bavarian State Collection of Zoology, Munich, Germany) for their helpful suggestions and assistance on the molecular-genetic analysis. We thank Andre Skale, Hof, Germany and curator Dr Manfred Jäch, (World Water Beetle Collection & Research Centre at the Natural History Museum Vienna, Austria) for access to their collection of specimens. Thanks are also due to Miroslav Záhoran (Comenius University in Bratislava) for taking the scanning electron micrographs.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was partly supported by the Ateneo de Manila University under LS RCW Assistance Grant [SOSE 8 2012], a LS Scholarly Work Faculty Grant [SOSE 2 2014], and by the Slovak Scientific Grant Agency VEGA as Project No. 2/0101/16 and Project APVV-15-0147.