About: Ancyronyx is a research topic. Over the lifetime, 17 publications have been published within this topic receiving 93 citations. The topic is also known as: spider water beetles & spider riffle beetles.
TL;DR: The immature stages of six Ancyronyx (Spider Riffle Beetles) species from Sulawesi are described and assigned to adults by comparison of their Cox1 gene fragment which was amplified, sequenced and aligned with the corresponding locus of identified adults.
Abstract: We describe the immature stages of six Ancyronyx (Spider Riffle Beetles) species from Sulawesi: A. henningi Freitag & Kodada, 2017; A. longiparamerus Freitag & Kodada, 2017; A. skalei Freitag & Kodada, 2017; A. schoedli Freitag & Kodada, 2017; A. tobada Freitag & Kodada, 2017 and A. toraja Freitag & Kodada, 2017. The larvae were assigned to adults by comparison of their Cox1 gene fragment (mtDNA) which was amplified, sequenced and aligned with the corresponding locus of identified adults. The larvae are illustrated with habitus photographs and SEM micrographs.
TL;DR: The previously unknown larva of Ancyronyx schillhammeri is also described here, aided by cox1 data, and the new species and larval stages are described in detail and illustrated by SEM and stacked microscopic images.
Abstract: Ancyronyx buhid sp. n. and Ancyronyx tamaraw sp. n. are described based on adults and larvae, matched using their cox1 or cob DNA sequence data. Additional records of Ancyronyx schillhammeri Jach, 1994 and Ancyronyx minerva Freitag & Jach, 2007 from Mindoro are listed. The previously unknown larva of Ancyronyx schillhammeri is also described here, aided by cox1 data. The new species and larval stages are described in detail and illustrated by SEM and stacked microscopic images. Keys to the adult and larval Ancyronyx species of Mindoro and an updated checklist of Philippine Ancyronyx species are provided. The usefulness as bioindicators, the phylogenetic relationships and biogeographic aspects affecting the distribution patterns are briefly discussed.
TL;DR: Larvae of six additional species of Ancyronyx Erichson, 1847 were also described here for the first time, aided by cox1 or cob data, and new species and larval stages are described and illustrated by digital and SEM images.
Abstract: Ancyronyx montanussp. n. is described based on adults and larvae, matched using their cox1 DNA sequence data. Larvae of six additional species of Ancyronyx Erichson, 1847 were also described here for the first time, aided by cox1 or cob data: Ancyronyx helgeschneideri Freitag & Jach, 2007, Ancyronyx minerva Freitag & Jach, 2007, Ancyronyx patrolus Freitag & Jach, 2007, Ancyronyx procerus Jach, 1994, Ancyronyx punkti Freitag & Jach, 2007, Ancyronyx pseudopatrolus Freitag & Jach, 2007. Ancyronyx procerus is newly recorded from the Philippines by a larval specimen from Busuanga island. The new species and larval stages are described in detail and illustrated by digital and SEM images. A key to the Ancyronyx larvae of Palawan and an updated checklist of Philippine Ancyronyx is provided.
TL;DR: The species of the elmid genus Ancyronyx Erichson from the Philippine islands of Palawan and Busuanga are revised and six new species are described.
Abstract: The species of the elmid genus Ancyronyx Erichson from the Philippine islands of Palawan and Busuanga are revised. Six new species are described: Ancyronyx helgeschneideri Freitag & Jach sp. n., A. minerva Freitag & Jach sp. n., A. minutulus Freitag & Jach sp. n., A. patrolus Freitag & Jach sp. n., A. pseudopatrolus Freitag & Jach sp. n., and A. punkti Freitag & Jach sp. n. A checklist and a key to the species of Ancyronyx recorded from the Philippines are provided.