Unexpected discovery of a new Podonychus species in Kyushu, Japan (Coleoptera, Elmidae, Elminae, Macronychini)

By

Yoshitomi, Hiroyuki
Hayashi, Masakazu

Type

Article

Date of Publication

2020

Original Publication

ZooKeys

Volume

933

Pages

107--123

Subjects

disjunct distribution , Endophallus , Larvae , new species , riffle beetle , SEM , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.933.48771

 

Abstract

Podonychus gyobusp. nov., a second species of the genusPodonychusJäch & Kodada, 1997, hitherto known only from Indonesia, is described from Kyushu, Japan. This new species is similar toP. sagittariusJäch & Kodada, 1997, but differs from it in the straight penis, arcuate 2ndlabial palpomere, and in the 3rdantennomere being longer than wide. The endophallic structures and the larva ofP. gyobusp. nov.are described. A character matrix of the Macronychini genera and a key to the Japanese genera are provided.