On the identity of Chamaedrilus glandulosus (Michaelsen, 1888) (Clitellata, Enchytraeidae), with the description of a new species

By

Martinsson, Svante
Rota, Emilia
Erséus, Christer

Type

Article

Date of Publication

2015

Original Publication

ZooKeys

Volume

501

Pages

1-14

Subjects

Chamaedrilus , Cognettia , cryptic species , Oligochaeta , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.501.9279

 

Abstract

The taxonomy of Chamaedrilus glandulosus (Michaelsen, 1888) s. l., most commonly known previously as Cognettia glandulosa, is revised. A recent molecular systematic study has shown that this taxon harbours two cryptic, but genetically well separated lineages, each warranting species status. In this study these two lineages are scrutinized morphologically, on the basis of Michaelsen’s type material as well as newly collected specimens from Central and Northern Europe. Chamaedrilus glandulosus s. s. is redescribed and Ch. varisetosus sp. n. is recognized as new to science. The two species are morphologically very similar, differing mainly in size, but seem to prefer different habitats, with Ch. glandulosus being a larger aquatic species, and Ch. varisetosus being smaller and mainly found in moist to wet soil.