Two new Megalothorax species of the minimus group (Collembola, Neelidae)

By

Schneider, Clément
Porco, David
Deharveng, Louis

Type

Article

Date of Publication

2016

Original Publication

ZooKeys

Volume

554

Pages

37-68

Subjects

chaetotaxy , Description , DNA barcodes , labrum , Neelipleona , Springtails , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.554.6069

 

Abstract

Two new Megalothorax species, M. potapovi sp. n. from the Russian Far East and M. sanguineus sp. n. from the French Pyrénées are described. The two new species have a set of morphological characters (including a smooth mucro) that places them among the minimus group sensuSchneider and D’Haese (2013). Megalothorax potapovi characteristics include dorsal protuberance on forehead, peculiar chaetotaxy of antenna III and strong lanceolate chaetae on body. Megalothorax sanguineus characteristics include strong red pigmentation, large network of integumentary channels on head and elongated apex of the two postero-distal spines of dens. The DNA barcodes (cytochrome oxidase subunit I–COI) of the two species are also provided and analyzed among a broader sampling of the genus in order to support further their specific status. A special focus is given to the labral morphological characteristics. Pseudopores-like elements are reported for the first time in the genus. Positions of the τ-chaetae near the dorsal sensory field of thorax II are compared for several species of the genus.