Taxonomic review and phylogenetic analysis of fifteen North American Entomobrya (Collembola, Entomobryidae), including four new species

By

Katz, Aron
Giordano, Rosanna
Soto-Adames, Felipe

Type

Article

Date of Publication

2015

Original Publication

ZooKeys

Volume

525

Pages

Jan-75

Subjects

chaetotaxy , cryptic species , Phylogeny , species diagnosis , Willowsia

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.525.6020

 

Abstract

The chaetotaxy of 15 species of eastern North American Entomobrya is redescribed in order to determine potential characters for the diagnosis of cryptic lineages and evaluate the diagnostic and phylogenetic utility of chaetotaxy. As a result, four new species (E. citrensis Katz & Soto-Adames, sp. n., E. jubata Katz & Soto-Adames, sp. n., E. neotenica Katz & Soto-Adames, sp. n. and E. unifasciata Katz & Soto-Adames, sp. n.) are described, and new diagnoses are provided for E. assuta Folsom, E. atrocincta Schött, E. decemfasciata (Packard), E. ligata Folsom, E. multifasciata (Tullberg), and E. quadrilineata (Bueker). Furthermore, previously undocumented levels of intraspecific variation in macrosetal pattern are reported, tempering the exclusive use of chaetotaxy for species delimitation. Phylogenetic relationships, estimated using both morphological and molecular data, indicate that Entomobrya is likely paraphyletic. The phylogenies also suggest that unreliable character homology, likely fostered by Entomobrya’s profusion of macrosetae, may limit the phylogenetic utility of chaetotaxy in groups characterized by an abundance of dorsal macrosetae.