Another new ring nematode, Xenocriconemella andreae sp. nov. (Nematoda, Criconematidae), from the Iberian Peninsula

By

Cantalapiedra-Navarrete, Carolina
Clavero-Camacho, Ilenia
Criado-Navarro, Inmaculada
Salazar-García, Rosana
García-Velázquez, Ana
Palomares-Rius, Juan E.
Castillo, Pablo
Archidona-Yuste, Antonio

Type

Article

Date of Publication

2024-8-23

Original Publication

Zoosystematics and evolution

Volume

100

Series / Issue

Issue: 3

Pages

1175--1190

Subjects

18S , COI , D2-D3 , Description , integrative taxonomy , ITS , morphometry

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.100.129009

 

Abstract

Nematode surveys in natural environments in the Iberian Peninsula detected three unidentified Xenocriconemella populations that closely resembled the X. macrodora-species complex, but utilization of integrative taxonomy confirmed that they comprised a new taxon described in this paper as X. andreaesp. nov. Only females were detected in the new species (considered parthenogenetic) and delineated with a bare body (274–353 µm); lip region with two annuli, continuous with body delineation; second lip annulus enclosed by the first one. Flexible and thin stylet (88.0–99.0 µm), representing 30.4–47.8% of total body length. The excretory pore is positioned 2–3 annuli posterior to the level of stylet knobs, at 101.5 (87–107) µm from the lip region. Female genital tract: monodelphic, prodelphic, large, and representing 34.4–52.4% of the body length; vagina slightly ventrally curved. The anus is located at (6–9) annuli from the rear end. Tail short, conoid, and blunt round terminus. Ribosomal and mitochondrial markers (D2-D3 expansion domains of 28S, ITS, partial 18S rRNA, and COI), as well as molecular phylogenetic analyses of sequences, confirmed this new taxon, and it was clearly delineated from X. macrodora and species within the species complex (X. costaricense, X. iberica, X. paraiberica, and X. pradense).