A New Species of Triumphalisnema (Nematoda: Coronostomatoidea) Parasite of Proculejus hirtus (Coleoptera: Passalidae) from Mexico, and the Position of the Family in the Oxyuridomorpha

• Published in: The Journal of parasitology Vol. 106; no. 1; pp. 172 - 179
• Main Authors: de Oca, Edgar Uriel Garduño-Montes, Vega-Badillo, Viridiana, López-Caballero, Jorge, Ram&iacuterez-Cañas, Sara Angélica, Mata-López, Rosario
• Format: Journal Article
• Language: English
• Published: United States American Society of Parasitologists 01.02.2020; Allen Press Publishing; Allen Press Inc
• Subjects: Bayesian analysis; Bayesian theory; Beetles; Congeners; Coronostomatoidea; Deoxyribonucleic acid; DNA; eggs; Entomoparasitic Nematode; Ethanol; forests; Gene sequencing; Hidalgo; Hystrignathidae; Identification keys; Invertebrates; Mexico; Molecular Systematics; Morphology; Mountains; Nematoda; Nematodes; New species; Nucleotides; Parasites; Passalidae; Phylogenetics; Phylogeny; Polymerase chain reaction; ribosomal DNA; ribosomal RNA; rRNA 18S; Scanning Electron Microscopy; Sequences; Software; statistical analysis; Statistical inference; Systematics; SYSTEMATICS-PHYLOGENETICS; Taxonomic Key; taxonomic keys; Taxonomy; Traklosiidae; Wood-Eating Beetles; Worms; England; Mexico; United Kingdom > UK; Japan; Entomoparasitic Nematode; Molecular Systematics; Morphology; Traklosiidae; Coronostomatoidea; Mexico; Hidalgo; Hystrignathidae; Scanning Electron Microscopy; Taxonomic Key; Nematoda; Wood-Eating Beetles
• ISSN: 0022-3395; 1937-2345; 1937-2345
• DOI: 10.1645/19-64

A new species of the nematode TriumphalisnemaKloss, 1962 (Oxyuridomorpha), is described from the wood beetle Proculejus hirtus Truqui from the mountain mesophilic forest in Hidalgo State, Mexico. Triumphalisnema zuuei n. sp. is distinguished from the other 4 congeners species by the presence of an expanded cervical ring, well-developed lateral alae, an obtuse cauda with a short and bifurcated caudal appendage, series of cuticular folds at ventral and dorsal body surface from excretory pore level to anal region, and ellipsoidal eggs ornamented with numerous small mushroom-like structures over the surface. The phylogenetic position of the new species is inferred based on a Maximum Likelihood and Bayesian Inference analysis of partial sequences of 18S SSU rRNA. The phylogenetic analysis showed that Triumphalisnema zuuei n. sp., the only representative of the Traklosiidae in our study, is closely related to Coynema poeyi and species of Longior, Hystrignathus, and Lepidonema, all of them members of Hystrignathidae. These relationships are supported by high support values. The present study increases to 5 the number of species assigned to Triumphalisnema, all of them parasites of Passalidae. Additionally, a taxonomic key to the species of the genus is provided.