Taxonomic analysis of the Mexican species of Belonuchus Nordmann of the ephippiatus group (Coleoptera: Staphylinidae)

  • Juan Márquez Luna Laboratorio de Sistemática Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo
  • Julieta Asiain Alvarez Laboratory of Animal Systematic, Biological Researchs Center, UAEH
  • José Luis Navarrete-Heredia Entomología, Centro de Estudios en Zoología, CUCBA, Universidad de Guadalajara
Keywords: Belonuchus moroni sp. nov., Mexico, synonymy, taxonomy

Abstract

We analyzed 117 specimens from eight Mexican states and 22 localities whose taxonomic identification was doubtful to assign them to Belonuchus ephippiatus or B. erytrhopterus. The goal of this paper is to analyze the most important characters reported in the literature to separate both species and decide if it is one or two entities. The analysis included the measurement of different parts of the body and the proportions between them, but this one focused on the total body length, the number of punctures that form each of the two central rows of the pronotum, the aedeagus length and its proportion in relation to the body length, since they are the most important characters indicated in the literature that allows to separate the two species. The results show that it is not possible to distinguish two species with any of the characters analyzed, combined or alone, so it was proposed for the second time in the history of these species that B. erythropterus is a junior synonym of B. ephippiatus. Aspects of the great morphological variation observed in B. ephippiatus, its geographic distribution and its biology are discussed. Finally, a new species of the same species group is described and it is distinguished from B. ephippiatus, besides providing schemes and photographs that help its recognition.

Author Biographies

Julieta Asiain Alvarez, Laboratory of Animal Systematic, Biological Researchs Center, UAEH

Profesora de asignatura en la Licenciatura en Biología, de la Universidad Autónoma del Estado de Hidalgo. Es especialista en sistemática de coleópteros, particularmente de la familia Staphylinidae. Ha publicado trabajos sobre sistemática y biogeografia de coleópteros en revistas, nacionales, extranjeras y de divulgación.

José Luis Navarrete-Heredia, Entomología, Centro de Estudios en Zoología, CUCBA, Universidad de Guadalajara

Profesor investigador de la Universidad de Guadalajara, en el Centro de Estudios en Zoología. Es especialista en sistemática de Coleoptera, particularmente de la familia Staphylinidae. Ha publicado trabajos especializados sobre el tema en revistas nacionales y extranjeras así como libros de divigación, entre ellos "Historias de artrópodos", que fue ganador dentro del concurso Publica tu libro del Sindicato de Trabajadores Académicos de la UDG. Es editor de la revista Dugesiana especializada en entomología.

Published
2018-06-30
Section
Original Articles