Abstract

RAZO-GONZALEZ, María; MARQUEZ, Juan; CASTANO-MENESES, Gabriela  and  NOVELO-GUTIERREZ, Rodolfo. The biogeographic complexity of the Sierra de Juarez, Oaxaca, Mexico, revealed through parsimony analysis of endemicity of caddisflies species (Insecta: Trichoptera). Rev. Mex. Biodiv. [online]. 2021, vol.92, e923808.  Epub Feb 03, 2022. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2021.92.3808.

The distributional patterns of 120 species of caddisflies recorded in the Sierra de Juarez, Oaxaca, were analyzed by means of parsimony analysis of endemicity with progressive character elimination (PAE-PCE) to identify generalized tracks. The analysis was based on distribution records from field collections and specialized literature, and the study units were the Mexican biogeographic provinces. Eight generalized tracks were identified that generally coincide with those found in other studies, all of them including the Veracruzan province. Tracks include provinces belonging to the Mexican Transition Zone and the Neotropical region. The 8 generalized tracks intersect or cross the Sierra de Juárez, forming a panbiogeographic node that is notably more complex compared to that reported in previous studies. This allows us to recognize that its biogeographic history has contributed considerably to its high biodiversity, and it is necessary that it is a protected natural area.

Keywords : Distributional patterns; Provinces; Parsimony; Generalized tracks; Nodes.