Aquatic beetle diversity from Volcán Tacaná, Mexico: altitudinal distribution pattern and biogeographical affinity of the fauna

Author:

Luna-Luna Alba Magali,Martins Caleb CalifreORCID,López-Pérez Andrés,Ramírez-Ponce AndrésORCID,Contreras-Ramos AtilanoORCID

Abstract

Results of an aquatic beetle survey at Volcán Tacaná, Mexico, are presented with five altitudinal levels in a monthly sampling regime, aiming to estimate both diversity and altitudinal distribution patterns of the aquatic beetle fauna. The first list of aquatic beetle species from this mountain is presented, comprising 40 species in 32 genera and nine families, with four species recorded for the first time from Mexico and six recorded for the first time from Chiapas. The aquatic beetle fauna is characterized by Elmidae with 20 species, Dytiscidae with eleven species, Dryopidae with three, and Epimetopidae, Hydraenidae, Hydrophilidae, Gyrinidae, Lutrochidae, and Noteridae with one species each. The species composition through the sampled altitudinal gradient (670–1,776 m) was not homogeneous, with the elmid generaMacrelmis,Heterelmis,Microcylloepus, andAustrolimniuspresent at all levels, whileHexanchorus,Neoelmis, andOnychelmiswere present at levels 1–3 (673–1,214 m); dytiscids were mostly present at levels 4 and 5 (1,619–1,776 m), and dryopids were present only at levels 1–3. A Parsimony Analysis of Endemicity supports a general partition between altitudinal levels 1–3 and levels 4 + 5.

Funder

Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México

Publisher

Pensoft Publishers

Subject

Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

Reference109 articles.

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