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Type: Article
Published: 2020-07-02
Page range: 317–330
Abstract views: 82
PDF downloaded: 7

Redescription of three species of Apobaetis Day, 1955 (Ephemeroptera: Baetidae)

Universidade Federal de Rondônia—UNIR, Programa de Pós-Graduação em Ciências Ambientais, Programa de Pós-Graduação em Ensino de Ciências, Laboratório de Biodiversidade e Conservação, CEP: 76940-000, Rolim de Moura, Rondônia, Brazil. Instituto Nacional de Pesquisas da Amazônia—INPA, Coordenação de Pesquisas em Biodiversidade, Laboratório de Citotaxonomia e Insetos Aquáticos, CEP 69067–375, Manaus, Amazonas, Brazil
Ephemeroptera aquatic insect types Neotropics key

Abstract

The genus Apobaetis Day is one of the few lineages of the family Baetidae distributed throughout the continental Americas. Three very similar species of this genus—Apobaetis etowah (Traver), Apobaetis signifer Lugo-Ortiz & McCaffety, and Apobaetis fiuzai Salles & Lugo-Ortiz—have important morphological details, pertinent to species identification, that remain to be described. This lack of detailed taxonomic information has resulted in ample misdiagnoses of the species, particularly regarding A. fiuzai in South America. In fact, almost all the recently collected specimens have been assigned to this species. The present study aimed to establish a new morphological diagnosis of these three Apobaetis species through a redescription of their larvae, based on type material, and the proposition of a new identification key for larvae of this genus. The review of the type specimens supports two conclusions: (i) that A. etowah, A. signifer, and A. fiuzai are highly similar, yet can be considered as distinct species, and (ii) the previous diagnoses and keys do not effectively separate A. fiuzai from A. signifer.

 

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