Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil

Abstract

Callibaetis Eaton remains poorly known in South America. Some of the species in the genus are difficult to identify with confidence and most are known only at the adult stage. In this paper we increase the number of species known to occur in Brazil from 11 to 18; diagnoses of species are improved; five new species are described based on nymphs and reared adults of both genders (C. calloventer sp. nov., C. cruentus sp. nov., C. gelidus sp. nov., C. itannae sp. nov., C. nigracyclus sp. nov.); first records of two species are reported from Brazil (C. gonzalezi and C. sellacki); descriptions of unknown stages are made (C. gonzalezi male imago and C. jocosus nymph); redescriptions of known stage are provided for male and female imago of C. jocosus. Based on these data, keys for nymph, male and female imago are proposed for Brazil. http://zoobank.org/urn:lsid:zoobank.org:pub:019D55A5-8979-4D9A-BB16-CB1451C8DF1B

Keywords:

• aquatic insects
• mayfly
• taxonomy
• new species
• neotropics

Acknowledgements

We thank Museu de Zoologia de Barcelona and Museo de Ciencias Naturales de la Plata, for photographs of types, Dr Carolina Nieto (CONICET-Facultad de Ciencias Naturales and IML) for sending to us specimens from Argentina and valuable suggestions, Pedro Brito for his help during expeditions and the valuable suggestion of C. Molineri. PVC received a fellowship from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), FFS from Instituto Nacional de Pesquisas da Amazônia (INPA)/CNPq – Programa de Capacitação Institucional (PCI), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Fundação de Apoio à Ciência e Tecnologia do Espírito Santo (FAPES), NH from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). Financial support was provided by research projects supported by “Insetos aquáticos: biodiversidade, ferramentas ambientais e a popularização da ciência para melhoria da qualidade de vida humana no Estado do Amazonas”/PRONEX-CNPq-FAPEAM and “Diversidade de Baetidae (Insecta: Ephemeroptera) na Região Sudeste do Brasil com ênfase na Fauna do Estado do Espírito Santo”/FAPES (process number 45429502/2009).