Three new species of Baetodes Needham & Murphy (Ephemeroptera: Baetidae) from Espírito Santo State, Brazil

Abstract

Three new species of Baetodes Needham & Murphy are described and illustrated based on nymphs from Espírito Santo State, Brazil. These new species have a single coxal gill and tubercles on metanotum and abdominal segments I–IX. The main characteristics that can be used to distinguish them from other species of genus are presented. Baetodes capixaba sp. nov.: labrum with subapical row of 1 + 4 setae, tubercle on metanotum as long as first abdominal tubercle, and abdominal gills oblong; B. iuaquita sp. nov., labrum expanded laterally with subapical row of 12–13 setae, outer margin of mandibles slightly convex with a depression near base of incisors, incisors curved, tubercle on metanotum half the length of first abdominal tubercle, and abdominal gills subrectangular; B. proscolus sp. nov.: tubercle on pronotum, tubercle on metanotum nearly one half the length of first abdominal tubercle, abdominal gills with inner margin curved and outer margin straight.

Keywords:

• Neotropics
• taxonomy
• Baetodes capixaba sp. nov.
• Baetodes iuaquita sp. nov.
• Baetodes proscolus sp. nov.

Acknowledgements

The authors thank André M. Cunha (MN/UFRJ) and Leandro S. Barbosa (MN/UFRJ) for help with photographs; Dr Daniela M. Takyia (IB/UFRJ) and Dr Nélson Ferreira Júnior (IB/UFRJ) for help with figures. We are grateful to Dr Inácio Domingos da Silva Neto (IB/UFRJ) for allowing the use of the optic microscope and to FAPERJ (Process E-26/171281/2006) for stereoscopic microscope with photograph camera and computer. We are also grateful to friends Allan P.M dos Santos for critical reading of this work, Rafael Boldrini for suggestions, Felipe F.F. Moreira and Leandro L. Dumas for help with English. We also thank Angela Brunner da Rocha, for logistic support and for allowing us to work on her property; the staff from Parque Nacional do Caparaó; ICMBio (Instituto Chico Mendes de Conservação da Biodiversidade) and IBAMA (Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis) for collection permission (number 1671 9-1). FAPES (Fundação de Apoio à Ciência e Tecnologia do Espírito Santo), process number 3632 7263/07, provided financial support, and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) provided fellowships to the authors MRS and JLN.