Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-06T07:08:31.539Z Has data issue: false hasContentIssue false

The genus Rivudiva Lugo-Ortiz and McCafferty (Ephemeroptera: Baetidae): First generic description of adults, new combinations, and notes on the nymphs

Published online by Cambridge University Press:  17 October 2009

Frederico Falcao Salles*
Affiliation:
Universidade Federal do Espírito Santo, Centro Universitário Norte do Espírito Santo, Departamento de Ciências da Saúde, Biológicas e Agrárias, São Mateus, Espírito Santo, 29933-415, Brazil
Jeane Marcelle Cavalcante do Nascimento
Affiliation:
Universidade Federal do Espírito Santo, Centro Universitário Norte do Espírito Santo, Departamento de Ciências da Saúde, Biológicas e Agrárias, São Mateus, Espírito Santo, 29933-415, Brazil
Get access

Abstract

In the present paper, based on the rearing of nymphs in the field, we present for the first time the description of the adult stage of Rivudiva Lugo-Ortiz and McCafferty and of its type species, R. minnatena Lugo-Ortiz and McCafferty. Adults of Rivudiva can be distinguished from the other genera of Baetidae by the following combination of characters: (1) hindwings present or absent, when present with two longitudinal veins and with costal projection pointed, placed in the basal fourth of anterior margin; (2) forceps three-segmented, segment III long, about 2× as long as wide; (3) distal margin of subgenital plate with small pointed projection. Besides that, R. coveloae (Traver, 1971 [Proc. Entomol. Soc. Washington, 73, 58–63]), new combination, and R. venezuelensis (Traver, 1943 [Bol. Entomol. Venezolana, 2, 79–98]), new combination, are proposed based on the characteristics listed above, specially the distal margin of subgenital plate with a small pointed projection. Comments on the biology of the nymphs are also provided.

Type
Research Article
Copyright
© EDP Sciences, 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Domínguez E., Molineri C., Pescador M.L., Hubbard D.M. and Nieto C., 2006. Ephemeroptera of South America, Aquatic Biodiversity of Latin America (ABLA Series), Sofia-Moscow, 646 p.
Lugo-Ortiz, C.R. and McCafferty, W.P., 1998. Five new genera of Baetidae (Insecta: Ephemeroptera) from South America. Ann. Limnol. - Int. J. Lim. , 34, 5773. CrossRef
Lugo-Ortiz, C.R. and McCafferty, W.P., 1999. Revision of South American species of Baetidae (Ephemeroptera) previously placed in Baetis Leach and Pseudocloeon Klapalek. Ann. Limnol. - Int. J. Lim. , 35, 257262. CrossRef
Orth, K., Thomas, A., Dauta, C., Horeau, V., Brosse, S. and Ademmer, C., 2000. Les Éphémères de la Guyane Française. 1. Premier inventaire générique, à but de biosurveillance [Ephemeroptera]. Ephemera , 2, 2538.
Salles, F.F., Da-Silva, E.R., Serrão, J.E. and Francischetti, C.N., 2004. Baetidae (Ephemeroptera) na região sudeste do Brasil: novos registros e chave para os gêneros no estágio ninfal. Neotropical Entomol. , 33, 725735. CrossRef
Traver, J.R., 1943. New Venezuelan mayflies. Bol. Entomol. Venezolana , 2, 7998.
Traver, J.R., 1971. Four new species of Neotropical Baetis (Ephemeroptera: Baetidae). Proc. Entomol. Soc. Washington , 73, 5863.