Abstract
We give new geographical and morphological data for the Pannota mayflies of Venezuelan Guayanan uplands. Coryphorus aquilus (Coryphoridae), Amanahyphes saguassu and Tricorythopsis yucupe (Leptohyphidae) are newly recorded for Venezuela, the adults of the last species are described for the first time. Macunahyphes pemonensis sp. nov. and Macunahyphes incognitus sp. nov. (Leptohyphidae) are described from adults from Venezuela and Brazil, respectively. Both new species of Macunahyphes are very nearly related, and are characterized among other features, by the absence of forceps, and the great development of large paired projections on the styliger plate. Caenis teipunensis sp. nov. (Caenidae) is also described from adults, its diagnostic characters include: forceps apically sharp and sclerotized, and very large apophyses of the styliger sclerite. We give new locality records for Tricorythopsis volsellus, previously known from other localities in Venezuela.
References
Chacón, M.M., Pescador, M.L., Hubbard, M.D. & Segnini, S. (2009) Mayflies (Insecta: Ephemeroptera) from Venezuela. Check List, 5, 723–731.
Chacón, M.M., Pescador, M.L. & Segnini, S. (2010) The adult and redefinition of the genus Prabaetodes Lugo-Ortiz & McCafferty (Ephemeroptera: Baetidae), with description of new species from Venezuela. Aquatic Insects, 32, 143–157.
Derka, T. (2002) Massartella devani, a New Mayfly Species from Venezuela’s Highlands (Ephemeroptera: Leptophlebiidae: Atalophlebiinae). Aquatic Insects, 24, 309–316.
Derka, T., Svitok, M. & Schlögl, J. (2009) Massartella hirsuta sp. nov. (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) and new data on mayflies of Guyana Highlands. Aquatic Insects, 31, 83–94.
Dias, L.G., Salles, F.F. & Molineri, C. (2005) Macunahyphes: a new genus for Tricorythodes australis (Ephemeroptera: Leptohyphidae). Annales de Limnologie, 41, 195–201.
Dias, L.G., Molineri, C. & Ferreira, P.S.F. (2007) Ephemerelloidea (Insecta: Ephemeroptera) do Brazil. Papéis Avulsos de Zoología, 47, 213–244.
Dias, L.G., Salles, F.F. & Ferreira, P.S.F. (2008) New species of Tricorythopsis Traver (Ephemeroptera: Leptohyphidae) from northern Brazil. Studies on Neotropical Fauna and Environment, 43, 237–241.
Domínguez, E., Molineri, C., Pescador, M.L., Hubbard, M.D. & Nieto, C. (2006) Ephemeroptera of South-America. Aquatic Biodiversity in Latin America (ABLA) (Vol. 2). Pensoft, Sofia-Moscow, 646 pp.
Huber, O. (1995) Geographical and physical features. In: Steyermark, J.A., Berry, P.E. & Holst, B.K. (Eds.), Flora of the Venezuelan Guayana, Vol. 1. Missouri Botanical Garden: St. Louis & Timber Press, Oregon, pp. 1–61.
Malzacher, P. (2001) South and Central American Caenis species with rounded forceps tips (Insecta: Ephemeroptera: Caenidae). Stuttgarter Beiträge zur Naturkunde, Serie A (Biologie), 626, 1–20.
McCafferty, W.P. & Wang, T.Q. (2000) Phylogenetic systematics of the major lineages of pannote mayflies (Ephemeroptera: Pannota). Transactions of the American Entomological Society, 126, 9–101.
Molineri, C. (1999) Revision of the Genus Tricorythopsis (Ephemeroptera: Leptohyphidae) with the Description of Four New Species. Aquatic Insects, 21, 285–300.
Molineri, C. (2006) Phylogeny of the mayfly family Leptohyphidae (Insecta: Ephemeroptera) in South America. Systematic Entomology, 31, 1–18.
Molineri, C., Peters, J.G. & Zúñiga de Cardoso, M.C. (2002) A new family, Coryphoridae (Ephemeroptera: Ephemerelloidea), and description of the winged and egg stages of Coryphorus. Insecta Mundi, 15, 117–122.
Mora-Day, J., Magalhães, C., Souki, M.E. & Blanco-Belmonte, L. (2009) Macroinvertebrados acuáticos de los ríos Cuyuní y Uey, cuenca del Cuyuní, Estado Bolívar, Venezuela. In: Lasso, C.A., Señaris, J.C., Rial, A. & Flores, A.L. (Eds.), Evaluación Rápida de la Biodiversidad de los Ecosistemas Acuáticos de la Cuenca Alta del Río Cuyuní, Guayana Venezolana. Rapid Assessment Program No. 55. Conservation International, Arlington, VA USA, pp. 89–105.
Orth, K., Thomas, A., Dauta, C., Horeau, V., Brosse, S. & Ademmer, C. (2000) Les Ephémères de la Guyane Française. 1. Premier inventaire générique, a but de biosurveillance (Ephemeroptera). Ephemera, 2, 25–38.
Pescador, M.L. & Peters, W.L. (1990) Biosystematics of the Genus Massartella Lestage (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from South America. Aquatic Insects, 12, 145–160.
Peters, W.L. (1981) Coryphorus aquilus, a new genus and species of Tricorythidae from the Amazon Basin (Ephemeroptera). Aquatic Insects, 3, 209–217.
Rull, V. (2005) Biotic diversification in the Guayana Highlands: a proposal. Journal of Biogeography, 32, 921–927.
Salles, F.F. & Molineri, C. (2006) Amanahyphes saguassu: a new genus and species of Leptohyphidae (Ephemeroptera: Ephemerelloidea) from Northern Brazil. Aquatic Insects, 28, 1–12.
Segnini, S., Chacon, M.M. & Dominguez, E. (2003) Clase Insecta, orden Ephemeroptera. In: Aguilera, M., Azocar, A., Gonzalez, E. (Eds.), Diversidad Biológica en Venezuela. CONICIT-Fundación Polar, Caracas.