Abstract
The larva of Palaemnema brasiliensis Machado, 2009 is described and illustrated based on last-instar larvae and exuviae of reared larvae collected in a blackwater stream in Barcelos and Presidente Figueiredo municipalities, Amazonas state, Brazil. The larva of P. brasiliensis can be distinguished from the two South American species of the genus with described larvae (P. clementia Selys and P. mutans Calvert), mainly by presence of a single obtuse cusp on the labial palp, the presence and configuration of setae in the caudal lamellae, and the proportional length of terminal filaments of the caudal lamellae. The family is recorded here for the first time in Brazilian state of Amazonas.
References
Amaya-Vallejo, V. & Novelo-Gutiérrez, R. (2011) The larva of Palaemnema mutans Calvert, 1931 (Odonata: Platystictidae). Zootaxa, 3049, 59–63.
Calvert, P.P. (1903) Odonata. In: Godman, F.D. & Salvin, O. (Eds.), Biologia Centrali-Americana: Neuroptera. Vol. 50. 1892–1908. Porter & Dulaü Co., London, pp. 129–144.
Calvert, P.P. (1931). The generic characters and the species of Palaemnema (Odonata: Agrionidae). Transactions of the American Entomological Society, 57, 1–111.
De Marmels, J. (2007) Thirteen new Zygoptera larvae from Venezuela (Calopterygidae, Polythoridae, Pseudostigmatidae, Platystictidae, Protoneuridae, Coenagrionidae). Odonatologica, 36 (1), 27–51.
Garrison, R.W., von Ellenrieder, N. & Louton, J.A. (2010) Damselfly genera of the New World. An Illustrated and Annotated Key to the Zygoptera. The Johns Hopkins University Press, Baltimore, XIV+490 pp.
Machado, A.B.M. (2009) Palaemnema brasiliensis spec. nov., first Platystictidae record from Brazil (Zygoptera). Odonatologica, 38 (3), 255–260.
Novelo-Gutiérrez, R. (2003) The Larva of Palaemnema domina Calvert, 1903 (Odonata: Platystictidae). Transactions of the American Entomological Society, 129 (1), 71–75.
Novelo-Gutiérrez, R. & González-Soriano, E. (1986) Descripción de las náyades de Palaemnema desiderata Selys y Palaemnema paulitoyaca Calvert (Odonata: Platystictidae). Folia Entomologica Mexicana, 67, 13–24.
Selys-Longchamps, M.E. de (1886) Revision du Synopsis des Agrionines. Premiére partie comprenant les légions Pseudostigma- Podagrion - Platycnemis et Protonevra. Mémoires couronnés et autres Mémoires, 38 (4), IV+1–233.
Watson, M.C. (1956) The utilization of mandibular armature in taxonomic studies of anisopterous nymphs. Transactions of the American Entomological Society, 81, 155–202.
Westfall, M.J. Jr. & May, M.L. (2006) Damselflies of North America. Revised Edition. Scientific Publishers, Gainesville, 502 pp.