The larva of Neoneura ethela Williamson, 1917 (Odonata: Protoneuridae) (original) (raw)
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Zootaxa
The larva and pupa of Anastomoneura guahybae Huamantinco & Nessimian from tributaries of the Rio Aiuruoca, Minas Gerais, Brazil, are described, illustrated and compared with other Odontoceridae. The larva is characterized by a reduced lateral carina on the head, a membranous metanotum, a distinctive pattern of ventral setae on abdominal segment I and by the presence of a conspicuous dorsal spine on the anal claw. The larva of Anastomoneura is similar to those of the neartic genera Nerophilus and Namamyia principally by the undivided mesonotal plates, and by the position and form of setal areas on the metanotum. The pupa is very similar to other odontocerids. The specimens were collected from sandy substrates in small order streams. Animal parts, plant fragments and detritus were observed in the larval gut contents. The genus Anastomoneura is for the first time recorded from the State of São Paulo, Brazil. Keys to larvae and pupae of known Neotropical genera of Odontoceridae are pres...
The larva and pupa of Anastomoneura guahybae Huamantinco & Nessimian from tributaries of the Rio Aiuruoca, Minas Gerais, Brazil, are described, illustrated and compared with other Odontoceridae. The larva is characterized by a reduced lateral carina on the head, a membranous metanotum, a distinctive pattern of ventral setae on abdominal segment I and by the presence of a conspicuous dorsal spine on the anal claw. The larva of Anastomoneura is similar to those of the neartic genera Nerophilus and Namamyia principally by the undivided mesonotal plates, and by the position and form of setal areas on the metanotum. The pupa is very similar to other odontocerids. The specimens were collected from sandy substrates in small order streams. Animal parts, plant fragments and detritus were observed in the larval gut contents. The genus Anastomoneura is for the first time recorded from the State of São Paulo, Brazil. Keys to larvae and pupae of known Neotropical genera of Odontoceridae are presented.
Zootaxa, 2008
A new genus, Drepanoneura (type species Drepanoneura loutoni sp. nov.), is described to include Epipleoneura letitia Donnelly, Protoneura peruviensis Fraser, and six new congeneric species from South America: D. donnellyi, D. flinti, D. janirae, D. loutoni, D. muzoni, and D. tennesseni. Drepanoneura is similar to Epipleoneura and Epipotoneura in venational characters, but differs from them in morphology of male cercus, genital ligula, female pronotum, and epiproct. A new species of Epipleoneura from Venezuela, E. demarmelsi, and a new species of Epipotoneura from Brazil, E. machadoi, are described, and diagnostic illustrations for the poorly known Epipotoneura nehalennia Williamson are also presented. A generic characterization, diagnoses, and keys for species of Drepanoneura are provided, as well as diagnostic illustrations and distribution maps for all involved species.
The ultimate larval stadia of Macrothemis declivata, M. hemichlora, M. imitans imitans and M. tenuis are described and illustrated for the first time, based on material from Brazil. Six of the most used keys to larvae of libellulid genera of the New World are evaluated with respect to the correct identification of the 27 known larvae of Macrothemis, Brechmorhoga, Gynothemis and Scapanea. Macrothemis species were wrongly identified in more than 50% of the trials, being keyed as Brechmorhoga, Gynothemis and even Dythemis. The genus Macrothemis and its relatives need to be revaluated and adequately diagnosed based on larvae. A key to the 14 known larvae of species currently included in Macrothemis is presented.
The female of Epipleoneura spatulata Rácenis, 1960 (Odonata: Protoneurinae)
Zootaxa, 2020
Here we describe the hitherto unknown female of Epipleoneura spatulata Rácenis, 1960 and present a table of characters (all illustrated) to distinguish it from other known congeneric females. We suggest that the main diagnostic character of the female of E. spatulata is the shape of posterior margin of prothorax, which is flat medially with smoothly curved erect lateral projections.
Occurence of oligochaeta living on larvae of odonata from ipeúna (São Paulo state, Brazil)
Biota Neotropica, 2004
The occurrence of oligochaetes species living on larvae of Odonata is reported for the first time. There were found Nais variabilis (Piguet, 1906) (Oligochaeta: Naididae) and Chaetogaster diastrophus (Gruithuisen, 1828) (Oligochaeta: Naididae) living on Elasmothemis cannacrioides (Calvert, 1906) (Anisoptera: Libellulidae) and on Mnesarete (Cowley, 1934) (Zygoptera: Calopterygidae).