The levis and ferruginea groups of Orthemis are redefined. Six new species of Orthemis are described: O. aciculata sp. nov. (♂ holotype: Surinam, Para Dist., road near forest, Zanderij I (5°32′ N, 55°10′ W), 17 January 1957, leg. J. Belle [RMNH]), O. celata sp. nov. (♂ holotype: Brazil, Pará State, Rio Gurupí, Canindé (0°30′57′ ′…
The larva of the genus Nesolestes is described and figured for the first time. Specimens were found in small brooklets in littoral swamp forest in south-eastern Madagascar. The larva is compared with the two other Madagascan genera of Megapodagrionidae, Protolestes and Tatocnemis, and diagnostic characters are given. The caudal lamellae are held in a horizontal…
Five new species of the levis-group of Orthemis, O. cinnamomea (holotype ♂ in USNM: Peru, Madre de Dios Department, Explorer’s Inn on Río Tambopata, 12°50′S, 69°17′W, 300 m, 23 vii 2002, leg. D. Paulson & N. Smith), O. coracina (holotype ♂ in USNM: Ecuador, Sucumbios Province, Limoncocha, 00°24′S, 76°36′W, 300 m, 23 vii 1977, leg.
In this synopsis all 50 species of the primarily neotropical genus Telebasis are keyed, diagnosed, and illustrated. Helveciagrion is considered a junior subjective synonym of Telebasis, T. coccinata a junior subjective synonym of T. coccinea, and T. limoncocha a junior subjective synonym of T. griffinii. Six new species from South America are described: T. carvalhoi…
A new species (holotype ♂ in MLP: Argentina, Formosa province, Parque Nacional Río Pilcomayo, Laguna Blanca, marshes next to pond, 25°10′29″S, 58°07′44″W, 74 m a.s.l., 16/17 ii 2008, leg. NvE, RWG) is described, diagnosed and illustrated, and a key, diagnostic illustrations, and distribution maps are provided for the three species of the genus occurring in…
Based on examination of the syntype female of Telagrion fulvellum which we designate as lectotype, and its comparison with additional male and female specimens from Peru, this species is assigned to a new genus, Dolonagrion, and both sexes are redescribed, diagnosed, and illustrated.
Examination of diagnostic features for all known species of Acanthagrion and Oxyagrion shows color pattern alone not to be a reliable diagnostic character. Both genera are redefined based on morphological characters, and some color pattern characters which further aid in their diagnoses. A preliminary phylogenetic analysis indicates both genera are monophyletic. They are distinguished from…
Supplementary specimens of the monotypic genus Kalocora show that diagnostic characters employed by Kennedy, based on the original description of Cora aurea are too variable, and therefore Kalocora is here relegated to synonymy under Cora.
The larva of Somatochlora margarita is described from a specimen reared from the egg to the final stadium. The larva, previously unknown, is morphologically similar to the larvae of S. calverti, S. filosa, S. ozarkensis, and S. provocans. Combinations of diagnostic characters are given for distinguishing these species. Growth of this species is discussed with…
Gomphomacromia mexicana is shown to be a junior synonym of G. chilensis based on a comparison of the holotype male with the original description of G. chilensis and specimens identified as that species from Chile. Examination of a large series of specimens from central and southern Chile and Argentina identified both as G. paradoxa and…