Taxonomy of the South American genus Phyllopetalia (Odonata: Austropetaliidae)

This synopsis of adult Phyllopetalia includes the synonymy of four genera (Phyllopetalia senior subjective synonym of Rheopetalia, Odontopetalia, Eurypetalia and Ophiopetalia), four species and one subspecies (P. apicalis senior subjective synonym of Rheopetalia rex and R. apicalis decorata, and P. pudu senior subjective synonym of Ophiopetalia araucana, O. auregaster and O. Diana). P. excrescens and…

A synopsis of the genus Triacanthagyna (Odonata: Aeshnidae)

This synopsis of adult Triacanthagyna includes the revalidation of two species thought to be synonyms (T. nympha and T. obscuripennis), the description of a new species (T. williamsoni; type locality: Peru, Tingo María), keys to both sexes, illustrations of diagnostic characters, and distribution maps of all species. A phylogenetic assessment of the nine species is…

The subfamily Platycnemidinae (Zygoptera: Platycnemididae) in Thailand, with description of the final stadium larva of Copera chantaburii Asahina, 1984

Within the damselfly subfamily Platycnemidinae, eight species are currently recognized in South-East Asia. The final stadium larvae of only three of them have been so far described. The final stadium larva of Copera chantaburii is described and illustrated for the first time, based on reared specimens, and new provincial records both of larvae and adults…

The levis group of Orthemis revisited: a synopsis including a synonymy and description of six new species of Orthemis from South America (Odonata: Libellulidae)

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 Nesolestes sp. from Madagascar (Odonata: Megapodagrionidae)

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 Orthemis from South America (Odonata: Libellulidae)

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.