The type specimens of Dimeragrion secundum Needham. Heteragrion romani Sjdstedt. H. silvarum Sjostedt and H. speciosum Sjdstedt are discussed and figured. It is suggested, that H. romani Sjdstedt is a synonym of H. icterops Selys. and H. speciosum Sjdstedt a synonym of H. flavidorsum Calvert. — Heteragrion pemon sp. n. (holotype male: Venezuela, Bolivar, Guayaraca, Auyantepuy, 1020 m. 16-IV-I956; Facultad de Agronomia, Maracay) and Oxystigma caerulans sp. n. (holotype male: Venezuela, Bolivar, km 125, road El Dorado-Santa Elena de Dairen, 1280 m, 20-22- -V-I985; Facultad de Agronomia, Maracay) are described and illustrated. Figures and a description of the ultimate instar male exuviae, associated with the latter species by supposition, are also presented.


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Societas Internationalis Odonatologica

J. De Marmels. (1987). On the type specimens of some neotropical Megapodagrionidae, with a description of Heteragrion pemon spec. nov. and Oxystigma caerulans spec. nov. from venezuela (Zygoptera). Odonatologica, 16(3), 225–238.