Four new species of Calvertagrion St. Quentin from South America (Odonata: Coenagrionidae)

摘要

Four new species of Calvertagrion are described from the upper Amazon region of South America east of the Andes foothills, namely C. albatum sp. nov. (holotype male, Madre de Dios Department, Peru), C. charis sp. nov. (holotype male, Loreto Department, Peru), C. declivatum sp. nov. (holotype male, Santa Cruz Department, Bolivia), and C. mauffrayi sp. nov. (holotype male, Orellana Province, Ecuador). These additions bring the total number of species in the genus to five. Differences in thoracic and abdominal color pattern, morphology of the pronotum and male appendages are presented as characters in a key separating the known species. The male genital ligula is remarkably uniform within the genus, which is unusual within coenagrionid genera with multiple species.