The Platycnemididae are a family of damselflies. They are known commonly as white-legged damselflies. There are over 400 species native to the Old World. The family is divided into several subfamilies.
Mesocnemis is a genus of African damselflies in the white-legged damselfly family (Platycnemididae). They are commonly known as Riverjacks.
Platycnemis nyansana is a species of damselfly in the family Platycnemididae. It is found in the Democratic Republic of the Congo and Uganda. Its natural habitats are subtropical or tropical moist lowland forests and freshwater marshes.
Calicnemia is a genus of damselflies in the family Platycnemididae. There are over 20 species distributed in Southeast Asia, China, India, and Pakistan.
Copera is a genus of damselflies in the family Platycnemididae. They are distributed in Asia, especially Southeast Asia.
Allocnemidinae is a subfamily of damselflies in the family Platycnemididae. There are 5 genera in Allocnemidinae, found in Africa and Arabia.