The larva of Diastatops obscura (Fabricius, 1775) is described and figured based on exuviae of last instar of reared specimes collected on still waters in São João river, Silva Jardim (22º38' - 42º18'), Rio de Janeiro, Brazil. The relationship among the larva of D. obscura and larvae of Celithemis are discussed.
Odonata; Libellulidae; Diastatops obscura; taxonomy larva