The larva of Miathyria simplex (Rambur, 1842) is described, illustrated and compared to that of M. marcella (Selys, 1857). A key for identification of the South American Libellulidae larvae, wich show dorsal spines on abdominal segments III to VIII, is presented.
Miathyria simplex; Libellulidae; Odonata; neotropical; larvae; description