Descriptions of the morphological changes within each stage, of the molting and hatching processes and of the quiescent states of Amblyseius citrifolius (Denmark &; Muma) were given. The larva emerged, posterior first, from the narrow end of the egg. Hatching took ca. 8 min. The duration of the ecdysis (ca. 20 to 30 min) was approximately the same for all the stages. Quiescent states were characterized by the extended, apposed palpi, by the protruded gnathosoma, by the pale, shiny coloration of the body and by a typical response to a contact stimulus. Duration of the quiescent state ranged from ca. 9.7 to 11.3 hours.
