Étude morphologique des larves de Enallagma vernale Gloyd, élevées en laboratoire (Zygoptera; Coenagrionidae)

E. vernale larvae reared under laboratory conditions show 3 different growing types, characterized by 12, 13 and 14 instars, respectively. This paper is concerned with the morphology of larval forms, for individuals of the 12- instar type; also included is a comparative study of the variability of major morphological structures for the 3 growing types. Finally, a synthesis is presented of the authors’ findings on morphology and growth of larval forms of this sp.