Aspectos da biologia, morfologia e ontogenia da larva de Coryphaeschna perrensi (McLachlan, 1887) (Insecta, Odonata, Aeshnidae), com algumas considerações filogenéticas

Abstract

Aspects of the biology, morphology and ontogeny of the larva of Coryphaeschna perrensi (McLachlan, 1887) (Odonata, Aeshnidae), with some phylogenetic considerations. The larval cycle of the dragonfly Coryphaeschna perrensi was studied based mainly on material collected monthly during two years (1987- 1988) in a sand dune swamp located in Maricá, Rio de Janeiro State, Brazil (22º56'S, 42° 50'W). The regular larval development averaged approximately 10 months in the laboratory, having 15 instars (except the prolarva). The last two instars may vary in duration and be enlarged probably to fit the emergence. The flight period is concentrated in seven months, with the peak in February. The morphology of the ultimate instar larva is...