Inventário de odonata imaturo na ilha de Cotijuba-Belém - Pará.

Abstract

The insects of the Order Odonata, comprise about 5,300 species widely distributed in the world and about 640 species recorded in Brazil. Dragonflies have richly innervated wings, strong chewing mouthparts and large compound eyes. Development is hemimetabolic, with the immature stages being aquatic and the adults winged and terrestrial. This order has two suborders: Zygoptera and Anisoptera. The present work aims to survey the species of Odonata at Cotijuba Island - Belém-PA, having been carried out initially at Praia da Saudade and later at Praia do Vai-quem-quer, given the potential of these insects, which are voracious predators throughout their lives, as biological controllers. Immature and adult individuals were collected bimonthly, and the immature individuals were kept alive in the laboratory and fed with Culicidae larvae and pupae, and the adults were mounted for further identification. The collection points were chosen because they were potentially favorable locations for the maintenance of these insects. So far, the results obtained were similar to those found in Praia da Saudade, with the occurrence of the Family Libeliulidae, with the genera Micrathyria sp., Erythemis sp., Erythrodiplax sp. and Orthemis sp. In the Coenagrionidae Family, only the genus Leptagrion sp. was recorded, with prevalence of the Libeliulidae Family among the specimens collected. The identifications are still in progress and the information obtained to date has demonstrated the potential age of odonate specimens as biological controllers under laboratory conditions.