Macroanatomia, microanatomia e histologia dos sistemas reprodutor e digestivo de Thaumastus (Thaumastus) Taunaisii (Ferussac, 1822), T. (T.) Magnificus (Grateloup, 1839) e T. (T.) Achilles (Pfeiffer, 1852) (Mollusca, Gastropoda, Stylommatophora, Bulimulidae)

Abstract

Studies were carried out in order to determine the differences in the reproductive and digestive systems of the various species of Thaumastus Martens, 1860, captured in forests and shoals of Rio de Janeiro State. The terminology used here derives from studies based on microanatomy, histology, functional anatomy, as well as from bibliographical references. According to the macroanatomy of their reproductive system, the species which were studied can be classified together which members of the Bulimulidae, due to the absence of appendices and to the fact that there is a little variation in their external morphology. The microanatomy and the histology of the systems which were studied showed differences that together with the studies of the shell, radula and jaw made it possible to identify and to characterize Thaumastus (Thaumastus) taunaisii (Férussac, 1822), Thaumastus (Thaumastus) magnificus (Grateloup, 1839) and Thaumastus (Thaumastus) achilles (Pfeiffer, 1852).