The present work deals with the ultrastructure of the haemocytes present in the dorsal thoracic region of larvae and pre-pupae of Melipona quadrifasciata anthidioides. This is a region of intense muscular differentiation in this phase of life of the insect. Only plasmatocytes, granulocytes, and adipohaemocytes were found in this area, all showing signs of being intermediate forms
C. Da Cruz-Landim, Departamento de Biologia e Centro de Estudos de Insetos Sociais, Instituto de Biocincias de Rio Claro, UNESP, 13506-900 Rio Claro, SP, Brasil.