São descritas as espécies Culicoides (Hoffmania) saintjusti sp. n. e Culicoides (Oecacta) macieli sp. n. (localidade tipo; Brasil, Rio de janeiro, Jacarepaguá, Pau da Fome) e discutidas sua posição taxionômica e suas relações com espécies afins.

Culicoides (Hoffmania) saintjusti sp. n. and (Oecacta) macieli sp. n. (Type-locality: Brazil, Rio de Janeiro, Jacarepaguá, Pau da Fome) are described and its taxonomic position and relationships with others subgeneric species are discussed.

Através de um lote de ninfas e adultos de Rhodnius, proveniente de Mira Estrela, Estado de São Paulo, assinalamos pela p rim e ira vez, a presença de Rhodnius prolixus nesse Estado.

Published records dealing with the distribution of Rhodnius prolixus Stal, 1859 in Brazil demonstrated the absence of this species in the State of São Paulo. Insects of the genus Rhodnius Stal, 1859 collected by Corrêa in the State of São Paulo and considered by the author previously as R. prolixus and there- after as Rhodnius sp. have been shown by Lent to be R. neglectus. Morphological characters used to distinguish these two species by Lent & Jurberg helpeld to recognize the presence of Rhodnius prolixus in a group of R. neglectus collected by us in Mira Estrêla in the State of São Paulo. Large colonies of these two species have been established in the Laboratory of Insect Biology and Vector Control.

Studying thirteen speciemens of the genus Ormia Robineau-Desvoidy, 1830, and one of Euphasiopteryx Towsend, 1915, the author describes six new species: Ormia mendesi sp. n., Ormia lenkoi sp. n., Ormia carreirai sp. n., Ormia crespoi sp. n., Ormia wygodzinskyi sp. n., and Euphasiopteryx lenti sp. n. from Brasil and Argentina. The importance of the ocelli as a generic character, as stated by Towsend (1936) is discussed based on the absence of ocelli in Ormia mendesi sp. n. and Ormia crespoi sp. n. and its presence in Euphasiopteryx lenti sp. n. A key for the determination of Ormia species is presented based chiefly on the males external morphological characters.

This is a contribution to the knowledge of the Tribu Ormiini in wich the author presents redescriptions of euphasiopteryx depleta (Wiedemann, 1830), Euphasiopteryx ochracea (Bigot, 1888) and describes a new species: Euphasiopteryx rosenoi sp. n. from Brazil.

The present paper is a contribution to the knowledge of the genus Ormiophasia Townsend, 1919, based mainly on the male genital characters. Five new species are described from Brazil.

The author redescribes two species of the genus Ormia: Ormia bilimekii Brauer et Bergenstamm, 1889 and ormia lineifrons Sabrosky, 1953, Brasil. Two new species, Ormia rachoui sp. n. from Corcovado, Estado da Guanabara and Ormia lopesi sp. n. from Angra dos Reis, Estado do Rio de Janeiro, Brasil, are also described.