[Description of two new species and infective stages of filariae from the genus Litomosoides (author's transl)].

Two new species of Litomosoides were collected from the Rio state in the vicinity of Teresopolis (Brazil). L. petteri n. sp. is the first record of this genus in the Marsupial (Marmosa cinerea), it does not display any particularly primitive feature. L. legerae n. sp. from a Cricetidae (Oxymycterus quaestor) is characterized by two lateral cephalic spines. Both species undergo their development in Bdellonyssus bacoti. Infective stages have large and segmented buccal capsule, similar to that of Rhabditids. We consider the genus Litomosoides as a primitive line, fundamentally parasite of Chiroptera, which is secundarily adapted to various Mammals (captural phenomenon).