[Description and life history of Tetrameres (Tetrameres) cardinalis sp. n (author's transl)].

A new species of Spirurid Nematode Tetrameres (Tetrameres) cardinalis n. sp. parasite of a Cardinal: Richmondia cardinalis is described. This Tetrameres shows primitive cephalic structures, 33 to 43 pairs of somatic spines in male, spicules of unequal length: left 365-440, right 65-350 mu, mature eggs with tufts of polar filaments. The life-cycle of this Spirurid has been obtained experimentally with the grass-hopper Locusta migratoria as an intermediate host. Its larval development is characterized by the quickness of organogenesis, the stability of cephalic structures from third stage to adult stage, the small size (800 mu) of infective larva, the localization of larva in the insect fat tissue.