KRITSKYIA-MORAVECI N-G, N-SP (MONOGENEA, DACTYLOGYRIDAE) FROM THE URINARY-BLADDER AND URETERS OF RHAMDIA-QUELEN (QUOY AND GAIMARD, 1824) (PISCES, PIMELODIDAE) IN BRAZIL

Kritskyia n. g. is proposed for K. moraveci n. sp. from the urinary bladder and ureters of Rhamdia quelen (Quoy & Gaimard, 1824), a pimelodid fish from the reservoir of the Hydroelectric Power Station of "Passo Fundo", Rio Grande do Sul State, Brazil. The new genus is most closely related to Acolpenteron Fischthal & Allison, 1940, from which it differs by having a male copulatory complex composed of a coiled cirrus and a bipartite accessory piece, a sinistral vagina, and an antero-ventrally concave haptor which possesses 14 ventrally directed marginal hooks, but lacks an anterior rim and 4A hooks. © 1990 Kluwer Academic Publishers.