JOHNPEARSONIA GEN-NOV AND JOHNPEARSONIINAE SUBF-NOV (MOLINEOIDEA, NEMATODA) FROM BUFO-MARINUS, WITH COMMENTS ON THE PRIMITIVE TRICHOSTRONGYLE PARASITES OF AMPHIBIANS AND REPTILES

A new genus is proposed in the family Amphibiophilidae based on specim ens parasitic in Bufo marinus from Australia : Johnpersonia. The speci es Amphibiophilus egerniae Johnston and Mawson, 1947, parasite of Aust ralian lizard, is classified in this genus. The only genus that it is close to is Batrachonema Yuen, 1965, parasitic in malayian Ranidae and peruvian Bufonidae. The two genera were classified in a new subfamily : the Johnpearsoniinea mainly characterised with a bursa of the 1-3-1 type. Johnpearsonia is differentiated from Batrachonema in that the f emale is monodelphic and the dorsal lobe of the caudal bursa is not re duced. An analysis of the relationships between the other primitive ge nera of Trichostrongylina parasitic in poikilothermic animals is done.