Except for four species of the Mertensinematinae (Molineoidea) not considered in this work, the Trichostrongylina parasitic in amphibians and reptiles, comprising 15 genera and 105 species, are reviewed. The morphological characteristics of each species are analysed. The most important characteristics are provided by the disposition of the caudal bursal rays, the morphology of the synlophe (at the oesophago-intestinal junction and mid-body level) and by the anatomy of the spicules.
Summ ar y : Oswaldocruzia (Trichostrongyloidea) parasites of amphibians from the collections of the Paris Museum. The Oswaldocruzia parasites of the intestines of amphibians in France are closely related and had been considered as one species, O. filiformis. However, a second species, O. bialata, is recognized by some authors because it has wider cervical alae. We found O. bialata to be present in Central Europe but not in France. An analysis of the synlophe indicates that a least four different species (therefore two new species) can be recognized, mainly by the morphology and the number of the crests corresponding to the cervical alae in front of the lateral fields. The basic shape of the spicules in the genus is constant and we propose the following nomenclature: the spicule is divided into 3 main branches, namely the externo-lateral branch or « blade », which divides into several processes, the interno-ventral branch or « fork », which splits into 2 slender branches and the interno dorsal branch or « shoe ». According to the morphological characteristics of the cuticular alae, the species can be distinguished as following: A. O. bialata (Molin, 1861) has semi-spherical, inflated cervical alae and no crests in oesophagal region. B. O. filiformis (Goeze, 1782) has cervical alae with three very small crests and has crests in oesophageal region. C. O. duboisi n. sp. has cervical alae with one big triangular and two small crests and has crests in oesophageal region. D. O. guyetanti n. sp. has triangular, inflated cervical alae with an apical spine and has only dorsal crests in oephageal region. With few exceptions, species of Oswaldocruzia from western Europe occur with low prevalence and low intensity. The names of the hosts that were written on the original labels and included with the parasites do not correspond to the current hostnomenclature. It is therefore difficult to determine both their pre cise geographical distribution and host-range.
A new genus is proposed in the family Amphibiophilidae based on specimens parasitic in Bufo marinus from Australia : Johnpersonia. The species Amphibiophilus egerniae Johnston and Mawson, 1947, parasite of Australian lizard, is classified in this genus. The only genus that it is close to is Batrachonema Yuen, 1965, parasi tic in malayian Ranidae and peruvian Bufonidae. The two genera were classified in a new subfamily : the Johnpearsoniinae mainly characterised with a bursa of the 1-3-1 type. Johnpearsonia is dif ferentiated from Batrachonema in that the female is monodelphic and the dorsal lobe of the caudal bursa is not reduced. An analy sis of the relationships between the other primitive genera of Trichostrongylina parasitic in poikilothermic animals is done.
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