A Discussion of the Taxonomy of the Family Plagiorchiidae Luhe, 1901, and Related Trematodes

Deurithitrema gingae n.g., n.sp. (Digenea: Plagiorchioidea) from the kidneys of a salt-water crocodile (Crocodylus porosus Schneider) from Australia

“…That there are taxonomic difficulties with the group can clearly be seen by a comparison of the classifications proposed by Skrjabin (1958), by Odening (1964) and by Yamaguti (1971) together with comments by Gupta & Sharma (1973). On the basis of adult morphology, Deurithitrema appears most closely allied with the group of genera placed by Yamaguti (1971) within the families Macroderoididae McMullen, 1937and Plagiorchiidae (Ltihe, 1901) Ward, 1917. These two families are separated by details of cercarial structure and especially the form of the excretory bladder (generally club-or I-shaped in the former; Y-shaped in the latter).…”

“…For example, McMullen (1935) demonstrated that the cercaria of Macroderoides typicus (Winfield, 1929) Van Cleave & Mueller, 1932 has an elongate I-shaped bladder which becomes short and bag-shaped in the adult. This led McMullen (1937) to transfer Macroderoides Pearse, 1924 from the Allocreadiidae to the Macroderoididae. The bladder in Deurithitrema is very small and difficult to compare with bladders of genera within the Plagiorchiidae and Macroderoididae.…”

Contribution à l’étude de Xiphidiocercaria polyxena E. Brumpt, 1944 (Trématodes), parasite de Planorbis corneus (L.)

“…-On a pu montrer dans certains cas qu'un groupe donné de cercaires donne des adultes d'une même famille. Selon Mac Mullen (1937), les Plagiorchioïdea R.-Ph. Dollfus (1929) sont donnés par des Xiphidiocercaires, et, de plus, les cercaires de la section Polyadena sont des stades larvaires de Plagiorchiidae Lühe 1901.…”

A New Species of Triganodistomum (Trematoda: Lissorchiidae) from the Sacramento Sucker, Catostomus occidentalis Ayres

“…McMullen (1937) revised the taxonomy of this family and raised the LISSORCHIINAE to family rank. In addition to other parasites found, five of these fish carried from one to thirteen flukes.…”