Philophthalmidae is a family of trematodes in the order Plagiorchiida.
Genera Cloacitrema Yamaguti, 1935Yamaguti, S. (1935). Studies on the helminth fauna of Japan. Part 5. Trematodes of birds. III. Japanese Journal of Zoology, 6, 159–182. Echinostephilla Lebour, 1909Lebour M. V. (1909). Trematodes of the Northumberland Coast, No. III. A Preliminary Note on Echinostephilla virgula, a New Trematode in the Turnstone. Transactions of the Natural History Society of Northumberland, Durham and Newcastle-upon-Tyne (New Series), 3(2), 440–445. Parorchis Nicoll, 1907Nicoll, W. (1907). Parorchis acanthus, the type of a new genus of trematodes. Quarterly Journal of Microscopical Science, 51, 345–355. Philophthalmus Looss, 1899 Philophthalmus gralli Mathis & Leger, 1910 Philophthalmus lacrimosus Braun, 1902 Pittacium Szidat, 1939Szidat, L. (1939). Beiträge zum Aufbau eines natürlichen Systems dur Trematoden. I. Die Entwicklung von Echinocercaria choanophila u. Szidat zu Cathaemasia hians und die Ableitung der Fasciolidae von den Echinostomidae. Zeitschrift für Parasitenkunde, 11, 239–283. Pygorchis Looss, 1899 Skrjabinovermis Belopolskaya, 1954Belopol'skaya, M. M. (1954). Helminth fauna of birds of Sudzukhinsk Reserve (Primor'e). Uchenye Zapiski Leningradskogo Gosudarstvennogo Universiteta, 172, 3–34.
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