Discipline: Veterinary Medicine
Three trematode species belonging to the families Dicrocoeliidae and Eumegacetidae are herein reported from Philippine wild birds. Brachylecithum (Brachylecithoides) microfiliforme is described and illustrated as a new species based on specimens from Parus elegans Lesson, 1831 (elegant titmouse) (Paridae) in Batangas and Laguna. It is characterized by the tiny size and filiform shape, the testes and ovary close together in tandem position and sometimes overlapping, the anterior testes close to the acetabulum with borders opposing, and the vitellaria confluent medially in their posterior limits. It is differentiated from closely related species. Athesmia heterolecithodes (Braun, 1899) and Posthovitellum sabahense Fischthal & Kuntz, 1973 are described and illustrated from Gallirallus striatus striatus (slaty breasted rail) (Rallidae) and Limnocryptes minimus (jack snipe) (Scolopacidae) both in Pampanga; and from Collocalia esculenta marginata Salvadori, 1882 (glossy swiflet) (Apodidae) in Batangas, respectively. Both genera and species are reported for the first time in the Philippines constituting new locality record. The occurrence of Posthovitellum sabahense in Collocalia esculenta marginata also constitutes a new host record for the species.