Leucocytozoids of Seven Old World passeriform families

Leucocytozoids of the primarily Old World passeriform families Corvidae, Hirundinidae, Irenidae, Oriolidae, Paradoxornithidae, Paridae and Pittidae are reviewed. Leucocytozoon sakharoffi Sambon 1908 of the Corvidae is re-described and L. berestneffi Sambon 1908, L. laverani Franca 1912 and L. zuccarelli Leger 1913 are synonymized with it. Leucocytozoon chloropsidis de Mello 1935 of the Irenidae and L. majoris (Laveran 1902) Coatney 1937 are re-described for the first time since their original descriptions. Leucocytozoon whitworthi, L. irenae, L. oriolis, L. bishopi and L. pittae are new species described from the Hirundinidae, Irenidae, Oriolidae, Paradoxornithidae and Pittidae respectively.