A new species, Peristerophila falcophila Skoracki and Hromada sp. nov. is described from three avian hosts of the genus Falco: F. peregrinus Tunstall, 1771 from Kenya, Germany and Nepal, F. cherrug Gray, 1834 from Romania, and F. sparverius Linnaeus, 1758 from Colombia. This new species differs from closely related Peristerophila accipitridicus Skoracki et al. 2010 as follow: the propodonotal shield is reduced in the posterior part, but not divided into three separate shield (vs. divided into three punctate and saber-like sclerites in P. accipitridicus); the length ratio of setae ve:si is 1:1.6-1.8 (vs. 1:2-2.8); fan-like setae p' and p" of legs III and IV are with 10 tines (vs. 19-20); and the length of setae e2 is 145-155 (vs. 185-215). Additionally, the key to all species of the genus Peristerophila is constructed and the host-parasite relationships are briefly discussed.
Keywords: Acari; Syringophilidae; biodiversity, birds; ectoparasites, Falconiformes; quill mites.