During an ecological study, carried out between 1994 and 1996 with
Streptoprocne biscutata
(Sclater) (Apodiformes: Apodidae) birds, that inhabit caves in the Quatro Barras County, State of Paraná, Southern Brazil, a new tick species of the subgenus
Multidentatus was observed. The female, male, nymph, and larva of Ixodes (Multidentatus) paranaensis n. sp., are described. Of the 12 known species of the subgenus
Multidentatus, only
I. (M.) auritulus Neumann, 1904 and
I. (M.) murreleti Cooley and Kohls, 1945 occur in the Neartic region and only
I. (M.) auritulus occurs in the Neotropical region. As such,
I. (M.) paranaensis n. sp. increases the number of species and the distribution area of the subgenus
Multidentatus in the Americas.
