Rhipicephalus tetracornus Kitaoka and Suzuki, 1983

Petney, Trevor N., Boulanger, Nathalie, Saijuntha, Weerachai, Chitimia-Dobler, Lidia, Pfeffer, Martin, Eamudomkarn, Chatanun, Andrews, Ross H., Ahamad, Mariana, Putthasorn, Noppadon, Muders, Senta V., Petney, David A. & Robbins, Richard G., 2019, Ticks (Argasidae, Ixodidae) and tick-borne diseases of continental Southeast Asia, Zootaxa 4558 (1), pp. 1-89 : 36

Rhipicephalus tetracornus Kitaoka and Suzuki, 1983

Rhipicephalus tetracornus is known only from collections of immatures made by Kitaoka and Suzuki (1983) at Doi Ithanon (northern Thailand) from the Himalayan field rat ( Rattus nitidus ), Gairdner's shrewmouse ( Mus pahari ) and the Chinese mole shrew ( Anourosorex squamipes ), and from the red spiny rat ( Maxomys surifer ) at Nakhon Nayok, south-central Thailand.

All life history stages were described by Kitaoka and Suzuki (1983). The adults were described from moulted nymphs but were lost in transit. Petney and Keirans (1996a) did not consider this species to be valid, but Guglielmone et al. (2014) consider it tentatively valid based on museum specimens of the immatures. The latter authors, however, are uncertain whether larvae found on larval hosts represent this species.