Haemaphysalis pentalagi

Due to its host-specific relationship with the endangered Amami rabbit, it is considered a co-endangered species.

The Ryukyu rabbit tick was originally described and named in 1935 based on a single male specimen.

[2] Full descriptions of the male, female, nymphal and larval stages were published in April 1970 in the Journal of Parasitology by Harry Hoogstraal and Noboru Yamagutit.

[3] The Ryukyu rabbit tick is the subject of the first dedicated conservation program for a globally threatened parasite which began in 2022.

[4] This program involves both in-situ monitoring of wild populations of this tick and ex-situ captive breeding of an insurance population in the event that the species becomes extinct in the wild.