A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima) Parry, B. W. Bull. British Mus. nat. Hist., Zool. ser. 1979 35 323 363 7WF8Z Arachnida Phthiracaridae Phthiracarus Animalia Sarcoptiformes 34 355 Arthropoda species clemens  Imperial Palace Gardens, Tokyo, Japan NUY, Yokohama [badly broken]