Xu, Y., Q.-H. Fan, and Z.-Q. Zhang. “A New Species of Ultratenuipalpus (Acari: Tenuipalpidae) from Cook Islands, With a Key to the Known Species”. Zootaxa, vol. 3731, no. 2, Oct. 2013, pp. 223–233, doi:10.11646/zootaxa.3731.2.3.