The water mites of Western Australia (Acari: Hydrachnidia), with the description of 13 new species Author Orginal, Harry Smit text Acarologia 2021 2021-10-27 61 4 928 966 journal article 2107-7207 Coaustraliobates rostratus Smit, 2001 ( Figure 9 A-B) New records — 1/0/1, Rowell’s Pool, Mount Frankland South NP, 34°49.120′ S 116°35.657′ E, 34 m asl, 6 Feb. 2019 ; 1/0/0, Harvey River at crossing with Kevron Road, Lane Pool Reserve, 33°00.997′ S 116°05.585′ E , 246 m asl, 13 Feb. 2019 . Description — Male: Idiosoma dorsally 567 (794) long and 389 (535) wide, ventrally 575 (745) long. Coxae as in female. Gonopore 66 long and 40 wide, genital field 100 long and 118 wide ( Figure 9A ). Length of P1-5: 34, 82, 80, 170, 46. Palp as in female. Length of I-leg-4-6: 110, 122, 100. I-leg-5 anteroventrally with two short, stout setae. Leg segments of first leg relatively stocky ( Figure 9B ). Length of IV-leg-4-6: 154, 200, 154. III-leg-5 and IV-leg-5 with two long swimming setae. Remarks — Thus far, only the female was known. Above a description of the male is given. Distribution — Previously reported only from the type locality in Victoria , and reported here for the first time from Western Australia .