The water mite genus Gretacarus K. O. Viets, 1978 from Australia (Acari: Hydrachnidia, Mideopsidae: Gretacarinae), with the description of three new species Author Smit, Harry text Zootaxa 2016 4121 2 159 166 journal article 38918 10.11646/zootaxa.4121.2.5 2023dee1-834d-476f-a863-2b2d8622e63e 1175-5326 266406 BD4E878D-40BF-449D-8235-D450C8BEAE1B Gretacarus clodus Cook, 1986 Material examined. Queensland . 0/3/0, Crediton Creek, Eungella NP, 18-ix-2000 ; 1/10/0, Hann Crossing (stagnant), Lakefield NP, 14º 45’57.30´S 144º 04’46.60” E , 4-ix-2000 ; 0/1/0, Hann Crossing (flowing), Lakefield NP, 5-ix-2000 ; 1/0/0, Jardine River, Cape York Peninsula, 11º 0 9.070 S 142º 21.335 E , alt 7 m asl, 22-x-2014 ; 1/0/ 0, Mango Lagoon, Oyala Thumotang NP, Cape York Peninsula, 13º 37.838 S 142º 34.627 E , alt. 73 m asl, 24-x- 2014 ; 8/1/?1, Prospect Creek, 33 km SW of Sarina, 21º 37.285 S 149º 0 1.595 E , alt. 185 m asl, 17-xi-2014 . Remarks . Known from Victoria and Queensland. Cook (1986) keys out this species based on the single row of acetabula on each side in the posterior two-third of the genital field. However, quite often there is a double row of acetabula on each side. Therefore the key should be “most of the acetabula in a single row on each side in the posterior two-third of the genital field”.