Australian water mites of the genus Hydrachna Müller, with the description of five new species (Acari: Hydrachnidia: Hydrachnidae) Author Smit, Harry text Zootaxa 2014 3827 2 170 186 journal article 45299 10.11646/zootaxa.3827.2.3 afea86b1-c1b9-4707-8972-61fcb1246bf3 1175-5326 225232 F7FB55C7-DAA7-47DA-A04D-27B98D6D09AF Hydrachna hamata Lundblad, 1947 ( Figs. 5A–C ) Material examined. Victoria . 5/2/0, Victoria Lagoon, SW of Grampians NP, 30-ix-1997 . Tasmania . 1/1/0, Temporary pond 2 km W of Musselroe Bay, Mt Williams NP, 20-x-1997 . South Australia . 2/1/0, Hacks Lagoon (behind reed bed), Bool Lagoon Game Reserve, 13-x-2001 . Description. Male: See Lundblad (1947) . L/W of the specimens from this study: 2432–3196/ 2010–2995 . FIGURE 3. A–E. Hydrachna curtiscutata n. sp. , A–D holotype male, E paratype male. A = dorsal view; B = coxal and genital area; C = genital field; D = palp and capitulum; Scale bars: A–B, D–E = 200 µm, C = 50 µm. FIGURE 4. A–B. Hydrachna curtiscutata , n. sp. , paratype female. A = dorsal view; B = genital field. Scale bars: A–B = 200 µm. Female: Idiosoma L/W 3015/2593 (2834–3960/2613–3598). Dorsum as in male. Fourth coxae posteromedially not very far extending, with a relatively short secondary sclerotization. First, third and fourth coxae with one seta. Genital field 502 long and 842 wide, indented anteriorly for approximately 2/3, with very numerous acetabula. Central part of genital plate with nine small setae. Length of PI–PV: 300, 300, 332, 146, 81; PIV stocky, contracted anteriorly, L/H 2.19. Chelicera 1588 long. Length of I-leg-4–6: 365, 360, 429. Length of IVleg-4–6: 875, 794, 437. Remarks. The female has not been described before. The female is characterized by the large genital field with very numerous small acetabula and a stocky PIV. Previously the species has been reported from Victoria only.