Two new species of the water mite genus Anisitsiellides Lundblad, 1941 from Australia (Acari: Hydrachnidia: Anisitsiellidae) Author K, Harry Smit Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. Author PešićK, Vladimir University of Montenegro, Department of Biology, Cetinjski put bb, 81000 Podgorica, Montenegro. & Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. text Acarologia 2023 2023-06-26 63 3 751 756 http://dx.doi.org/10.24349/wxgx-vtaq journal article 10.24349/wxgx-vtaq 2107-7207 10786181 37F10381-B8D4-4907-AF0C-BD98F5663E39 Anisitsiellides alpinus sp. nov. Zoobank: A74C3EF4-0DF1-4600-82D5-B3BA01D1F5BA ( Figs. 2 A-F) Material examined. Holotype female, Small unnamed creek below summit of Mt. Kosciuszko , Mt Kosciuszko NP , New South Wales , Australia , 36°27.322′ S 148°15.929′ E, 2178 m a.s.l., 7 Dec. 2003 , dissected and slide mounted (AMS). Paratype : one female , Blue Lake Creek near outlet in Blue Lake, Mt Kosciuszko NP, New South Wales , Australia , 36°24.270′ S 148°18.745′ E , 1893 m a.s.l., 6 Dec. 2003 (RMNH). Diagnosis — Dorsal shield with four pairs of glandularia; Cxgl-2 on anterior margin of Cx-II; P-4 without an anteroventral projection. Description — Female – Dorsal and ventral shields present; dorsal shield L/W 684/469, ratio 1.46, dorsal shield bearing the postocularia and four pairs of glandularia ( Fig. 2A ), four pairs of glandularia placed in dorsal furrow; ventral shield L/W 731/588, a separate sclerite present at anterior end of ventral shield, Cxgl-2 on anterior margin of Cx-II, close to Cx-I/Cx-II suture Cxgl-4 situated in ventral shield; gnathosomal bay L 103; medial suture line evident and extending to genital field, posterior lines of Cx-IV obliterated, no ridges extending anteriorly from the region of IV-leg insertions, distance between I-L insertions 393; one pair of glandularia incorporated in the posterior end of the ventral shield; genital field L/W 156/128, ratio 1.22, three pairs of acetabula, L Ac-1-3: 43, 41, 33. Gnathosoma vL 131; palp: total L 290; dL/H, dL/H ratio: P-1, 28/31, 0.9; P-2, 75/60, 1.25; P-3, 49/43, 1.14; P-4, 111/31, 3.6; P-5, 27/14, 1.9; L ratio P-2/P-4, 0.68. P-4 without a projection, with a small denticle-like extension near insertion of ventral setae ( Fig. 2E ). Chelicera with dorsal elevation in the proximal part of the basal segment ( Fig. 2D ), total L 168. Legs — dL of I-leg-2-6: 55, 77, 114, 139, 142; dL of IV-leg-2-6: 78, 98, 142, 156, 116; two very long swimming setae at distal end of IV-leg-5 ( Fig. 2F ). Male — Unknown. Etymology — Named for occurring in the high mountains. Discussion — In regard to the dorsal shield with 4 pairs of glandularia and Cxgl-2 shifted to distal end of Cx-II, the new species resembles A. caledonia Harvey, 1990 . The latter species was originally described from Victoria and can be separated from A. alpinus sp. nov. in having P-4 with an anteroventral projection and the suture lines Cx-II/III are absent ( Harvey 1990 ).