The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia) Author Smit, Harry text Zootaxa 2015 4033 4 567 583 journal article 10.11646/zootaxa.4033.4.7 dcb09c36-7afb-49aa-b351-1aa37ac0236c 1175-5326 232081 50290889-F919-4E19-A173-382C435EB6E2 Gondwanabates flavus n. sp. ( Figs 4 A–D) Type material. Holotype female, Aire River at crossing with Binns Road, Great Otway Ranges NP, Victoria, Australia , 38º 40.103 S 143º 34.805 E , alt. 240 m asl, 1-iv-2008 ( NMV ). FIGURE 4. Gondwanabates flavus n. sp . , holotype female; A. venter; B. dorsum; C. palp; D. I-leg-4–6. Scale bars = 50 µm. Diagnosis . I-leg segments stocky, heavy seta of I-leg-5 short, I-leg-5 with a ventral projection; palp stocky; P2 with large teeth, P4 with a large ventral projection. Description . Male. Idiosoma yellow, ventrally 551 long, dorsally 486 long and 389 wide. Dorsal and ventral shields present. Dorsum with two large plates, anterior plate 243 long, dorsal plate 203 long; posterior dorsal plate with two pairs of glandularia. Capitulum plus anchoral process 235 long. First coxal plates extending beyond anterior idiosoma margin. Suture line of Cx-III and Cx-IV strongly bowed near glandularium. Gonopore 100 long; genital field with three pairs of acetabula. Length of P1-5: 18, 90, 36, 54, 35. Palp stocky; P2 with large teeth, ventral margin of P2 slightly convex; P3 with smaller teeth, P4 with a large ventral projection, P5 with a small ventral extension. Length of I-leg-4–6: 126, 84, 96; height of I-leg-5 32; I-leg-5 with a short heavy seta, located in the middle of segment, and a pointed ventral projection. Length of IV-leg-4–6: 104, 136, 126. Male. Unknown. Etymology . Named for its yellow colour. Remarks . The new species is close to Gondwanabates vietsi , but differs in the shape of I-leg. The segments are stockier, especially I-leg-5, the heavy seta of this segment is shorter. I-leg-5 has a pointed ventral projection, which is absent in G. vietsi . The latter species has the posterior dorsal plate with three pairs of glandularia, but very likely this character is variable (see under G. vi e t s i ). The new species is yellow, while all G. vietsi are brownish.