taxonID	type	description	language	source
E902B41C5A20FFB6D2D6FA8CFDB4F837.taxon	materials_examined	Material examined. New South Wales. 0 / 1 / 0, Snowy River, Mt Kosciuszko NP, 36 º 25.836 S 148 º 19.303 E, alt. 1736 m asl, 5 - xii- 2003; 0 / 1 / 0, Unnamed creek near Carruthers Peak, Mt Kosciuszko NP, 36 º 24.621 S 148 º 18.338 E, alt. 1931 m asl, 6 - xii- 2003; 0 / 1 / 0, Thredbo River near Dead Horse Gap, Mt Kosciuszko NP, 36 º 31.354 S 148 º 15.825 E, alt. 1589 m asl, 8 - xii- 2003; 1 / 0 / 0, Twins Creek at crossing with Olsen Road, Mt Kosciuszko NP, 36 º 19.399 S 148 º 16.612 E, alt. 1058 m asl, 9 - xii- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FA8CFDB4F837.taxon	description	Description. Male: Idiosoma dorsally 483 long, ventrally 537 long and 353 wide. Dorsum in most aspects similar to the description for the female by Cook (1986), but lateral platelets more elongate, and pair of posterior glandularia fused with posteromedial plate. Measurements of dorsal plates: anteromedial plate 292 long and 320 wide, posteromedial plate 168 long and 254 wide, lateral platelets 98 and 106 long. First coxae extending beyond anterior idiosoma margin. Suture lines of coxae obliterated. Cxgl- 4 shifted anteriorly onto third coxae. Genital field with three acetabula; gonopore 42 long. Length of PI-PV: 13, 30, 40, 51, 21. Length of I-leg- 4 – 6: 82, 80, 90. Length of IV-leg- 4 – 6: 130, 126, 102. Legs without swimming setae. Female: Idiosoma dorsally 648 – 729 long, ventrally 697 – 770 long and 478 – 548 wide.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FA8CFDB4F837.taxon	discussion	Remarks. Thus far known from the holotype female only, collected in Mt Kosciuszko NP (Cook 1986). The male is described here for the first time.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FE79FE46FD57.taxon	materials_examined	Material examined. Tasmania. 1 / 0 / 0, Animal Creek, at crossing with road Queenstown-Burnie, 41 º 38.004 S 145 º 36.896 E, alt. 400 m asl, 23 - iii- 2008. New South Wales. 1 / 0 / 0, Waterfall Creek at Gunjulla Flat, Royal NP, 8 - xi- 2001.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FE79FE46FD57.taxon	discussion	Remarks. Previously known from Tasmania and Victoria (Harvey 1998), and here reported for the first time from New South Wales.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FCBAFEC9FBB6.taxon	materials_examined	Material examined. New South Wales. 0 / 1 / 0, White Rock River, at crossing with Imlay Road, South East Forests NP, 37 º 0 8.121 S 149 º 21.370 E, alt. 505 m asl, 10 - xii- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A20FFB6D2D6FCBAFEC9FBB6.taxon	discussion	Remarks. Previously known from Victoria only (Harvey 1989), and here reported for the first time from New South Wales.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A23FFB4D2D6FAB4FE8BFE1D.taxon	materials_examined	Material examined. Queensland. 0 / 1 / 0, Whyanbeel Creek, N of Mossman, 16 º 22.205 S 145 º 19.633 E, alt. 143 m asl, 15 - x- 2005; 0 / 1 / 0, Babinda River, Wooroonooran NP, 17 º 20.484 S 145 º 52.113 E, 16 - x- 2005; 0 / 3 / 0, Woobadda Creek, S of Bloomfield, 15 º 57.204 S 145 º 20.891 E, alt. 21 m asl, 17 - x- 2014; 0 / 3 / 0, Wenlock River near Moreton Telegraph Station, Cape York Peninsula, 12 º 27.336 S 142 º 38.444 E, alt. 34 m asl, 19 - x- 2014; 3 / 3 / 0, Clohesy River near Fig Tree, Dinden NP, 16 º 56.140 S 145 º 37.033 E, alt. 442 m asl, 30 - x- 2014; 0 / 2 / 0, Emerald Creek below falls, Dinden NP, 17 º 0 3.159 S 145 º 32.494 E, alt. 467 m asl, 31 - x- 2014; 0 / 3 / 0, Mulgrave River near outflow Kearney’s Creek, Goldsborough Valley, Wooroonooran NP, 17 º 14.430 S 145 º 46.456 E, alt. 69 m asl, 1 - xi- 2014; 0 / 1 / 0, Babinda River, Babinda, 17 º 20.386 S 145 º 52.102 E, alt. 57 m asl, 2 - xi- 2014; 1 / 2 / 0, Unnamed creek with big boulders, Goldsborough Valley, Wooroonooran NP, 17 º 15.959 S 145 º 47.118 E, alt. 105 m asl, 2 - xi- 2014; 0 / 1 / 0, Henrietta Creek, Wooroonooran NP, 17 º 35.884 S 145 º 45.548 E, alt. 390 m asl, 3 - xi- 2014; 1 / 1 / 0, Tully River at campground, Tully Gorge NP, 17 º 46.280 S 145 º 39.073 E, alt. 86 m asl, 4 - xi- 2014; 0 / 1 / 0, Gooligan Creek at crossing with Palmerston Highway, Wooroonooran NP, 17 º 36.267 S 145 º 45.726 E, alt. 370 m asl, 7 - xi- 2014. Northern Territory. 1 / 5 / 0, South Alligator River at crossing with Gunlom Road, Kakadu NP, 13 º 29.704 S 132 º 28.601 E, 30 - ix- 2005; 0 / 1 / 0, 17 Mile Creek, Nitmiluk NP, 14 º 18.318 S 132 º 25.293 E, 4 - x- 2005.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A23FFB4D2D6FAB4FE8BFE1D.taxon	discussion	Remarks. Known previously from Queensland and the Northern Territory (Smit 2001). In specimens from this study the length of capitulum plus anchoral process varies between 140 and 164. In the higher reaches of these measurements separation with G. imamurai Cook, 1986 is not clear. The latter species was described by Cook (1986) based on a single female with the capitulum plus anchoral process 176 long. The capitulum including anchoral process of the holotype male of G. bodivus measured 129. In the Tully River the anchoral process of the male measured 130, in the accompanying female 144. Females with an anchoral process less than 164 are assigned to G. bodivus, and those with an anchoral process larger than 170 to G. imamurai. Another good character is the distance between the genital field and the posterior idiosoma margin. In female G. imamurai this is almost twice as much as in G. bodivus (100 – 124 in imamurai versus around 60 in bodivus). One male (from Unnamed creek Goldsborough Valley with big boulders) has one of the glandularia posterior to the posterior dorsal plate fused with the posterior plate.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A22FFB3D2D6FE7FFB11FC78.taxon	materials_examined	Type material. Holotype male, Dalrymple Creek, Goomburra Forest Reserve, Queensland, Australia, 27 º 58.781 S 152 º 20.621 E, 5 - xi- 2005 (QM). Paratypes: one male, one female (QM), one male (RMNH), same data as holotype.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A22FFB3D2D6FE7FFB11FC78.taxon	diagnosis	Diagnosis. Posterior dorsal plate with four pairs of glandularia, anterior dorsal plate undivided; palp very stocky, P- 2 ventrally with large teeth; anterior plate of female with a longitudinal band without the reticulate pattern, but not divided.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A22FFB3D2D6FE7FFB11FC78.taxon	description	Description. Idiosoma colour lilac. Male. Idiosoma ventrally 543 (543) long, dorsally 462 (- 486) long, width 389 (405 – 421). Dorsal and ventral shield present. Dorsum with two undivided dorsal plates, anterior plate 243 (251 – 259) long, posterior plate 194 (170 – 203) long; anterior plate with a reticulate pattern; posterior plate with four pairs of glandularia, central part with a reticulate pattern. Anterior coxal plates extending beyond anterior idiosoma margin. Capitulum plus anchoral process 235 long. Genital field with three pairs of acetabula, gonopore 74 long. Length of P 1 – 5: 18, 82, 28, 46, 24. Palp very stocky, P 2 with three large teeth and a small ventrodistal projection, P 3 with a ventral and a ventrodistal projections, P 4 with a long ventral seta and a shorter dorsal seta, P 5 with two small ventral projections. Length of I-leg- 4 – 6: 120, 94, 88. I-leg- 4 enlarged, with a long seta, I-leg- 5 with a ventral, somewhat curved heavy seta. Length of IV-leg- 4 – 6: 122, 138, 110. Swimming setae absent. Female. Idiosoma ventrally 583 long, dorsally 502 long and 437 wide. Dorsum with two plates, anterior plate 243 long, posterior plate 219 long. Anterior plate with a reticulate pattern except for a longitudinal band in the middle, but plate not divided. Posterior plate with four pairs of glandularia, central part with a reticulate pattern. Anterior coxal plates extending beyond anterior idiosoma margin. Capitulum plus anchoral process 267 long. Genital field with three pairs of acetabula, gonopore 100 long. Length of P 1 - P 5: 20, 96, 40, 50, 28; palp as in male. Length of I-leg- 4 – 6: 132, 102, 96. Length of IV-leg- 4 – 6: 138, 146, 110. Legs as in male.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A22FFB3D2D6FE7FFB11FC78.taxon	etymology	Etymology. Named for its very stocky palp.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A22FFB3D2D6FE7FFB11FC78.taxon	discussion	Remarks. The new Gondwanabates species differs from populations of G. vietsi (Imamura, 1984) with the posterior dorsal plate with four pairs of glandularia in the colour (more reddish in G. vietsi), and the ventrodistal projections of P 2, and the ventral and ventrodistal projection of P 3 (both absent in G. vi e t s i). All other known Gondwanabates species have the posterior dorsal plate with either two or three pairs of glandularia.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB2D2D6FF17FD7CFD9E.taxon	materials_examined	Material examined. New South Wales. 0 / 1 / 0, Leatherbarrel Creek at crossing with Alpine Way, Mt Kosciuszko NP, 36 º 31.559 S 148 º 11.611 E, alt. 999 m asl, 8 - xii- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB2D2D6FF17FD7CFD9E.taxon	description	Description. Female. Idiosoma ventrally 543 long, dorsally 510 long and 389 wide. Dorsal and ventral shields present. Dorsum with two plates, anterior plate 251 long, posterior plate 219 long; configuration of dorsal glandularia as in male. Anterior coxae extending beyond anterior idiosoma margin. Capitulum plus anchoral process 160 long. Genital field with three pairs of acetabula; gonopore 106 long. Length of P 1 – 5: 16, 64, 30, 42, 30; palp as in male. Length of I-leg- 4 – 6: 96, 72, 60. Length of IV-leg- 4 – 6: 120, 128, 96. Legs as in male.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB2D2D6FF17FD7CFD9E.taxon	discussion	Remarks. The species was known only from the holotype male, collected in the Mt Kosciuszko National Park. The female is described here for the first time.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB2D2D6FDFCFC8FFCF3.taxon	materials_examined	Material examined. Queensland. 0 / 1 / 0, Wenlock River at crossing with Telegraph Road, Cape York Peninsula, 10 - ix- 2000; 0 / 1 / 0, Little Yabba Creek, hyporheic, at crossing with road Kenilworth-Maleny, 26 º 37.427 S 152 º 41.334 E, alt. 98 m asl, 19 - xi- 2014.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB2D2D6FDFCFC8FFCF3.taxon	discussion	Remarks. Previously known from Victoria and Queensland.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB1D2D6FC12FA97FD7D.taxon	materials_examined	Type material. Holotype female, Aire River at crossing with Binns Road, Great Otway Ranges NP, Victoria, Australia, 38 º 40.103 S 143 º 34.805 E, alt. 240 m asl, 1 - iv- 2008 (NMV).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB1D2D6FC12FA97FD7D.taxon	diagnosis	Diagnosis. I-leg segments stocky, heavy seta of I-leg- 5 short, I-leg- 5 with a ventral projection; palp stocky; P 2 with large teeth, P 4 with a large ventral projection.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB1D2D6FC12FA97FD7D.taxon	description	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 P 1 - 5: 18, 90, 36, 54, 35. Palp stocky; P 2 with large teeth, ventral margin of P 2 slightly convex; P 3 with smaller teeth, P 4 with a large ventral projection, P 5 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.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB1D2D6FC12FA97FD7D.taxon	etymology	Etymology. Named for its yellow colour.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A24FFB1D2D6FC12FA97FD7D.taxon	discussion	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.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A27FFB1D2D6FC9FFB4AFB2F.taxon	materials_examined	Material examined. New South Wales. 0 / 1 / 0, Towamba River at Big Jack Rest Area, South East Forests NP, 36 º 53.885 S 149 º 27.807 E, alt. 271 m asl, 11 - xii- 2003; 0 / 1 / 0, Carters Creek at crossing with Western Distributor Road, 35 º 30.914 S 150 º 0 3.546 E, alt. 187 m asl, 16 - xii- 2003. Queensland. 0 / 1 / 0, Alligator Creek below lower falls, Bowling Green Bay NP, 19 º 26.283 S 146 º 56.874 E, alt. 44 m asl, 10 - xi- 2014; 0 / 1 / 0, Sandy Creek, W of Maleny, Queensland, Australia, 26 º 42.241 S 152 º 41.120 E, alt. 115 m asl, 1 - xii- 2014.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A27FFB1D2D6FC9FFB4AFB2F.taxon	discussion	Remarks. Thus far known only from the type locality in Queensland, and here reported for the first time for New South Wales and Victoria. The female from Carters Creek is ventrally 445 and dorsally 389 long, while the dorsal shield is 373 long. It is therefore much smaller than the specimens of Cook (1986) and my own specimens from Queensland. Morphology of this female, however, agrees well with Cook’s description.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A27FFB0D2D6FB72FA7EFF65.taxon	materials_examined	Material examined. Tasmania. 2 / 10 / 0, Julius Rivulet, Julius River Forest Reserve, 41 º 0 9.296 S 145 º 0 1.707 E, alt. 123 m asl, 21 - iii- 2008; 5 / 10 / 0, Sumac Rivulet at crossing with South Arthur River Forest Drive, 41 º 0 9.934 S 145 º 0 4.152 E, alt. 127 m asl, 22 - iii- 2008; 2 / 7 / 0, unnamed creek crossing road Kanunnan Bridge — Couta Rocks, 41 º 0 8.142 S 144 º 57.003 E, alt. 50 m asl, 22 - iii- 2008; 1 / 0 / 0, Blackwater Rivulet at crossing with road Kanunnan Bridge — Couta Rocks, 41 º 10.006 S 144 º 54.801 E, alt. 132 m asl, 22 - iii- 2008; 0 / 1 / 0, Collingwood River at crossing with road A 10, Franklin-Gordon Wild Rivers NP, 42 º 0 9.770 S 145 º 55.658 E, alt. 370 m asl, 24 - iii- 2008; 0 / 1 / 0, Cuvier River upstream of confluence with Hugel River, Lake St. Clair – Cradle Mountain NP, 42 º 0 6.581 S 146 º 0 9.820 E, alt 760 m asl, 25 - iii- 2008; 1 / 0 / 0, Tyenna River at campground, Mt Field NP, 42 º 41.071 S 146 º 43.026 E, alt. 350 m asl, 26 - iii- 2008; 1 / 3 / 0, South Esk River, upstream of Upper Esk, 41 º 25.182 S 147 º 43.147 E, alt. 362 m asl, 29 - iii- 2008. Queensland. 0 / 1 / 0, Coomera River upstream of Coomera Falls, Lamington NP, 28 º 14 ’ 7.21 ” S 153 º 11 ’ 28.81 ” E, 14 - xi- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A27FFB0D2D6FB72FA7EFF65.taxon	description	Description. Male. Idiosoma brownish, ventrally 518 (494 – 518) long, dorsally 488 (437 – 470) long and 335 (308 – 337) wide. Dorsal and ventral shields present. Dorsum with three plates, anterior plates 258 long, posterior plate 280 long. Dorsal glandularia as in female. Capitulum plus anchoral process 152 long. Genital field with three pairs of acetabula; gonopore 92 long. Length of P 1 – 5: 24, 77, 42, 80, 30; palp as in female. Length of I-leg- 4 – 6: 92, 98, 78. Length of IV-leg- 4 – 6: 120, 136, 96. Legs as in female.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A27FFB0D2D6FB72FA7EFF65.taxon	discussion	Remarks. The male was thus far not described. Juvenile females have the genital field on a separate plate, as illustrated for the holotype by Imamura (1984). Cook (1986) suspected the holotype to be a juvenile, but this could not be proven by him. Gondwanabates hopkinsi is known from Tasmania, Victoria and New South Wales, and here reported for the first time from Queensland. The latter record extends its distribution area more than 900 km north.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFB0D2D6FA8AFC0CFA4A.taxon	materials_examined	Material examined. Queensland. 0 / 1 / 0, Whyanbeel Creek, N of Mossman, 16 º 22.205 S 145 º 19.633 E, alt. 143 m asl, 15 - x- 2005; 0 / 1 / 0, Whitehead Creek between Bloomfield and Cooktown, 15 º 46.843 S 145 º 17.545 E, alt. 184 m, 17 - x- 2014; 0 / 8 / 0, Clohesy River near Fig Tree, Dinden NP, 16 º 56.140 S 145 º 37.033 E, alt. 442 m asl, 30 - x- 2014; 0 / 1 / 0, Babinda River, Babinda, 17 º 20.386 S 145 º 52.102 E, alt. 57 m asl, 2 - xi- 2014.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFB0D2D6FA8AFC0CFA4A.taxon	discussion	Remarks. Previously known only from the type locality in Queensland.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFBFD2D6F9CCFAA5FD8D.taxon	materials_examined	Type material. Holotype male, Wannon River at crossing with Serra Road, Grampians NP, Victoria, Australia, 37 º 20.918 S 142 º 30.386 E, alt. 331 m asl, 15 - iii- 2008 (NMV). Paratype: one male, Mt Williams Creek, downstream of Kalymna Falls, Grampians NP, 37 º 19.034 S 142 º 36.212 E, 18 - iii- 2008 (NMV); two males, Jimmy Creek at campground, Grampians NP, 37 º 22.339 S 142 º 30.203 E, alt. 379 m asl, 15 - iii- 2008 (RMNH).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFBFD2D6F9CCFAA5FD8D.taxon	diagnosis	Diagnosis. I-leg- 5 with a broad, somewhat spoon-shaped seta; capitulum plus anchoral process relatively short; leg segments relatively short.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFBFD2D6F9CCFAA5FD8D.taxon	description	Description. Idiosoma ventrally 446 (397 – 429) long, dorsally 405 (365 – 393) long and 316 (292 – 309) wide. Dorsal and ventral shields present. Dorsum with two large plates, anterior plate 219 long, posterior plate 154 long; dorsal posterior plate with two pairs of glandularia. Anterior coxal plates extending beyond anterior idiosoma margin. Capitulum plus anchoral process 158 (140 – 154) long. Gonopore 78 long, relatively wide. Genital field with three pairs of acetabula. Length of P 1 – P 5: 18, 70, 30, 52, 30. Palp stocky; P 2 and P 3 with large denticles, P 4 with a ventral extension, P 5 with a small ventral extension. Length of I-leg- 4 – 6: 96, 78, 88. I-leg- 5 with a broad, somewhat spoon-shaped seta near the middle of segment, ventrodistal seta not enlarged. Length of IV-leg- 4 - 6: 106, 116, 84. Female: Unknown.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFBFD2D6F9CCFAA5FD8D.taxon	etymology	Etymology. Named after the spoon-shaped seta of the first leg.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A26FFBFD2D6F9CCFAA5FD8D.taxon	discussion	Remarks. With Cook (1986) the new species keys out as G. g e m b u s, but this species the idiosoma with posterolateral humps, the posterolateral margin of the fourth coxae less oblique, a broader I-leg- 5, a less stockier palp and a narrower gonopore. The palp and I-leg are similar to G. v i et s i, but this species has a much longer capitulum + anchoral process (205 – 222), a less stout and not spoon-shaped ventral seta of I-leg- 5 while the I- and IV-leg segments are longer. Moreover, G. vietsi has the posterior dorsal plate with three or four glandularia.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A29FFBED2D6FA12FCE1FCCF.taxon	materials_examined	Material examined. Tasmania. 1 / 4 / 0, Julius Rivulet, Julius River Forest Reserve, 41 º 0 9.296 S 145 º 0 1.707 E, alt. 123 m asl, 21 - iii- 2008; 7 / 4 / 0, Sumac Rivulet at crossing with South Arthur River Forest Drive, 41 º 0 9.934 S 145 º 0 4.152 E, alt. 127 m asl, 22 - iii- 2008; 1 / 3 / 0, unnamed creek crossing road Kanunnan Bridge — Couta Rocks, 41 º 0 8.142 S 144 º 57.003 E, alt. 50 m asl, 22 - iii- 2008; 0 / 1 / 0, Blackwater Rivulet at crossing with road Kanunnan Bridge — Couta Rocks, 41 º 10.006 S 144 º 54.801 E, alt. 132 m asl, 22 - iii- 2008; 1 / 2 / 0, Sterling River at crossing with road A 10, 41 º 46.162 S 145 º 36.573 E, alt. 222 m asl, 23 - iii- 2008; 4 / 3 / 0, Collingwood River at crossing with road A 10, Franklin-Gordon Wild Rivers NP, 42 º 0 9.770 S 145 º 55.658 E, alt. 370 m asl, 24 - iii- 2008; 0 / 3 / 0, Newton Creek at crossing with road B 28, 41 º 54.520 S 145 º 34.199 E, alt. 493 m asl, 24 - iii- 2008; 0 / 1 / 0, Cuvier River upstream of confluence with Hugel River, Lake St. Clair – Cradle Mountain NP, 42 º 0 6.581 S 146 º 0 9.820 E, alt 760 m asl, 25 - iii- 2008; 3 / 5 / 0, Tyenna River at campground, Mt Field NP, 42 º 41.071 S 146 º 43.026 E, alt. 350 m asl, 26 - iii- 2008; 1 / 1 / 0, Franklin River at crossing with road A 10, Franklin-Gordon Wild Rivers NP, 42 º 12.916 S 146 º 0 1.170 E, alt. 421 m asl, 26 - iii- 2008; 0 / 1 / 0, Apsley River at waterhole, Douglas Apsley NP, 41 º 51.758 S 148 º 11.186 E, alt. 71 m asl, 28 - iii- 2008; 2 / 2 / 0, South Esk River, upstream of Upper Esk, 41 º 25.182 S 147 º 43.147 E, alt. 362 m asl, 29 - iii- 2008. Victoria. 0 / 1 / 0, Buckland River at Twelve Mile, 36 º 51.199 S 146 º 51.621 E, alt. 328 m asl, 12 - iii- 2008; 1 / 8 / 0, Cambell River upstream of caravan park, Great Otway Ranges NP, 38 º 34.335 S 143 º 56.731 E, 31 - iii- 2008; 0 / 1 / 0, Aire River at crossing with Binns Road, Great Otway Ranges NP, 38 º 40.103 S 143 º 34.805 E, alt. 240 m asl., 1 - iv- 2008. New South Wales. 1 / 3 / 0, Macleay River at Temagog, 30 º 58.572 S 152 º 39.284 E, alt. 6 m asl, 24 - xi- 2003; 5 / 1 / 0, Carters Creek at crossing with Western Distributor Road, 35 º 30.914 S 150 º 0 3.546 E, alt. 187 m asl, 16 - xii- 2003. Queensland. 0 / 1 / 0, Babinda River, Wooroonooran NP, 17 º 20.484 S 145 º 52.113 E, 16 - x- 2005; 0 / 1 / 0, Kongaboola Creek before confluence with Carnarvon Creek, Carnarvon NP, 29 - x- 2005; 1 / 0 / 0, Ward’s Canyon, upstream of Lower Aljon Falls, Carnarvon NP, 25 º 2 ’ 34.75 ” S 148 º 12 ’ 8.97 “ E, 29 - x- 2005. Specimens with the posterior dorsal plate with four pairs of glandularia: 2 / 0 / 0, Mulgrave River near outflow Kearney’s Creek, Goldsborough Valley, Wooroonooran NP, 17 º 14.430 S 145 º 46.456 E, alt. 69 m asl, 1 - xi- 2014; 1 / 2 / 0, Babinda Creek, Babinda, 17 º 20.386 S 145 º 52.102 E, alt. 57 m asl, 2 - xi- 2014; 1 / 2 / 0, Tully River at campground, Tully Gorge NP, 17 º 46.280 S 145 º 39.073 E, alt. 86 m asl, 4 - xi- 2014; 1 / 0 / 0, Unnamed creek N of Tully River, at Creek Bridge 15, Tully Gorge NP, 17 º 47.954 S 145 º 41.104 E, alt. 49 m asl, 5 - xi- 2014; 0 / 1 / 0, Gooligan Creek at crossing with Palmerston Highway, Wooroonooran NP, 17 º 36.267 S 145 º 45.726 E, alt. 370 m asl, 7 - xi- 2014; 1 / 0 / 0, Broadwater Creek, Broadwater State Forest, 18 º 24.922 S 145 º 56.639 E, alt. 52 m asl, 8 - xi- 2014; 0 / 1 / 0, Big Crystal Creek downstream of rock pools, Paluma Range NP, 18 º 59.013 S 146 º 14.188 E, alt. 88 m asl, 9 - xi- 2014.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A29FFBED2D6FA12FCE1FCCF.taxon	discussion	Remarks. A species known from Tasmania, Victoria and New South Wales, and here reported for the first time from Queensland. The female from Aire River, Victoria has the middle pair of glandularia not fused with the posterior dorsal plate. However, the shape of palp, first leg and other structures is similar to that of G. vi e t s i. A number of specimens from Queensland, on the contrary, have the posterior pair of glandularia fused with the posterior dorsal plate. All these specimens are morphologically similar (including measurements) to G. vietsi and I have assigned all these specimens therefore to G. vietsi.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBED2D6FB4EFF15F9B6.taxon	materials_examined	Material examined. Tasmania. 3 / 0 / 0, Tyenna River at campground, Mt Field NP, 42 º 41.071 S 146 º 43.026 E, alt. 350 m asl, 26 - iii- 2008. Victoria. 1 / 0 / 0, Scrubby Valley Creek at Flat Rock Crossing, Grampians NP, 37 º 0 9.680 S 142 º 26.680 E, alt. 304 m asl, 17 - iii- 2008; 0 / 1 / 0, Aire River at crossing with Binns Road, Great Otway Ranges NP, 38 º 40.103 S 143 º 34.805 E, alt. 240 m asl, 1 - iv- 2008; 1 / 4 / 0, Moleside Creek, Lower Glenelg NP, 38 º 0 4.336 S 141 º 17.507 E, alt. 25 m asl, 3 - iv- 2008.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBED2D6FB4EFF15F9B6.taxon	discussion	Remarks. Thus far known only from Tasmania and New South Wales, and here reported for the first time from Victoria.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBED2D6F9D9FD60F8B0.taxon	materials_examined	Material examined. Tasmania. 1 / 0 / 0, Sumac Rivulet at crossing with South Arthur River Forest Drive, 41 º 0 9.934 S 145 º 0 4.152 E, alt. 127 m asl, 22 - iii- 2008.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBED2D6F9D9FD60F8B0.taxon	discussion	Remarks. Known from Tasmania only.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBDD2D6F8C9FEADFD35.taxon	materials_examined	Type material. Holotype male, Sugarloaf Creek, at crossing with Misty Mountain Road, Monga NP, New South Wales, Australia, 35 º 33 ’ 44.70 ” S, 150 º 0 ’ 48.61 ” E, 15 - xii- 2003 (AMS).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBDD2D6F8C9FEADFD35.taxon	diagnosis	Diagnosis. Venter without shield but with extensive secondary sclerotization, especially around genital field and fourth coxae; P 3 with a large projection.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBDD2D6F8C9FEADFD35.taxon	description	Description. Male. Idiosoma papillate, dorsally 405 long and 332 wide, ventrally 462 long. Dorsum with moderate large glandularia platelets, most posterior pair being the largest. Besides the glandularia platelets a pair of medial platelets without glandularia present. Roof of camerostome with a long pointed process. Venter without shield, but with extensive secondary sclerotization around genital field, fourth coxae and Vgl- 2. First coxae fused medially, Cxgl- 4 near middle of fourth coxae. Genital field with three pairs of acetabula, gonopore 66 long. Length of P 1 – P 5: 16, 46, 36, 58, 33. P 3 with a large ventral projection. Length of I-leg- 4 – 6: 88, 102, 78. Length of IV-leg- 4 – 6: 110, 128, 92. Legs without swimming setae. Female. Unknown.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBDD2D6F8C9FEADFD35.taxon	etymology	Etymology. Named for the extensive secondary sclerotization.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A28FFBDD2D6F8C9FEADFD35.taxon	discussion	Remarks. The only other Rhynchaustrobates species with a large ventral projection is R. bandus Cook, 1986, but this species has a ventral shield, Cxgl- 4 are located close to the insertions of the fourth legs and the projection of P 3 is pointed.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2BFFBCD2D6F943FA8CFE38.taxon	materials_examined	Material examined. Victoria. 0 / 1 / 0, Mackenzie River at Zumsteins Picnic Area, Grampians NP, 37 º 0 5.565 S 142 º 23.206 E, alt. 330 m asl, 16 - iii- 2008. New South Wales. 0 / 1 / 0, Spencer Creek, Mt Kosciuszko NP, 36 º 25.758 S 148 º 21.574 E, alt. 1739 m asl, 5 - xii- 2003; 0 / 1 / 0, Clublake River before confluence with Snowy River, Mt Kosciuszko NP, 36 º 25.785 S 148 º 19.290 E, alt. 1727 m asl, 7 - xii- 2003; 0 / 1 / 0, Leatherbarrel Creek at crossing with Alpine Way, Mt Kosciuszko NP, 36 º 31.559 S 148 º 11.611 E, alt. 999 m asl, 8 - xii- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2BFFBCD2D6F943FA8CFE38.taxon	description	Description. Female. Some additional measurements are given here. Idiosoma dorsally 494 – 567 long and 405 – 498 wide, ventrally 567 – 630 long. Postocularia platelets 40 – 42 long. The female from Spencer Creek has 4 + 5 acetabula, the extra acetabulum small, the female from Leatherbarrel Creek has 2 x 5 acetabula. The chelicere of the latter female is 340 long (holotype: 295), and the straight cheliceral claw is 160 long (holotype: 180). In other aspects (dorsal glandularia platelets, location of Cxgl – 4) it is similar to R. stylatus, and therefore assigned to that species. The number of acetabula of R. stylatus is apparently variable, from 2 x 4 till 2 x 5 acetabula.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2BFFBCD2D6F943FA8CFE38.taxon	discussion	Remarks. Thus far known only from Victoria, and here reported for the first time from New South Wales.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2AFFBCD2D6FA43FD13F8D7.taxon	materials_examined	Material examined. Tasmania. 2 / 2 / 0, Julius Rivulet, Julius River Forest Reserve, 41 º 0 9.296 S 145 º 0 1.707 E, alt. 123 m asl, 21 - iii- 2008; 1 / 0 / 0, unnamed creek crossing road Kanunnan Bridge — Couta Rocks, 41 º 0 8.142 S 144 º 57.003 E, alt. 50 m asl, 22 - iii- 2008; 0 / 1 / 0, Blackwater Rivulet at crossing with road Kanunnan Bridge — Couta Rocks, 41 º 10.006 S 144 º 54.801 E, alt. 132 m asl, 22 - iii- 2008; 2 / 3 / 0, Sumac Rivulet at crossing with South Arthur River Forest Drive, 41 º 0 9.934 S 145 º 0 4.152 E, alt. 127 m asl, 22 - 111 - 2008; 0 / 1 / 0, Collingwood River at crossing with road A 10, Franklin-Gordon Wild Rivers NP, 42 ° 0 9.770 S 145 ° 55.658 E, alt. 370 m asl, 24 - iii- 2008; 1 / 0 / 0, Newton Creek at crossing with road B 28, 41 º 54.520 S 145 º 34.199 E, alt. 498 m asl, 24 - iii- 2008; 1 / 0 / 0, Tyenna River at campground, Mt Field NP, 42 º 41.071 S 146 º 43.026 E, alt. 350 m asl, 26 - iii- 2008; 0 / 1 / 0, South Esk River, upstream of Upper Esk, 41 º 25.182 S 147 º 43.147 E, alt. 362 m asl, 29 - iii- 2008.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2AFFBCD2D6FA43FD13F8D7.taxon	discussion	Remarks. A species known only from Tasmania.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2DFFBBD2D6FF17FABDFC87.taxon	materials_examined	Type material. Holotype male, Little Wonder Creek, near end of Buckra — Bendinni Road, New South Wales, Australia, 30 º 30.034 S 152 º 39.387 E, 23 - xi- 2003 (AMS).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2DFFBBD2D6FF17FABDFC87.taxon	diagnosis	Diagnosis. Dorsum with a large plate, incorporating the postocularia and two pairs of glandularia; chelicerae long, slender and bowed. Palp stocky, P 3 with a ventral extension.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2DFFBBD2D6FF17FABDFC87.taxon	description	Description. Male. Idiosoma papillate, dorsally 397 long and 265 wide, ventrally 470 long. Dorsum with a large plate, 344 long and 308 wide, incorporating the postocularia and two pairs of glandularia. Roof of camerostome with a long pointed process. Venter with a large shield, incorporating coxae and genital field. First coxae fused medially. Genital field with three pairs of acetabula. Gonopore 64 long. Length of P 1 – P 5: 20, 49, 34, 58, 30. Palp stocky, P 3 with a ventral extension, P 4 with a anteroventral extension. Length of I-leg- 4 – 6: 86, 98, 70. Length of IV-leg- 4 – 6: 108, 120, 90. Legs without swimming setae. Female. Unknown.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2DFFBBD2D6FF17FABDFC87.taxon	etymology	Etymology. Named after Truus van der Pal (Alkmaar), who assisted me on all collecting trips to Australia.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2DFFBBD2D6FF17FABDFC87.taxon	discussion	Remarks. The new species is close to R. uniscutatus n. sp., but this species differs in a more slender palp, P 3 without a ventral extension and the chelicera are not as slender and bowed as in the new species. The structure of the integument is also different in the two species, papillate in R. truusae n. sp. and smooth with fine lineation in R. uniscutatus n. sp .. Moreover, in R. uniscutatus n. sp. the postocularia are not incorporated in the dorsal plate.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFBAD2D6FF17FEB0FD5F.taxon	materials_examined	Type material. Holotype male, Scrubby Valley Creek at Flat Rock Crossing, Grampians NP, 37 º 0 9.680 S 142 º 26.680 E, alt. 304 m asl, 17 - iii- 2008 (NMV). Paratype male: one male, Wannon River at crossing with Serra Road, Grampians NP, Victoria, Australia, 37 º 20.918 S 142 º 30.386 E, alt. 331 m asl, 15 - iii- 2008 (RMNH).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFBAD2D6FF17FEB0FD5F.taxon	diagnosis	Diagnosis. P 3 with a short ventral projection.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFBAD2D6FF17FEB0FD5F.taxon	description	Description. Male. Idiosoma papillate, dorsally 365 (356) long and 300 (292) wide, ventrally 437 (421) long. Dorsum with relatively small glandularia platelets; postocularia on a small plate, 46 (48) long. First coxae fused, medial suture lines of coxae obliterated. Cxgl – 4 lying near middle of fourth coxae, Vgl – 2 somewhat close to posterior margin of fourth coxae. Genital field with three pairs of acetabula, gonopore 72 long. Length of P 1 – P 5: 20, 54, 38, 62, 32. Length of I-leg- 4 – 6: 108, 106, 90. Length of IV-leg- 4 – 6: 110, 100, 78. Legs without swimming setae. Female. Unknown.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFBAD2D6FF17FEB0FD5F.taxon	etymology	Etymology. Named after the state of Victoria.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFBAD2D6FF17FEB0FD5F.taxon	discussion	Remarks. The new species is most similar to R. tasmanicus Cook, 1986, which has a longer and more bowed projection of P 3.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFB9D2D6F8BEFE65FCA4.taxon	materials_examined	Material examined. Holotype female, Tully River at campground, Tully Gorge NP, Queensland, Australia, 17 º 46.280 S 145 º 39.073 E, alt. 86 m asl, 4 - xi- 2014 (QM).	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFB9D2D6F8BEFE65FCA4.taxon	diagnosis	Diagnosis. Dorsum with numerous large and smaller platelets, two of these are much larger than the other platelets (and one bearing the postocularia). Posterior to these large platelets a medial pair. Cxgl- 4 close to (indistinct) medial margin.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFB9D2D6F8BEFE65FCA4.taxon	description	Description. Female. Idiosoma papillate, dorsally 429 long and 397 wide, ventrally 565 long. Dorsum with numerous rose-coloured platelets, two pairs much larger than other platelets, anterior of these pairs with the postocularia. Posterior to these large platelets, a pair of small platelets with glandularia, and then more posteriorly a pair without glandularia. Roof of camerostome with a short extension. Venter with a large shield incorporating the coxae and the genital field. First coxae fused medially. Suture lines of coxae indistinct, and posterior suture line of fourth coxae obliterated. Cxgl- 4 located close to obliterated medial suture line of fourth coxae. Genital field with three pairs of acetabula, gonopore 102 long and 88 wide. Length of P 1 – P 5: 30, 40, 32, 56, 34. Length of I-leg- 4 – 6: 108, 106, 90. Length of IV-leg- 4 – 6: 110, 100, 78. Legs without swimming setae. Male. Unknown.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFB9D2D6F8BEFE65FCA4.taxon	etymology	Etymology. Named after the divided posteromedial platelet.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2CFFB9D2D6F8BEFE65FCA4.taxon	discussion	Remarks. The new species is very close to R. geometricus Cook, 1986 which has a rounded, undivided posteromedial platelet, although occasionally it is undivided. However. R. geometricus has four pairs of acetabula. Moreover, the chitinized parts of the new species, including the dorsal platelets, are reddish-coloured, while they are yellowish in R. geometricus. The palp of the new species is more slender compared to R. geometricus, especially P 3 and P 4.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2FFFB8D2D6F8D4FCE5FEF0.taxon	materials_examined	Material examined. New South Wales. 0 / 1 / 0, Sawpit Creek, at crossing with Kosciuszko Road, Mt Kosciuszko NP, 36 º 20.984 S 148 º 33.818 E, alt. 1240 m asl, 6 - xii- 2003; 0 / 1 / 0, Thredbo River near Dead Horse Gap, Mt Kosciuszko NP, 36 º 31.354 S 148 º 15.825 E, alt. 1589 m asl, 8 - xii- 2003; 0 / 1 / 0, Leatherbarrel Creek, at crossing with Alpine Way, Mt Kosciuszko NP, 36 º 31.559 S, 148 º 11 / 611 E, alt. 999 m asl, 8 - xii- 2003.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2FFFB8D2D6F8D4FCE5FEF0.taxon	discussion	Remarks. Thus far known only from New South Wales (Cook 1986, Harvey 1998). One female from Leatherbarrel Creek has the rounded medial platelets divided in two platelets (as in R. bipartitus n. sp.), but is otherwise similar and therefore assigned to this species.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2EFFA7D2D6F96DFF34FC78.taxon	materials_examined	Type material. Holotype female, Gubarra Creek, upstream of pool, Kakadu NP, Northern Territory, Australia, 12 º 49.605 S 132 º 52.708 E, 27 - ix- 2005 (NTM). Paratypes: one female, South Alligator River at crossing with Gunlom Road, Kakadu NP, Northern Territory, Australia, 13 º 29.704 S 132 º 28.601 E, 30 - ix- 2005 (RMNH); one female, Kambolgie Creek, Kakadu NP, 13 º 30.169 S 132 º 23.688 E, alt. 96 m asl, 30 - ix- 2005 (RMNH); one male, four females (QM), one male, four females, (RMNH), Gregory River, Gregory Downs, Queensland, Australia, 18 º 38.811 S 139 º 15.008 E, alt. 68 m asl, 11 - x- 2005.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2EFFA7D2D6F96DFF34FC78.taxon	diagnosis	Diagnosis. Dorsum with one large plate with two pairs of glandularia, postocularia separate; venter with a large shield, incorporating the coxae but excluding the genital field in the female, incorporating the genital field in the male.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2EFFA7D2D6F96DFF34FC78.taxon	description	Description. Female. Idiosoma smooth, finely lineated, dorsally 397 (348 – 462) long and 344 (292 – 378) wide, ventrally 441 (405 – 510) long. Dorsum with one large plate with laterally a small extension, 324 (292 – 376) long and 267 (235 – 308) wide, with two pairs of glandularia. Postocularia not on this plate but separate. Anterior part of dorsal plate with hair-like papillae arranged in a reticulate pattern, but this pattern absent in posterior part of plate. Roof of camerostome with a short pointed process. Venter with a large shield, incorporating the coxae but excluding the genital field. First coxae fused medially. Cxgl – 4 lying close to insertions of fourth legs. Genital field 130 wide, with three pairs of acetabula. Length of P 1 – P 5: 26, 49, 35, 72, 38. Ventral margins of palp segments without projections. Length of I-leg- 4 – 6: 86, 96, 62. Length of IV-leg- 4 – 6: 104, 112, 76. Legs without swimming setae. Male. Idiosoma dorsally 332 (316) long and 267 (275) wide, ventrally 397 (381) long. Dorsum as in female, dorsal plate 300 (275) long and 235 (235) wide. Venter with a ventral shield incorporating the coxae and the genital field. First coxae fused, posterior margin of fourth coxae indistinct, angular. Cxgl – 4 lying close to insertions of fourth legs. Genital field with three pairs of acetabula, gonopore 64 long. Length of P 1 – P 5: 18, 52, 30, 64, 36. Palp stockier than in female, especially P 2 and P 3. Length of I-leg- 4 – 6: 80, 90, 70. Length of IV-leg- 4 – 6: 105, 118, 80. Legs without swimming setae.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2EFFA7D2D6F96DFF34FC78.taxon	etymology	Etymology. Named for the large dorsal plate.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
E902B41C5A2EFFA7D2D6F96DFF34FC78.taxon	discussion	Remarks. The large dorsal plate is only found in R. truusae n. sp., for differences with the new species see there.	en	Smit, Harry (2015): The water mite family Hygrobatidae Koch in Australia. The genera Aspidiobatella Cook, Australorivacarus Viets, Gondwanabates Imamura and Rhynchaustrobates Cook (Acari: Hydrachnidia). Zootaxa 4033 (4): 567-583, DOI: 10.11646/zootaxa.4033.4.7
