<documentid="DE69EA507FF37EF498CA39E802A73BBC"ID-DOI="10.11646/zootaxa.5566.3.3"ID-ISSN="1175-5326"ID-Zenodo-Dep="14703311"ID-ZooBank="5A41C10B-C902-4583-AB0F-0E843EB700E3"IM.bibliography_approvedBy="felipe"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.taxonomicNames_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1737370677233"checkinUser="plazi"docAuthor="Smit, Harry & Pešić, Vladimir"docDate="2025"docId="03EC878BFFEDB93E80D4F8D83700FECF"docLanguage="en"docName="zootaxa.5566.3.3.pdf"docOrigin="Zootaxa 5566 (3)"docSource="https://doi.org/10.11646/zootaxa.5566.3.3"docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article"docStyleId="647186512141C8FC8976D5BCC54AEB7D"docStyleName="Zootaxa.2013-.journal_article"docStyleVersion="9"docTitle="Australiobates papillatus Smit & Pešić, 2025, sp. nov."docType="treatment"docVersion="2"lastPageNumber="496"masterDocId="FFD5FFF3FFE7B9318043FFD4352CFFAA"masterDocTitle="New records of hygrobatid water mites from SE Australia (Acari: Hydrachnidia Hygrobatidae) with the description of ten new species"masterLastPageNumber="521"masterPageNumber="481"pageNumber="491"updateTime="1737388463001"updateUser="ExternalLinkService"zenodo-license-document="CLOSED">
<mods:titleid="4178F60FEFDB2272C00CB208F674A012">New records of hygrobatid water mites from SE Australia (Acari: Hydrachnidia Hygrobatidae) with the description of ten new species</mods:title>
<mods:affiliationid="1D97AC955D9AA1A690D1A5DAEFB0CBB5">Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands & Museums Victoria Research Institute, Museums Victoria, GPO Box 666, Melbourne, VIC 3001, Australia</mods:affiliation>
<taxonomicNameid="4C454D1EFFEDB93B80D4F8D834E8F88D"authorityName="Smit & Pešić"authorityYear="2025"box="[151,452,1804,1831]"class="Arachnida"family="Hygrobatidae"genus="Australiobates"higherTaxonomySource="GBIF"kingdom="Animalia"order="Trombidiformes"pageId="10"pageNumber="491"phylum="Arthropoda"rank="species"species="papillatus"status="sp. nov.">
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, unnamed creek at crossing with
<locationid="8E9A6046FFEDB93B843FF8A7302BF826"LSID="urn:lsid:plazi:treatment:03EC878BFFEDB93E80D4F8D83700FECF:8E9A6046FFEDB93B843FF8A7302BF826"box="[1148,1287,1906,1933]"latitude="-30.2661"longLatPrecision="1"longitude="152.9507"municipality="Material"name="Dome Road"pageId="10"pageNumber="491"stateProvince="New South Wales">Dome Road</location>
<collectionCodeid="ED54AE58FFEDB93B814BF80A344FF852"box="[264,355,2014,2040]"country="Netherlands"httpUri="http://biocol.org/urn:lsid:biocol.org:col:34992"lsid="urn:lsid:biocol.org:col:34992"name="National Museum of Natural History, Naturalis"pageId="10"pageNumber="491"type="Museum">RMNH</collectionCode>
<taxonomicNameid="4C454D1EFFECB93A8160F84C3709F81A"authorityName="Smit & Pešić"authorityYear="2025"box="[291,549,1944,1968]"class="Arachnida"family="Hygrobatidae"genus="Australiobates"higherTaxonomySource="GBIF"kingdom="Animalia"order="Trombidiformes"pageId="11"pageNumber="492"phylum="Arthropoda"rank="species"species="papillatus"status="sp. nov.">
<taxonomicNameid="4C454D1EFFEBB93D8160FAA43708FA22"authorityName="Smit & Pešić"authorityYear="2025"box="[291,548,1392,1416]"class="Arachnida"family="Hygrobatidae"genus="Australiobates"higherTaxonomySource="GBIF"kingdom="Animalia"order="Trombidiformes"pageId="12"pageNumber="493"phylum="Arthropoda"rank="species"species="papillatus"status="sp. nov.">
<materialsCitationid="3B2D3CC0FFEBB93D81C6FA2A3415F9CA"collectingDate="2003-12-12"collectorName="Biamanga NP"latitude="-36.57581"location="Mumbulla Creek Picnic Area"longLatPrecision="1"longitude="149.89386"municipality="Mumbulla Creek"pageId="12"pageNumber="493"specimenCount="1"stateProvince="New South Wales">
<collectingRegionid="4981F87FFFEBB93D81C6FA2A374FF9B2"box="[389,611,1534,1560]"country="Australia"name="New South Wales"pageId="12"pageNumber="493">New South Wales</collectingRegion>
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<paragraphid="8BFA369DFFEBB93D8084F9BE319CF95A"blockId="12.[151,1437,1534,1992]"pageId="12"pageNumber="493">Diagnosis. Integument papillate; coxae with sexual dimorphism (in male coxal field merged to a unique ventral plate, including Vgl-1, -2, and -3, genital field and excretory pore; in female coxal plates, Vgl-1, -2, and -3, genital field and excretory pore separate); palpal segment comparatively long, P3 distinctly bulging in posterior half of the segment, ventral margin of P4 with two short, thin setae, placed relatively close to each other.</paragraph>
). Cx-III width 488; posterior apodemes of Cx-IV short. Genital field 146 wide between outer edges of genital acetabula, three pairs of acetabula in a curved line (
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<taxonomicNameid="4C454D1EFFE9B93F8166FBF53704FB93"authorityName="Smit & Pešić"authorityYear="2025"box="[293,552,1057,1081]"class="Arachnida"family="Hygrobatidae"genus="Australiobates"higherTaxonomySource="GBIF"kingdom="Animalia"order="Trombidiformes"pageId="14"pageNumber="495"phylum="Arthropoda"rank="species"species="papillatus"status="sp. nov.">
: dorsal length/height: P1, 34/33; P2, 92/57; P3, 123/55; P4, 155/28; P5, 47/16; palpal segment comparatively long, ventral margin of P2 nearly straight, P3 without setae, distinctly bulging in posterior half of the segment, ventral margin of P4 with two short, thin setae, placed relatively close to each other and extend distally at a sharp angle. Gnathosoma with its long posterior process 316 long. Chelicera 246 long.
). Idiosoma ventrally 1244 long and 1069 wide. Coxal plates separated but with an extended border of secondary sclerotization, coxal field 581 long, Cx-III width 638. Genital field 228 long and 269 wide; genital plates 134–147 long, pregenital sclerite 120 wide, maximum diameter Ac 1–3: 29–47, 38–46, 34; gonopore 188 long; eggs (n = 4) maximum diameter 142–147.
</paragraph>
<paragraphid="8BFA369DFFE9B93F8084F98B34EBF937"blockId="14.[151,1437,1199,2017]"pageId="14"pageNumber="495">Palp: dorsal length/height: P1, 45/41; P2, 117/77; P3, 177/73; P4, 197/37; P5, 55/17. Gnathosoma with its long posterior process 369 long.</paragraph>
<paragraphid="8BFA369DFFE9B93F8084F9733794F94F"blockId="14.[151,1437,1199,2017]"pageId="14"pageNumber="495">Dorsal lengths of I-leg: 75, 147, 209, 272, 272, 261; dorsal lengths of IV-leg: 153, 181, 259, 347, 369, 343; number of swimming setae on IV-leg as in male.</paragraph>
<paragraphid="8BFA369DFFE9B93F8084F93B37F2F8A3"blockId="14.[151,1437,1199,2017]"box="[199,734,1775,1801]"pageId="14"pageNumber="495">Etymology. Named for its papillate integument.</paragraph>
Remarks. Presence of a papillate integument and a characteristic shape of the palp (palpal segment comparatively long, especially P3, which bulging in its posterior half, and P-4 with two relatively short and thin setae, placed close to each other) separate the new species from all other members of the genus
<bibRefCitationid="EFD44B6CFFE9B93F8179F8773492F817"author="Cook D. R."box="[314,446,1955,1981]"pageId="14"pageNumber="495"pagination="1 - 568"refId="ref22356"refString="Cook D. R. (1986) Water mites from Australia. Memoirs of the American Entomological Institute, 40, 1 - 568."type="journal article"year="1986">Cook, 1986</bibRefCitation>
</taxonomicName>
, a species which can be easily separated in the shape of the palp (palpal segment relatively stocky, ventral setae on P-4 relatively long, see figure
<bibRefCitationid="EFD44B6CFFE9B93F837DF8133696F84B"author="Cook D. R."box="[830,954,1991,2017]"pageId="14"pageNumber="495"pagination="1 - 568"refId="ref22356"refString="Cook D. R. (1986) Water mites from Australia. Memoirs of the American Entomological Institute, 40, 1 - 568."type="journal article"year="1986">Cook 1986</bibRefCitation>
) and the absence of a papillate integument.
</paragraph>
<paragraphid="8BFA369DFFE8B93E80D4FF4334C8FF7F"blockId="15.[151,1436,151,357]"pageId="15"pageNumber="496">Note that the level of secondary sclerotization can vary and in juvenile specimens the ventral shield is not formed (see below under Variability).</paragraph>
Variability. The degree of secondary sclerotization is age dependant. For example in juvenile specimens from Mumbulla Creek the ventral shield is still not formed as illustrated in
<collectingRegionid="4981F87FFFE8B93E811EFE9F370BFECF"box="[349,551,331,357]"country="Australia"name="New South Wales"pageId="15"pageNumber="496">New South Wales</collectingRegion>