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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.143.2115" ID-GBIF-Dataset="42d731ee-866d-471b-8dd6-bb0ad329e8e6" ID-PMC="PMC3208531" ID-Pensoft-Pub="1313-2970-143-13" ID-PubMed="22144864" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-143-13" ModsDocOrigin="ZooKeys 143" ModsDocTitle="A new species of the genus Hydrodroma Koch, 1837 (Acari, Hydrachnidia, Hydrodromidae), with a key to the hitherto known six species of the genus in Australia" checkinTime="1451249725860" checkinUser="pensoft" docAuthor="Pesic, Vladimir &amp; Smit, Harry" docDate="2011" docId="353A8A560A3BAD7FB6C183182363FD7F" docLanguage="en" docName="ZooKeys 143: 13-22" docOrigin="ZooKeys 143" docSource="http://dx.doi.org/10.3897/zookeys.143.2115" docTitle="Hydrodroma meridionalis Pesic &amp; Smit, 2011, sp. n." docType="treatment" docVersion="3" lastPageNumber="18" masterDocId="E510FFE4FF88FFC43D352F64351CFF9A" masterDocTitle="A new species of the genus Hydrodroma Koch, 1837 (Acari, Hydrachnidia, Hydrodromidae), with a key to the hitherto known six species of the genus in Australia" masterLastPageNumber="22" masterPageNumber="13" pageNumber="13" updateTime="1668152531031" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A new species of the genus Hydrodroma Koch, 1837 (Acari, Hydrachnidia, Hydrodromidae), with a key to the hitherto known six species of the genus in Australia</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Pesic, Vladimir</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Smit, Harry</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2011</mods:date>
<mods:detail type="volume">
<mods:number>143</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>13</mods:start>
<mods:end>22</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.143.2115</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.143.2115</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-143-13</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="152031801" LSID="urn:lsid:plazi:treatment:353A8A560A3BAD7FB6C183182363FD7F" httpUri="http://treatment.plazi.org/id/353A8A560A3BAD7FB6C183182363FD7F" lastPageId="5" lastPageNumber="18" pageId="0" pageNumber="13">
<subSubSection pageId="0" pageNumber="13" type="nomenclature">
<paragraph pageId="0" pageNumber="13">
<taxonomicName LSID="urn:lsid:zoobank.org:act:07CBCA67-AB0B-4191-A7E2-15744527AAE2" class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="0" pageNumber="13" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="13">sp. n.</taxonomicNameLabel>
Figs 1
<normalizedToken originalValue="AG">A-G</normalizedToken>
2B3ATables 13
</paragraph>
</subSubSection>
<subSubSection lastPageId="1" lastPageNumber="14" pageId="0" pageNumber="13" type="type series">
<paragraph pageId="0" pageNumber="13">Type series.</paragraph>
<paragraph lastPageId="1" lastPageNumber="14" pageId="0" pageNumber="13">
Holotype male, dissected and slide-mounted, Queensland, Lawn Hill Creek, cascades, Lawn Hill NP, 10.v.2005, 18°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-41.806">41.806S</geoCoordinate>
, 138°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="29.138">29.138E</geoCoordinate>
(QM). Paratypes: 12 males, 8 females, same data as holotype, one male and one female of them dissected and slide-mounted in Hoyer's fluid (QM); 35/33/0, Lawn Hill Creek at
<pageBreakToken pageId="1" pageNumber="14" start="start">campground</pageBreakToken>
, Lawn Hill NP, 10.v.2005, 18°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-42.011">42.011S</geoCoordinate>
, 138°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="29.235">29.235E</geoCoordinate>
, four males and two females of them dissected and slide-mounted in Hoyer's fluid (RMNH).
</paragraph>
</subSubSection>
<subSubSection lastPageId="4" lastPageNumber="17" pageId="1" pageNumber="14" type="further records">
<paragraph pageId="1" pageNumber="14">Further records.</paragraph>
<paragraph lastPageId="4" lastPageNumber="17" pageId="1" pageNumber="14">
QUEENSLAND: Nankin Creek, Rockhampton, 04.v.1981, leg. A.P. Mackey, 2/3/0; ibid., 20.vii.1981, 2 [damaged]/2 [damaged]/0; ibid., 06.ii.1982, 1/1 [damaged] /0; Innot Hot Springs, 11.viii.1989, 1/0/0; Broken River near Conical Pool, Eungella NP, 18.ix.2000, 1/2/0; Crediton Creek, Eungella NP, 18.ix.2000, 2/7/0; The Millstream, upstream of Millstream Falls, Millstream NP, 16.ix.2000, 0/10/0; Wenlock River at crossing with road to Iron Range NP, 06.ix.2000, 1/1/0; Little Yabba Creek,
<pageBreakToken pageId="2" pageNumber="15" start="start">S</pageBreakToken>
of Kenilworth, 20.ix.2000, 2/9/0; Cattle Creek at crossing with road to Finch Hatton Gorge, W of Mackay, 19.ix.2000, 0/6/1; Fletcher Creek, Dalrymple NP, 22.x.2005, 19°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-49.125">49.125S</geoCoordinate>
, 146°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="3.771">03.771E</geoCoordinate>
, 6/7/0; Alligator Creek, Bowling Green Bay NP, 22.x.2005, 19°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-26.192">26.192S</geoCoordinate>
, 146°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="56.862">56.862E</geoCoordinate>
, alt. 32 m a.s.l., 5/10/0 (0/1/0 mounted); Gregory River at Gregory Downs, 11.x.2005, 8°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-38.811">38.811S</geoCoordinate>
; 139°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="15.008">15.008E</geoCoordinate>
, alt. 68 m a.s.l., 30/0; Waterview Creek at Jourama Falls, Paluma Range NP, 20.x.2005, 18°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-51.729">51.729S</geoCoordinate>
, 146°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="7.65">07.650E</geoCoordinate>
, 1/0/0; Davies Creek, Davies Creek NP, 13.x.2005, 17°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-0.212">00.212S</geoCoordinate>
, 145°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="34.18">34.180E</geoCoordinate>
, 1/2/0; Little Yabba creek at Charlie Moreland Campground, Kenilworth, 02.xi.2005, 26°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-36.928">36.928S</geoCoordinate>
, 152°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="39.105">39.105E</geoCoordinate>
, 11/15/0. NEW SOUTH WALES: School Creek near Morton NP, 05.xi.2001, 0/1/0; Upper Kangaroo River, N of Kangaroo Valley, 07.xi.2001, 1/1/0; Wattamolla Creek, Royal NP, 08.xi.2001, 0/2/0; tributary of Sawyers Creek, S of Kangaroo Valley, 06.xi.2001, 2/2/0; Bugong Creek near border of Morton NP,
<pageBreakToken pageId="3" pageNumber="16" start="start">05</pageBreakToken>
.xi.2001, 6/9/1; Nymboida River at Platypus Flat, Nymboi-Binderay NP, 09.xi.2003, 30°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-11.146">11.146S</geoCoordinate>
, 152°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="41.499">41.499E</geoCoordinate>
, alt. 443 m a.s.l., 2/1/0; Urumbilum River, Bindarri NP, 7.xi.2003, 30°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-15.966">15.966S</geoCoordinate>
, 152°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="57.042">57.042E</geoCoordinate>
, alt. 137 m a.s.l., 3/2/0 (1/0/0 mounted); Mann River at Mann River Nature Reserve, 20.xi.2003, 29°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-41.291">41.291S</geoCoordinate>
, 152°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="5.815">05.815E</geoCoordinate>
, alt. 403 m a.s.l., 2/2/0 (1/0/0 mounted); Towamba River at Big Jack Rest Area, South East Forests NP, 11.xii.2003, 31°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-53.885">53.885S</geoCoordinate>
, 149°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="27.807">27.807E</geoCoordinate>
, alt. 271 m a.s.l, 1/6/0; Wog Wog River at crossing with Wog Way, 10.xii.2003, 37°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-4.986">04.986S</geoCoordinate>
, 149°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="29.027">29.027E</geoCoordinate>
, alt. 332 m a.s.l., 1/0/2; Bellinger River at Gordanville Crossing, 22.xi.2003, 30°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-25.067">25.067S</geoCoordinate>
, 152°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="50.845">50.845E</geoCoordinate>
, alt. 20 m a.s.l., 1/1/0; Minnemurra River at Minnemurra Rainforest, 18.xii.2003, 34°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-38.183">38.183S</geoCoordinate>
, 150°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="43.272">43.272E</geoCoordinate>
, 0/2/2; NORTHERN TERRITORY: Douglas River at Douglas Hot Springs, 01.viii.1994, 13°46S, 131°26E, 3/1/0 (1/1/0 mounted); Pond Chinaman Creek, 16 km S of Katherine, 29.vii.1994, 7/7/1; Pool near Jim Jim Falls, Kakadu NP, 23.vii.1994, 2/0/0; Katherine River near Visitors Centre, Katherine Gorge NP, 28.vii.1994, 4/1/0; 17 Mile Creek, tributary of Katherine River, Katherine Gorge NP, 28.vii.1994, 0/2/0. WESTERN AUSTRALIA: Pool Lennard River, Windjana Gorge NP, 09.ix.1998, 1/1/0; Plunge pool, The Grotto, S of Wyndham, 20.ix.1998 1/0/0; Pool Lennard Gorge, The Kimberley, 1.ix.1998, 2/1/0; Pool Valentine Springs, W of Kununurra, 18.ix.1998, 0/2/0; Plunge Pool Black Rock Falls, W of Kununurra, 18.ix.1998, 0/1/0; pools 3 km W of Lennard Gorge, The Kimberley, 10.ix.1998, 1/1/0; unnamed creek at crossing with Windjana Gorge road, 38 km N of Great Northern Highway, 30.ix.1998, 2/9/0; pool west of Tunnel Creek, Tunnel Creek NP, 30.ix.1998,
<pageBreakToken pageId="4" pageNumber="17" start="start">6</pageBreakToken>
/6/0. VICTORIA: Crystal Brooke at Hospice Plain, Mt Buffalo NP, 10.x.1997, 0/1/0; Stony Creek downstream of Turret Falls, Grampians NP, 17.iii.2008, 37°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-9.662">09.662S</geoCoordinate>
, 142°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="29.789">29.789E</geoCoordinate>
, alt. 517 m a.s.l., 0/1/0; Mt Williams Creek, downstream of Kalymna Falls, Grampians NP, 18.iii.2008, 37°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-19.034">19.034S</geoCoordinate>
, 142°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="36.212">36.212E</geoCoordinate>
, 1/0/0; Rockpool Buandik Falls, 16.iii.2008, 37°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-14.803">14.803S</geoCoordinate>
, 142°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="16.914">16.914E</geoCoordinate>
, 1/2/0; Stringers Creek upstream of Walhalla, 09.iii.2008, 37°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-56.006">56.006S</geoCoordinate>
, 146°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="26.926">26.926E</geoCoordinate>
, alt. 360 m a.s.l., 0/1/0; Jump Creek, Mt Buffalo NP, 11.iii.2008, 36°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-46.35">46.350S</geoCoordinate>
, 146°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="47.636">47.636E</geoCoordinate>
, alt. 1468 m a.s.l., 1/1/0;. SOUTH AUSTRALIA: Onkaparinga River at Sundews Trail, Onkaparinga NP., 06.iv.2008, 35°
<geoCoordinate direction="south" orientation="latitude" precision="55" value="-9.478">09.478S</geoCoordinate>
, 138°
<geoCoordinate direction="east" orientation="longitude" precision="55" value="34.791">34.791E</geoCoordinate>
, alt. 95 m a.s.l., 5/3/0.
</paragraph>
</subSubSection>
<subSubSection pageId="4" pageNumber="17" type="diagnosis">
<paragraph pageId="4" pageNumber="17">Diagnosis.</paragraph>
<paragraph pageId="4" pageNumber="17">Genital plate with 37-52 acetabula in 3-4 longitudinal rows; palp segments narrow (L/H ratio P-4 4.6-5.2, in both sexes); number of swimming setae: II-Leg-5 1; III-Leg-4p 7-9, III-Leg-5p 5-7, IV-Leg-4a 6-12, IV-Leg-4p 6-12, IV-Leg-5a 2-4, IV-Leg-5p 2-8.</paragraph>
</subSubSection>
<subSubSection lastPageId="5" lastPageNumber="18" pageId="4" pageNumber="17" type="description">
<paragraph pageId="4" pageNumber="17">Description.</paragraph>
<paragraph pageId="4" pageNumber="17">
Male. (holotype; in parentheses measurements of paratypes, if not given otherwise n = 5): Idiosoma L/W (800
<normalizedToken originalValue="994/680">-994/680-</normalizedToken>
813); integument papillae bluntly pointed. Coxal field: L Cx-I+II, 208 (206-226, x¯ = 215), Cx-III+IV, 244 (241-263, x¯ = 252), total number of coxal setae: 15-18 (18-22, x¯ = 20) on Cx-I, 18-19 (16-21, x¯ = 18) on Cx-II, 14 (11-16, x¯ = 14) on Cx-III, 17 (15-19, x¯ = 17) on Cx-IV. Genital plate (Fig. 1B, 3A): setae more numerous than in females, for measurements, Ac and setae numbers see Table 1; ejaculatory complex L 163 (163-177, n = 3, x¯ = 169). Capitulum vL 183 (188-203, x¯ = 195); chelicera (Fig. 1D) total L 247 (265-275, x¯ = 270), basal segment L 194 (209-216, x¯ = 213), claw L 51 (52-55, x¯ = 54). Palp as in female, for chaetotaxy see Fig. 2B, for measurements see Table 1. Number of swimming setae on legs are presented in Table 2.
</paragraph>
<paragraph pageId="5" pageNumber="18">
<pageBreakToken pageId="5" pageNumber="18" start="start">Female</pageBreakToken>
. (paratypes, n = 3): Idiosoma L/W 840
<normalizedToken originalValue="1044/750">-1044/750-</normalizedToken>
938. Coxal field: L Cx-I+II, 219, Cx-III+IV, 247; number of coxal setae: 18-23 (x¯ = 21) on Cx-I, 14-23 (x¯ = 19) on Cx-II, 12-16 (x¯ = 14) on Cx-III, 14-19 (x¯ = 17) on Cx-IV. Shape of genital plate as in Fig. 1C, for measurements, Ac and setae numbers see Table 1. Capitulum vL 203-225 (x¯ = 217); chelicera total L 269-286 (x¯ = 278), basal segment L 214-235 (x¯ = 224), claw L 54-60 (x¯ = 56). Palp: For chaetotaxy see Fig. 1F, for measurements see Table 1. Numbers of swimming setae on legs are presented in Table 2.
</paragraph>
<caption pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
Figure 1.
<normalizedToken originalValue="AG">A-G</normalizedToken>
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp.n. (
<normalizedToken originalValue="AB">A-B</normalizedToken>
, D, G = male holotype, C, E, F = female paratype) A = coxal and genital field
<normalizedToken originalValue="BC">B-C</normalizedToken>
= genital field D = chelicera E = palp, lateral view F = palp, medial view G = ejaculatory complex. Scale Bars = 100
<normalizedToken originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
FIgure 2. A
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma torrenticola" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="torrenticola">Hydrodroma torrenticola</taxonomicName>
(Walter, 1908), male (Croatia, Ombla spring): palp, medial view B
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n., male holotype: palp, medial view. Scale bar = 100
<normalizedToken originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
Figure 3. A
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n., male paratype: genital field B
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma torrenticola" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="torrenticola">Hydrodroma torrenticola</taxonomicName>
(Walter, 1908), male (Serbia, Kozjak Mt., stream): genital field. Scale bar = 100
<normalizedToken originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption ID-Table-UUID="5314E773D76CBE2BC95BB921A8D0105C" httpUri="http://table.plazi.org/id/5314E773D76CBE2BC95BB921A8D0105C" pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
Table 1. Morphometric data for the genital plate, palp and leg segments (2-6) for
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n. Numbers (n) and length in
<normalizedToken originalValue="µm">µm</normalizedToken>
(L) are given.
</paragraph>
</caption>
<paragraph pageId="5" pageNumber="18">
<table pageId="5" pageNumber="18">
<tr pageId="5" pageNumber="18">
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">MALE</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">FEMALE</th>
</tr>
<tr pageId="5" pageNumber="18">
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">holotype</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">paratype (n =5, in parentheses x¯)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">paratype (n =3)</th>
</tr>
</table>
</paragraph>
<caption ID-Table-UUID="8FE57E3029D9AA51395AF1910659145C" httpUri="http://table.plazi.org/id/8FE57E3029D9AA51395AF1910659145C" pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
Table 2. Number of swimming setae of
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n., from Lawn Hill Creek (type series).
</paragraph>
</caption>
<paragraph pageId="5" pageNumber="18">
<table pageId="5" pageNumber="18">
<tr pageId="5" pageNumber="18">
<td colspan="2" pageId="5" pageNumber="18" rowspan="1">
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
</td>
</tr>
</table>
</paragraph>
<caption ID-Table-UUID="085E322CE7FDB5C117B416141BE5F954" httpUri="http://table.plazi.org/id/085E322CE7FDB5C117B416141BE5F954" pageId="5" pageNumber="18">
<paragraph pageId="5" pageNumber="18">
Table 3. Number of swimming setae of
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n. (Victoria: Stony Creek 1♀, Rockpool Buandik Falls 2♀, Jump Creek 1♂; Queensland: Gregory River 2♂, 2♀, Fletcher Creek 3♀, Cattle Creek 1♀, Waterview Creek 1♂, Davies Creek 1♂, 1♀, Alligator Creek 1♀, Broken River 2♀; New South Wales: Kangaroo Valley 1♂, 1♀, Bugong Creek 2♂, 1♀, Towamba River 1♀, Wog Wog River 1♂; Western Australia: Plunge pool, The Grotto, S of Wyndham, 1♂, Pool Lennard River 2♀,1♂, S of Kununnura 2♀, pool W of Tunnel Creek 2♂,1♀, unnamed creek at crossing with Windjana Gorge road 1♀; Northern Territory: Douglas River 1♂, 1♀, Chinaman Creek 2♂, 3♀).
</paragraph>
</caption>
<paragraph pageId="5" pageNumber="18">
<table pageId="5" pageNumber="18">
<tr pageId="5" pageNumber="18">
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">Victoria</th>
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">Queensland</th>
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">New Southern Wales</th>
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">Western Australia</th>
<th colspan="2" pageId="5" pageNumber="18" rowspan="1">Northern Territory</th>
</tr>
<tr pageId="5" pageNumber="18">
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">male (n =1)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">female (n =3)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">male (n =4)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">female (n =10)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">male (n =4)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">female (n =3)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">male (n =4)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">female (n =7)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">male (n = 3)</th>
<th colspan="1" pageId="5" pageNumber="18" rowspan="1">female (n = 4)</th>
</tr>
</table>
</paragraph>
</subSubSection>
<subSubSection pageId="5" pageNumber="18" type="remarks">
<paragraph pageId="5" pageNumber="18">Remarks.</paragraph>
<paragraph pageId="5" pageNumber="18">
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n. is most similar to the European
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma torrenticola" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="torrenticola">Hydrodroma torrenticola</taxonomicName>
(Walter, 1908), in the presence of one swimming seta on II-Leg-5, IV-Leg-5 anteriorly with 2-5 swimming setae and the presence of relatively large-sized leg claws.
</paragraph>
<paragraph pageId="5" pageNumber="18">
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma torrenticola" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="torrenticola">Hydrodroma torrenticola</taxonomicName>
(in parentheses data combined from
<bibRefCitation author="Wiles, PR" journalOrPublisher="Archiv fuer Hydrobiologie, Supplement" pageId="6" pageNumber="19" pagination="365 - 403" title="The systematics of the British Hydrodromidae Viets, 1936." volume="70" year="1985">Wiles 1986</bibRefCitation>
,
<bibRefCitation pageId="5" pageNumber="18">Di Sabatino et al. 2010</bibRefCitation>
and our material from Croatia and Serbia) differs from
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma meridionalis" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="meridionalis">Hydrodroma meridionalis</taxonomicName>
sp. n., in larger dimensions of the genital plates in the both sexes (L 225-275
<normalizedToken originalValue="µm">µm</normalizedToken>
), a more slender genital plate in the male (compare Figs 3A with 3B), a longer ejaculatory complex (L&gt; 200
<normalizedToken originalValue="µm">µm</normalizedToken>
), stouter palp segments, especially P-4 (compare Figs 2A with Fig. 2B) and generally a lower number of swimming setae on III-Leg-4 (5-8 swimming setae).
</paragraph>
</subSubSection>
<subSubSection pageId="5" pageNumber="18" type="variability">
<paragraph pageId="5" pageNumber="18">Variability.</paragraph>
<paragraph pageId="5" pageNumber="18">We found variability in the number of swimming setae (Table 3). The populations from Western Australia are characterized by generally lower number of swimming setae on anterior IV-Leg-5 (1-2 swimming setae, occasionally setae reduced on one side).</paragraph>
</subSubSection>
<subSubSection pageId="5" pageNumber="18" type="etymology">
<paragraph pageId="5" pageNumber="18">Etymology.</paragraph>
<paragraph pageId="5" pageNumber="18">Named for its southern occurrence.</paragraph>
</subSubSection>
<subSubSection pageId="5" pageNumber="18" type="habitat">
<paragraph pageId="5" pageNumber="18">Habitat.</paragraph>
<paragraph pageId="5" pageNumber="18">
Most specimens were taken from pools of low order streams or from lotic areas of slow flowing streams. Like
<taxonomicName class="Arachnida" family="Hydrodromidae" genus="Hydrodroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodroma torrenticola" order="Trombidiformes" pageId="5" pageNumber="18" phylum="Arthropoda" rank="species" species="torrenticola">Hydrodroma torrenticola</taxonomicName>
, the new species is obviously rheophilous.
</paragraph>
</subSubSection>
<subSubSection pageId="5" pageNumber="18" type="distribution">
<paragraph pageId="5" pageNumber="18">Distribution.</paragraph>
<paragraph pageId="5" pageNumber="18">Widespread in Australia (Queensland, Victoria, New Southern Wales, Western Australia, Northern Territory, South Australia).</paragraph>
</subSubSection>
</treatment>
</document>