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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1185.108286" ID-Pensoft-Pub="1313-2970-1185-163" ID-Pensoft-UUID="B67D881FA2A452A0B8122D7ABC81F819" ID-ZooBank="19AA77BF3A99428FB7A9D83F9EBA6D8F" ModsDocID="1313-2970-1185-163" checkinTime="1701287342901" checkinUser="pensoft" docAuthor="Zehnpfennig, Jessica R. &amp; Mahon, Andrew R." docDate="2023" docId="5EAAF589767553BEAC7CC7C05918669D" docLanguage="en" docName="ZooKeys 1185: 163-180" docOrigin="ZooKeys 1185" docPubDate="2023-11-28" docSource="http://dx.doi.org/10.3897/zookeys.1185.108286" docTitle="Austropallene halanychi Zehnpfennig &amp; Mahon 2023, sp. nov." docType="treatment" docUuid="C15B8CD5-0E11-47C4-8626-81D33D718055" docUuidSource="ZooBank" docVersion="1" id="B67D881FA2A452A0B8122D7ABC81F819" lastPageNumber="163" masterDocId="B67D881FA2A452A0B8122D7ABC81F819" masterDocTitle="Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica" masterLastPageNumber="180" masterPageNumber="163" pageNumber="163" updateTime="1701287342901" updateUser="pensoft">
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<mods:title id="E51E802951EAF67EDA022597F77F87A3">Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica</mods:title>
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<mods:namePart id="E3DC73368011381C5D2974FA221D3957">Zehnpfennig, Jessica R.</mods:namePart>
<mods:nameIdentifier id="9ED279A31B2CBA7BA71319DD63F8D601" type="ORCID">https://orcid.org/0000-0001-9865-2485</mods:nameIdentifier>
<mods:affiliation id="701E663C7903E05A2F3DCA55470D645D">Department of Biology, Central Michigan University, Mount Pleasant, MI, USA</mods:affiliation>
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<mods:namePart id="FE39D7E6EB2C8704E20FE76BB9A8108E">Mahon, Andrew R.</mods:namePart>
<mods:nameIdentifier id="C78A6C3081F911471907209B0C6ED5E1" type="ORCID">https://orcid.org/0000-0002-5074-8725</mods:nameIdentifier>
<mods:affiliation id="796B62B726D50E96BA06ACC4C7CEE120">Department of Biology, Central Michigan University, Mount Pleasant, MI, USA</mods:affiliation>
<mods:nameIdentifier id="E3043D9124016537697323404858CDAB" type="email">mahon2a@cmich.edu</mods:nameIdentifier>
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<mods:date id="BA722132D8BE378F66FD09BEE0C94233">2023</mods:date>
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<treatment id="5EAAF589767553BEAC7CC7C05918669D" LSID="urn:lsid:zoobank.org:act:C15B8CD5-0E11-47C4-8626-81D33D718055" httpUri="http://treatment.plazi.org/id/5EAAF589767553BEAC7CC7C05918669D" lastPageNumber="163" pageId="0" pageNumber="163">
<subSubSection id="0B6850D412A7DDAAD7525BEDE327AFE4" pageId="0" pageNumber="163" type="nomenclature">
<paragraph id="E6A3C6DDD3DD18FE88DA27A76A5C9175" pageId="0" pageNumber="163">
<taxonomicName id="E18A024120785B61E7C551CF4A279243" LSID="https://zoobank.org/C15B8CD5-0E11-47C4-8626-81D33D718055" authority="Zehnpfennig &amp; Mahon, 2023" authorityName="Zehnpfennig &amp; Mahon" authorityYear="2023" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi" status="sp. nov.">Austropallene halanychi</taxonomicName>
<taxonomicNameLabel id="9C0228B8464D14FF86428EEEE95BBAAA" pageId="0" pageNumber="163">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="91439C338997D4D9DC9AD2C1B12E67F1" pageId="0" pageNumber="163" type="description">
<paragraph id="6EBBE27FBD73A21935B21F510070ED75" pageId="0" pageNumber="163">
<figureCitation id="762A6A21349AC66A0982DE7BE965854C" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">Figs 2</figureCitation>
<figureCitation id="1A496E0AC61B58D46FCBFB3133B134EF" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">, 3</figureCitation>
<figureCitation id="F29DB55DA558F48F06AC083920EFC352" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Austropallene halanychi sp. nov., male holotype A oviger, entire B strigilis, close-up view showing compound spines on segments 7 - 10 C compound spines on segment 9 D compound spines on segment 9 E strigilis, side view, showing compound spines on segments 7 - 10 (some spines on segment 10 are damaged or missing) F segments 8 - 10 with compound spines, and segment 10 with two terminal spines G segment 10, top view, close-up, with two terminal compound spines." figureDoi="10.3897/zookeys.1185.108286.figure4" httpUri="https://binary.pensoft.net/fig/943967" pageId="0" pageNumber="163">, 4</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="74D37829D325C17524F260B59E31EFE8" pageId="0" pageNumber="163" type="type locality">
<paragraph id="35159D9A840C9CE5B191666B0CB5E5E8" pageId="0" pageNumber="163">Type locality.</paragraph>
<paragraph id="357276523907B561C057AB150B0B0E8A" pageId="0" pageNumber="163">
Antarctica, Ross Sea, Ross Shelf, 570 m depth,
<geoCoordinate id="1C5BFE6606184BD4D2D8B23C6844277A" degrees="75" direction="south" minutes="19" orientation="latitude" precision="1" seconds="46.7" value="-75.329636">75°19'46.7&quot;S</geoCoordinate>
,
<geoCoordinate id="2B515B978663087889E4A97622E26326" degrees="176" direction="west" minutes="59" orientation="longitude" precision="1" seconds="06.3" value="-176.98509">176°59'06.3&quot;W</geoCoordinate>
, collected via benthic trawl, 31 January 2013, RVIB
<emphasis id="0FFF7553B703A8851A255D0E86E8E71C" italics="true" pageId="0" pageNumber="163">Nathaniel B. Palmer</emphasis>
(NBP12-10), A. Mahon leg.
</paragraph>
</subSubSection>
<subSubSection id="7CD72B75AD17FB75759D36E420D887F3" pageId="0" pageNumber="163" type="type specimen">
<paragraph id="70550AE1F591632E1B982363DC42F7F2" pageId="0" pageNumber="163">Type specimen.</paragraph>
<paragraph id="90411C23699A2601D3DC35F5874B2233" pageId="0" pageNumber="163">
Holotype male preserved in ethanol, original label &quot;Antarctica, Ross Sea, Ross Shelf, 570 m depth,
<geoCoordinate id="9A691354F2EED6EB4CD6D5B9C5744ABF" degrees="75" direction="south" minutes="19" orientation="latitude" precision="1" seconds="46.7" value="-75.329636">75°19'46.7&quot;S</geoCoordinate>
,
<geoCoordinate id="DE874AF5E8A44DF220BECDE9AA565D69" degrees="176" direction="west" minutes="59" orientation="longitude" precision="1" seconds="06.3" value="-176.98509">176°59'06.3&quot;W</geoCoordinate>
, 31 January 2013, J. Zehnpfennig and A. Mahon&quot;, NMNH 1548440&quot;; handwritten label &quot;Ch 226.1E&quot;.
</paragraph>
</subSubSection>
<subSubSection id="FC467675302A199A0FD38C8512ED3612" pageId="0" pageNumber="163" type="diagnosis">
<paragraph id="DAC67713F9C24CDABC7FC97EEE5964CD" pageId="0" pageNumber="163">Diagnosis.</paragraph>
<paragraph id="C841C7D1F89C01BB862DDB714D642D98" pageId="0" pageNumber="163">
The new species can be differentiated from all other described
<taxonomicName id="7B9D57AD414F3BC56041F30E878B016C" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="genus">
<emphasis id="E0851626865D0E99D9A879EE9E19F4F5" italics="true" pageId="0" pageNumber="163">Austropallene</emphasis>
</taxonomicName>
species based on its much larger size, as well as its unique and distinctive chelifores. The chelifore claw of
<taxonomicName id="723D3ED06D03F3EC6B43827FCFE3D02D" class="Pycnogonida" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="A. halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi">
<emphasis id="8DA05187FF21DB758006E369D344B1CC" italics="true" pageId="0" pageNumber="163">A. halanychi</emphasis>
</taxonomicName>
sp. nov. closes completely when the fingers converge, with no visible space remaining between the fixed and movable fingers. The movable finger of the chelifore claw is distinctly shorter than the fixed finger, and the chelifore fingers do not contain any denticles or notches on their inner surfaces.
</paragraph>
</subSubSection>
<subSubSection id="AF29871E5AE659148A0E9EFC6B2FB87C" pageId="0" pageNumber="163" type="description">
<paragraph id="7B012552AC222D9B7645626DF5154150" pageId="0" pageNumber="163">Description of holotype (male).</paragraph>
<paragraph id="EB68F7FA70EC820530A79FB1C4D1A104" pageId="0" pageNumber="163">
Slender appearance, fully segmented trunk; neck distinct, large oblong ovigers attaching laterally; cephalic spurs present (Figs
<figureCitation id="98DE3AA0A3F224B70EDCD14FDEDBDB0A" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2A-C</figureCitation>
,
<figureCitation id="9DAA7F49F14B0B49647BFCCA0A7F57FA" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3A, B</figureCitation>
). Ocular tubercle (Figs
<figureCitation id="E7842769DC7E4270227F6B0A6E802888" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2A-C</figureCitation>
,
<figureCitation id="EF1F9F58386E5C2F4698F7B7E09BF9A9" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3B, C</figureCitation>
) low, rounded, slightly inclined backwards, prominent distal papillae; four darkly pigmented eyes, anterior pair larger than posterior pair (Fig.
<figureCitation id="42CF2C4AB4E067AFFF1376C6FC27D96B" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2A, I</figureCitation>
). Lateral processes long, smooth, without spines. Abdomen short, conical, swollen distally, cleft anal opening. Proboscis (Figs
<figureCitation id="1A8E4D25507BC86B854CA3A493669A43" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2A-C</figureCitation>
,
<figureCitation id="DD06A6CCB17A948035DF49AB364CD8D2" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3B, D, E</figureCitation>
) directed ventrally, broad at base, conical, slight mid-point constriction, distally tapering; mouth surrounded by setose wreath (Figs
<figureCitation id="167534A4C26A7C505B27D9E058C5665C" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2G, H</figureCitation>
,
<figureCitation id="E384FE6F73AB9FDA73AA6E2119C82084" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3E</figureCitation>
).
</paragraph>
<caption id="D62B2DFC5283AF4BE4F2679F2600E63C" doi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163" start="Figure 2" startId="F2">
<paragraph id="3B73E4D02D9A20617B824E3DCBBD0CFD" pageId="0" pageNumber="163">
<emphasis id="A40F5C802ADBD557799FCC8476972469" bold="true" pageId="0" pageNumber="163">Figure 2.</emphasis>
<taxonomicName id="42CBB0F83FE8697D775EE7DD80CB7A7A" authorityName="Zehnpfennig &amp; Mahon" authorityYear="2023" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi">
<emphasis id="EEB58217B95C2F8A53353BF4424BF417" italics="true" pageId="0" pageNumber="163">Austropallene halanychi</emphasis>
</taxonomicName>
sp. nov., male holotype
<emphasis id="1C26582E3B813A95C4FB3E94710AFF3B" bold="true" pageId="0" pageNumber="163">A</emphasis>
side view (scale)
<emphasis id="CD6F596EF8F4E6627796EA1358134BBC" bold="true" pageId="0" pageNumber="163">B</emphasis>
dorsal view
<emphasis id="C8FD5DB15E13A008D7319934FF5C0299" bold="true" pageId="0" pageNumber="163">C</emphasis>
front view, note cephalic spurs
<emphasis id="19B0C02AE2AA2778594CB752FA9DC309" bold="true" pageId="0" pageNumber="163">D</emphasis>
dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers
<emphasis id="58FE90D60E1E32EF9DEBB08D08B7C920" bold="true" pageId="0" pageNumber="163">E</emphasis>
dorsal view of chelifore claw
<emphasis id="D53D3AB599BD84E69B937B65CD191374" bold="true" pageId="0" pageNumber="163">F</emphasis>
ventral view of chelifore claw; note conical outgrowth
<emphasis id="CC92A0915658394CC6BDD8C7A54CBD5B" bold="true" pageId="0" pageNumber="163">G</emphasis>
dorsal view of proboscis with setose wreath H setose wreath around proboscis
<emphasis id="1159AD2626923034BD210277588E73FF" bold="true" pageId="0" pageNumber="163">I</emphasis>
dorsal view of eyespot
<emphasis id="6E275BBF628F5E53D29BCC0E56E8B2CE" bold="true" pageId="0" pageNumber="163">J</emphasis>
third walking leg
<emphasis id="08B20E9A24E2B5F41AA8CF06DC30C206" bold="true" pageId="0" pageNumber="163">K</emphasis>
first coxa of third walking leg
<emphasis id="D44DA09C53FA4D392EAE167492CA485F" bold="true" pageId="0" pageNumber="163">L</emphasis>
side view of second coxa of third walking leg
<emphasis id="DDC00032B65D60E2FE90E37241339F1A" bold="true" pageId="0" pageNumber="163">M</emphasis>
propodus of walking leg
<emphasis id="DBA149730377D4E06E3F8F62A4A2FDEA" bold="true" pageId="0" pageNumber="163">N</emphasis>
tubercles and spines on walking legs
<emphasis id="F78245C1ADCBDE69604E4586DA420289" bold="true" pageId="0" pageNumber="163">O</emphasis>
ovigerous leg of male
<emphasis id="358FEF9816C6956D12B5498A9FD30DF1" bold="true" pageId="0" pageNumber="163">P</emphasis>
strigilis of ovigerous leg
<emphasis id="39801947F7964582604BC51243BC6F7E" bold="true" pageId="0" pageNumber="163">Q</emphasis>
10th segment of oviger; note terminal spines
<emphasis id="68E49DA90DAA78BC8EA5A25C53DD5C78" bold="true" pageId="0" pageNumber="163">R</emphasis>
serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg.
</paragraph>
</caption>
<caption id="6139CA042C0F76BE70F959FD79000BFC" doi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163" start="Figure 3" startId="F3">
<paragraph id="9433923784D0E0FFCD5ECE81F99940CD" pageId="0" pageNumber="163">
<emphasis id="AAB1996F3DAD5E3B40DF52707804BB64" bold="true" pageId="0" pageNumber="163">Figure 3.</emphasis>
<taxonomicName id="8AB82307C06841289E490B56FBADD859" authorityName="Zehnpfennig &amp; Mahon" authorityYear="2023" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi">
<emphasis id="EA313299661466B7E52BDCCA8A148999" italics="true" pageId="0" pageNumber="163">Austropallene halanychi</emphasis>
</taxonomicName>
sp. nov., male holotype
<emphasis id="BAF36D4E6CA55FEE3CBFEDECE7CF6B52" bold="true" pageId="0" pageNumber="163">A</emphasis>
dorsal view
<emphasis id="EC0A10CCA34E5EF17653B2D68FEAEC6D" bold="true" pageId="0" pageNumber="163">B</emphasis>
dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow)
<emphasis id="38E7E0A19E745800F2FEF0A2FC7523C9" bold="true" pageId="0" pageNumber="163">C</emphasis>
eye tubercle, top view
<emphasis id="9AE4A1ECD6C306B9DD741258BF251424" bold="true" pageId="0" pageNumber="163">D</emphasis>
dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis
<emphasis id="6D16C2F66C3AAC6A84D4A4DECD263D4C" bold="true" pageId="0" pageNumber="163">E</emphasis>
setose wreath of proboscis
<emphasis id="AEC07B3E5FAE4BE70FD0B5F8DF7B6908" bold="true" pageId="0" pageNumber="163">F</emphasis>
dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow)
<emphasis id="E7DA3AC2F287DCEB1FA59D6D91553FCE" bold="true" pageId="0" pageNumber="163">G</emphasis>
dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger.
</paragraph>
</caption>
<paragraph id="427ECB5AEC24330F0968AE3A4888C17A" pageId="0" pageNumber="163">
Chelifore (Figs
<figureCitation id="2D634F35478BF6C4E15F5A13AB554495" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2D-F</figureCitation>
,
<figureCitation id="84AFD7CBB74EB8F79159A588C615ACE6" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3B, D, F, G</figureCitation>
), scape large and oblong, shorter than proboscis, directed slightly anteroventrally, slight tapering towards base; chelae long, 77.5% of scape length; tips of chela fingers blackened; fingers longer than one-half of palm length, fixed finger of chelifore concave with pointed tip. Movable finger 0.73 mm shorter than fixed finger, convex, with rounded tip. Chelifore fingers converge completely, no space present between fingers, denticles not present on inner surface of either finger. Two small conical outgrowths present where fingers of chelifore claw meet (Fig.
<figureCitation id="CFC6A8D880D7DC31984767AA0A9D2052" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger." figureDoi="10.3897/zookeys.1185.108286.figure3" httpUri="https://binary.pensoft.net/fig/943966" pageId="0" pageNumber="163">3B</figureCitation>
, arrow). Chelifore scape and claw contain small setae along dorsal and ventral sides.
</paragraph>
<paragraph id="9BED5B306B7DC865DE8FB3EF02519F4F" pageId="0" pageNumber="163">
Oviger 10-segmented (Figs
<figureCitation id="5CD6FB77E30EA0C83FCEF9BDE33E8C63" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2O-R</figureCitation>
,
<figureCitation id="857CF123F8B87D4F0808D8DC37C25C83" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Austropallene halanychi sp. nov., male holotype A oviger, entire B strigilis, close-up view showing compound spines on segments 7 - 10 C compound spines on segment 9 D compound spines on segment 9 E strigilis, side view, showing compound spines on segments 7 - 10 (some spines on segment 10 are damaged or missing) F segments 8 - 10 with compound spines, and segment 10 with two terminal spines G segment 10, top view, close-up, with two terminal compound spines." figureDoi="10.3897/zookeys.1185.108286.figure4" httpUri="https://binary.pensoft.net/fig/943967" pageId="0" pageNumber="163">4A-G</figureCitation>
), fifth segment longest, slightly curved, with prominent apophysis distally; oviger compound spines serrated, present on terminal four segments of the strigillis, strigilis formula: 20:20:18:18, with 2 prominent terminal spines. Some of the spines are broken off (Fig.
<figureCitation id="BCD6F242A085FBC0A78066AA6F8A6038" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Austropallene halanychi sp. nov., male holotype A oviger, entire B strigilis, close-up view showing compound spines on segments 7 - 10 C compound spines on segment 9 D compound spines on segment 9 E strigilis, side view, showing compound spines on segments 7 - 10 (some spines on segment 10 are damaged or missing) F segments 8 - 10 with compound spines, and segment 10 with two terminal spines G segment 10, top view, close-up, with two terminal compound spines." figureDoi="10.3897/zookeys.1185.108286.figure4" httpUri="https://binary.pensoft.net/fig/943967" pageId="0" pageNumber="163">4E, F</figureCitation>
).
</paragraph>
<caption id="DEFDB742CBE51113F1062F48B0F62BD7" doi="10.3897/zookeys.1185.108286.figure4" httpUri="https://binary.pensoft.net/fig/943967" pageId="0" pageNumber="163" start="Figure 4" startId="F4">
<paragraph id="2B4B88E664BBD6704DABA3E47FECD3EF" pageId="0" pageNumber="163">
<emphasis id="2E3D17CED966364186B5D58453A7DE1E" bold="true" pageId="0" pageNumber="163">Figure 4.</emphasis>
<taxonomicName id="21CF047776AC545942B600F8122B8CCD" authorityName="Zehnpfennig &amp; Mahon" authorityYear="2023" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi">
<emphasis id="D0D06F0263B1128ED23B7B10652DC48E" italics="true" pageId="0" pageNumber="163">Austropallene halanychi</emphasis>
</taxonomicName>
sp. nov., male holotype
<emphasis id="90F1C98EC9E7DBB7A9311BBBDD7CBFCE" bold="true" pageId="0" pageNumber="163">A</emphasis>
oviger, entire
<emphasis id="8CE4606E24AD56216B9B09B28D8AE7FF" bold="true" pageId="0" pageNumber="163">B</emphasis>
strigilis, close-up view showing compound spines on segments 7-10
<emphasis id="BF8302FA99F797EA3F83B16A26686B4D" bold="true" pageId="0" pageNumber="163">C</emphasis>
compound spines on segment 9
<emphasis id="B7B0E6D7790F484342625D640A004022" bold="true" pageId="0" pageNumber="163">D</emphasis>
compound spines on segment 9
<emphasis id="E8C611A56F86E29FDF5F83C31357BE23" bold="true" pageId="0" pageNumber="163">E</emphasis>
strigilis, side view, showing compound spines on segments 7-10 (some spines on segment 10 are damaged or missing)
<emphasis id="1A42ECF949529B03E3F2F270FD7CC6C1" bold="true" pageId="0" pageNumber="163">F</emphasis>
segments 8-10 with compound spines, and segment 10 with two terminal spines
<emphasis id="18F47958190BEC861FA265E78C2566F4" bold="true" pageId="0" pageNumber="163">G</emphasis>
segment 10, top view, close-up, with two terminal compound spines.
</paragraph>
</caption>
<paragraph id="301C3096671CB79EE0C10E23D96E4FE7" pageId="0" pageNumber="163">
Walking legs (Fig.
<figureCitation id="A209A01D3A2D28152582C1625396BAA6" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10 th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg." figureDoi="10.3897/zookeys.1185.108286.figure2" httpUri="https://binary.pensoft.net/fig/943965" pageId="0" pageNumber="163">2J-N</figureCitation>
), long, slender, sparse short spinules dorsally and ventrally on major segments; small conical tubercles and setae on first coxa. Femur shortest leg segment; tibia 2 longest segment; tarsus short, curved, small distal spine in line with heel spines; propodus curved, distinct propodal heel; five heel spines, relatively similar in size; many sole spines present; auxiliary claws absent, main claw extends nearly to heel. Gonopores and cement glands not observed.
</paragraph>
</subSubSection>
<subSubSection id="F10D83FC2611F4D245BB209AC4B608FC" pageId="0" pageNumber="163" type="description">
<paragraph id="4AEFB3C411FDEDD12F32BDF735CFBC0A" pageId="0" pageNumber="163">Measurements (male holotype-mm).</paragraph>
<paragraph id="D224828F11E536F10B5069AC9D9B2765" pageId="0" pageNumber="163">Body length (anterior end of cephalon to posterior end of trunk) = 10.50; body width (right lateral process of leg 1 + width of trunk + left lateral process of leg 1) = 4.02; trunk width = 1.24; abdomen length = 6.97; ocular tubercle height = 0.39; proboscis length = 2.73; chela fingers = 2.61; main claw length = 3.37; scape = 2.39; oviger 5th segment = 4.18; 10th segment = 0.74; terminal oviger spines = 0.10; leg span 63.84mm (distance between terminal claws second pair of walking legs); walking legs 29.78 mm in length (from where first coxa meets lateral process to terminal claw on second pair of walking legs); 3rd walking leg coxa 1 = 1.23, coxa 2 = 2.60, coxa 3 = 1.17, femur = 6.69, tibia 1 = 6.85, tibia 2 = 7.89, tarsus = 0.32, propodus = 1.95, terminal claw = 1.39.</paragraph>
</subSubSection>
<subSubSection id="D1754BB9822400764A9325E8130E9DA6" pageId="0" pageNumber="163" type="etymology">
<paragraph id="1FEBC6228FE908629F14E6D4AA76B1C1" pageId="0" pageNumber="163">Etymology.</paragraph>
<paragraph id="1C1760147C02B20965042FC33B8F8EA2" pageId="0" pageNumber="163">
The species (
<taxonomicName id="B8A56EF738C5AACA213C96B3D1A2E3E3" authorityName="Zehnpfennig &amp; Mahon" authorityYear="2023" class="Pycnogonida" family="Callipallenidae" genus="Austropallene" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Austropallene halanychi" order="Pantopoda" pageId="0" pageNumber="163" phylum="Arthropoda" rank="species" species="halanychi">
<emphasis id="AF09560830FF0B8054F3D3220E1654C7" italics="true" pageId="0" pageNumber="163">Austropallene halanychi</emphasis>
</taxonomicName>
, male genitive) is dedicated to Dr Kenneth M. Halanych, a mentor, colleague, and prolific marine invertebrate scientist whose commitment and dedication to the benthic marine systems in the Southern Ocean has provided a wealth of information related to biodiversity in the Antarctic system.
</paragraph>
</subSubSection>
</treatment>
</document>