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<mods:title id="C1AB17FEE718C459FF9F1997AE109FCC">Leptognathiidae Sieg, 1976 *</mods:title>
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<emphasis id="B9411E46FF95757E48F7FF661C6DFF7A" bold="true" box="[151,572,151,177]" pageId="3" pageNumber="64">
Genus
<taxonomicName id="4C35B9D7FF95757E488DFF661C6DFF7A" ID-CoL="84TN9" authority="Lang, 1972" authorityName="Lang" authorityYear="1972" box="[237,572,151,177]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E488DFF661FFBFF7A" bold="true" box="[237,426,151,177]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
<bibRefCitation id="EFA4BFA5FF95757E49D2FF661C6DFF7A" author="Lang" box="[434,572,151,177]" pageId="3" pageNumber="84" refString="Lang, K. (1972) Siphonolabrum mirabile n. gen. n. sp. Crustaceana Supplement, 3, 214 - 220." type="journal article" year="1972">Lang, 1972</bibRefCitation>
</taxonomicName>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C32F91DFFF95757E48F7FF131F8CFE72" pageId="3" pageNumber="64" type="reference_group">
<paragraph id="8B8AC254FF95757E48F7FF131A77FED2" blockId="3.[151,1437,226,473]" pageId="3" pageNumber="64">
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<taxonomicName id="4C35B9D7FF95757E48F7FF131FA5FF32" ID-CoL="84TN9" authority="Lang, 1971: 361" authorityName="Lang" authorityPageNumber="361" authorityYear="1971" box="[151,500,226,249]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E48F7FF131F6DFF32" box="[151,316,226,249]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
<treatmentCitation id="0A94E445FF95757E4922FF131FA5FF32" author="Lang" box="[322,500,226,249]" page="361" pageId="3" pageNumber="64" year="1971">
<bibRefCitation id="EFA4BFA5FF95757E4922FF131F91FF32" author="Lang" box="[322,448,226,249]" pageId="3" pageNumber="84" refString="Lang, K. (1971) Taxonomische und phylogenetische Untersuchungen uber die Tanaidaceen. 6. Revision der Gattung Paranarthrura Hansen, 1913, und Aufstellung von zwei neuen Familien, vier neuen Gattungen und zwei neuen Arten. Arkiv for Zoologi, 23 (5), 361 - 340." type="journal article" year="1971">Lang, 1971</bibRefCitation>
: 361
</treatmentCitation>
</taxonomicName>
, 365 (remarks), 367 (key to genera), as
<emphasis id="B9411E46FF95757E4BC0FF131A67FF32" box="[928,1078,226,249]" italics="true" pageId="3" pageNumber="64">nomen nudum</emphasis>
.
<treatmentCitation id="0A94E445FF95757E4C2BFF131B51FF32" author="Sieg" box="[1099,1280,226,249]" page="140" pageId="3" pageNumber="64" year="1986">
<bibRefCitation id="EFA4BFA5FF95757E4C2BFF131A9FFF32" author="Sieg" box="[1099,1230,226,249]" pageId="3" pageNumber="85" refString="Sieg, J. (1986 b) Crustacea Tanaidacea of the Antarctic and the Subantarctic. 1. On material collected at Tierra del Fuego, Isla de los Estados, and the West Coast of the Antarctic Peninsula. Biology of the Antarctic Seas XVIII, ed. L. S. Korniker, Antarctic Research Series 45, American Geophysical Union, 180 pp." type="book" year="1986" yearSuffix="b">Sieg, 1986b</bibRefCitation>
: 140
</treatmentCitation>
142 (remarks on genus and key to species), 142152, figs 9599 (description of
<taxonomicName id="4C35B9D7FF95757E4BEBFEF31A46FED2" ID-CoL="4XQ22" box="[907,1047,258,281]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="fastigatum">
<emphasis id="B9411E46FF95757E4BEBFEF31A46FED2" box="[907,1047,258,281]" italics="true" pageId="3" pageNumber="64">S. fastigatum</emphasis>
</taxonomicName>
).
</treatmentCitationGroup>
</paragraph>
<paragraph id="8B8AC254FF95757E48F7FED31F8CFE72" blockId="3.[151,1437,226,473]" pageId="3" pageNumber="64">
<treatmentCitationGroup id="AB25E57AFF95757E48F7FED31F8CFE72" pageId="3" pageNumber="64">
<taxonomicName id="4C35B9D7FF95757E48F7FED31FA2FEF2" ID-CoL="84TN9" authority="Lang, 1972: 214" authorityName="Lang" authorityPageNumber="214" authorityYear="1972" box="[151,499,290,313]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E48F7FED31F6DFEF2" box="[151,316,290,313]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
<treatmentCitation id="0A94E445FF95757E4922FED31FA2FEF2" author="Lang" box="[322,499,290,313]" page="214" pageId="3" pageNumber="64" year="1972">
<bibRefCitation id="EFA4BFA5FF95757E4922FED31F91FEF2" author="Lang" box="[322,448,290,313]" pageId="3" pageNumber="84" refString="Lang, K. (1972) Siphonolabrum mirabile n. gen. n. sp. Crustaceana Supplement, 3, 214 - 220." type="journal article" year="1972">Lang, 1972</bibRefCitation>
: 214
</treatmentCitation>
</taxonomicName>
(generic diagnosis), 214221, figs 14, plate 1 (description of
<taxonomicName id="4C35B9D7FF95757E4CF6FED31B5AFEF2" ID-CoL="4XQ24" box="[1174,1291,290,313]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="mirabile">
<emphasis id="B9411E46FF95757E4CF6FED31B5AFEF2" box="[1174,1291,290,313]" italics="true" pageId="3" pageNumber="64">S. mirabile</emphasis>
</taxonomicName>
).
<treatmentCitation id="0A94E445FF95757E4D42FED31EBEFE92" author="Sieg" page="299" pageId="3" pageNumber="64" year="1983">
<bibRefCitation id="EFA4BFA5FF95757E4D42FED31BC9FEF2" author="Sieg" box="[1314,1432,290,313]" pageId="3" pageNumber="85" refString="Sieg, J. (1983) Tanaidacea. Crustaceorum Catalogus Pars 6, H. E. Gruner &amp; L. B. Holthuis (eds), Dr. W. Junk publishers, The Hague, 552 pp." type="book" year="1983">Sieg, 1983</bibRefCitation>
: 299
</treatmentCitation>
300 (bibliography).
<treatmentCitation id="0A94E445FF95757E49B9FEB31D63FE92" author="Kudinova-Pasternak" box="[473,818,322,345]" page="108" pageId="3" pageNumber="64" year="1984">
<bibRefCitation id="EFA4BFA5FF95757E49B9FEB31CADFE92" author="Kudinova-Pasternak" box="[473,764,322,345]" pageId="3" pageNumber="84" refString="Kudinova-Pasternak, R. K. (1984). Tanaidacea (Crustacea, Malacostraca) from the Sea of Japan. Zooloogeskij Zhurnal, 63, 828 - 837." type="journal article" year="1984">Kudinova-Pasternak, 1984</bibRefCitation>
: 108
</treatmentCitation>
109, figs 1011 (description of
<taxonomicName id="4C35B9D7FF95757E4CC0FEB31AA4FE92" ID-CoL="DGLD" box="[1184,1269,322,345]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="langi">
<emphasis id="B9411E46FF95757E4CC0FEB31AA4FE92" box="[1184,1269,322,345]" italics="true" pageId="3" pageNumber="64">S. langi</emphasis>
</taxonomicName>
).
<bibRefCitation id="EFA4BFA5FF95757E4D6EFEB31F41FEB2" author="Gutu" pageId="3" pageNumber="84" refString="Gutu, M. &amp; Sieg, J. (1999) Ordres des Tanaidaces (Tanaidacea Hansen, 1895). Memoires de l'Institut oceanographique, Monaco, 19, 353 - 389." type="journal article" year="1999">Gutu &amp; Sieg (1999)</bibRefCitation>
, 384 (classification).
<treatmentCitation id="0A94E445FF95757E4998FE931D56FEB2" author="Dojiri" box="[504,775,354,377]" page="220" pageId="3" pageNumber="64" year="1997">
<bibRefCitation id="EFA4BFA5FF95757E4998FE931C83FEB2" author="Dojiri" box="[504,722,354,377]" pageId="3" pageNumber="84" refString="Dojiri, M. &amp; Sieg, J. (1997) The Tanaidacea. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and western Santa Barbara Channel, Vol. 11 - The Crustacea Part 2, The Isopoda, Cumacea and Tanaidacea. Santa Barbara Museum of Natural History, Santa Barbara, p. 181 - 268." type="book chapter" year="1997">Dojiri &amp; Sieg, 1997</bibRefCitation>
: 220
</treatmentCitation>
224, figs 3.123.13 (description of
<taxonomicName id="4C35B9D7FF95757E4CEFFE931B6DFEB2" ID-CoL="4XPZZ" box="[1167,1340,354,377]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="californiensis">
<emphasis id="B9411E46FF95757E4CEFFE931B6DFEB2" box="[1167,1340,354,377]" italics="true" pageId="3" pageNumber="64">S. californiensis</emphasis>
</taxonomicName>
).
<treatmentCitation id="0A94E445FF95757E4D33FE931FF0FE52" author="Larsen" page="12" pageId="3" pageNumber="64" year="2002">
<bibRefCitation id="EFA4BFA5FF95757E4D33FE931F29FE52" author="Larsen" pageId="3" pageNumber="85" refString="Larsen, K. &amp; Wilson, G. D. F. (2002) Tanaidacean phylogeny, the first step: the Superfamily Paratanoidea. Journal of Zoological Systematics and Evolutionary Research, 40, 1 - 19." type="journal article" year="2002">Larsen &amp; Wilson, 2002</bibRefCitation>
: 12
</treatmentCitation>
, 14 (classification derived from phylogenetic analysis).
<treatmentCitation id="0A94E445FF95757E4C65FE731AC9FE52" author="Bird" box="[1029,1176,386,409]" page="2" pageId="3" pageNumber="64" year="2004">
<bibRefCitation id="EFA4BFA5FF95757E4C65FE731A2CFE52" author="Bird" box="[1029,1149,386,409]" pageId="3" pageNumber="83" refString="Bird, G. J. (2004) Tanaidacea (Crustacea) of the Northeast Atlantic: non-filiform species of Anarthruridae Lang from the Atlantic Margin. Zootaxa, 471, 1 - 44." type="journal article" year="2004">Bird, 2004</bibRefCitation>
: 2
</treatmentCitation>
, 78 (remarks). Larsen, 2006: 141, 142 (remarks).
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C32F91DFFF95757E48F7FE331A76FD57" pageId="3" pageNumber="64" type="materials_examined">
<paragraph id="8B8AC254FF95757E48F7FE331D02FE12" blockId="3.[151,1437,226,473]" box="[151,851,450,473]" pageId="3" pageNumber="64">
<typeStatus id="548E7CF6FF95757E48F7FE331E9DFE12" box="[151,204,450,473]" pageId="3" pageNumber="64">Type</typeStatus>
species:
<taxonomicName id="4C35B9D7FF95757E494DFE331CE4FE12" authority="Lang, 1972" authorityName="Lang" authorityYear="1972" box="[301,693,450,473]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="mirabile">
<emphasis id="B9411E46FF95757E494DFE331C62FE12" box="[301,563,450,473]" italics="true" pageId="3" pageNumber="64">Siphonolabrum mirabile</emphasis>
<bibRefCitation id="EFA4BFA5FF95757E4A59FE331CE4FE12" author="Lang" box="[569,693,450,473]" pageId="3" pageNumber="84" refString="Lang, K. (1972) Siphonolabrum mirabile n. gen. n. sp. Crustaceana Supplement, 3, 214 - 220." type="journal article" year="1972">Lang, 1972</bibRefCitation>
</taxonomicName>
, by monotypy.
</paragraph>
<paragraph id="8B8AC254FF95757E48F7FDFB1A76FD57" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
<emphasis id="B9411E46FF95757E48F7FDFB1F26FDEF" bold="true" box="[151,375,522,548]" pageId="3" pageNumber="64">Species included (</emphasis>
Japanese and trench species in bold):
<taxonomicName id="4C35B9D7FF95757E4B54FDFB1AB4FDEF" authority="Dojiri &amp; Sieg, 1997" authorityName="Dojiri &amp; Sieg" authorityYear="1997" box="[820,1253,522,548]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="californiensis">
<emphasis id="B9411E46FF95757E4B54FDFB1DA0FDE8" box="[820,1009,522,547]" italics="true" pageId="3" pageNumber="64">S. californiensis</emphasis>
<bibRefCitation id="EFA4BFA5FF95757E4B9AFDFB1AB4FDEF" author="Dojiri" box="[1018,1253,522,548]" pageId="3" pageNumber="84" refString="Dojiri, M. &amp; Sieg, J. (1997) The Tanaidacea. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and western Santa Barbara Channel, Vol. 11 - The Crustacea Part 2, The Isopoda, Cumacea and Tanaidacea. Santa Barbara Museum of Natural History, Santa Barbara, p. 181 - 268." type="book chapter" year="1997">Dojiri &amp; Sieg, 1997</bibRefCitation>
</taxonomicName>
(Santa Barbara Channel, California, 98 metres);
<taxonomicName id="4C35B9D7FF95757E4A76FDC31D63FD87" authority="Sieg, 1986" authorityName="Sieg" authorityYear="1986" box="[534,818,562,588]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="fastigatum">
<emphasis id="B9411E46FF95757E4A76FDC31CFEFD80" box="[534,687,562,587]" italics="true" pageId="3" pageNumber="64">S. fastigatum</emphasis>
Sieg, 1986
</taxonomicName>
(Joubin Islands,
<collectingCountry id="F32282C4FF95757E4B98FDC31A34FD87" box="[1016,1125,562,588]" name="Antarctica" pageId="3" pageNumber="64">Antarctic</collectingCountry>
Peninsula, 4975 metres);
<taxonomicName id="4C35B9D7FF95757E48F7FDAB1EA2FDB8" box="[151,243,602,627]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="langi">
<emphasis id="B9411E46FF95757E48F7FDAB1EA2FDB8" box="[151,243,602,627]" italics="true" pageId="3" pageNumber="64">S. langi</emphasis>
</taxonomicName>
, (Central Pacific,
<date id="FF8BE494FF95757E49B2FDAB1C07FDBF" box="[466,598,602,628]" pageId="3" pageNumber="64" value="1735" valueMax="2430">17352430</date>
metres);
<taxonomicName id="4C35B9D7FF95757E4AAAFDAB1D1CFDB8" box="[714,845,602,627]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="mirabile">
<emphasis id="B9411E46FF95757E4AAAFDAB1D1CFDB8" box="[714,845,602,627]" italics="true" pageId="3" pageNumber="64">S. mirabile</emphasis>
</taxonomicName>
, (
<collectingCountry id="F32282C4FF95757E4B07FDAB1DB9FDBF" box="[871,1000,602,628]" name="Guatemala" pageId="3" pageNumber="64">Guatemala</collectingCountry>
Basin [Central East Pacific], 3534 3563 metres, and the Azores [NE Atlantic], 4165 metres);
<emphasis id="B9411E46FF95757E4B25FD731A71FD57" bold="true" box="[837,1056,642,668]" pageId="3" pageNumber="64">
<taxonomicName id="4C35B9D7FF95757E4B25FD731DB7FD57" box="[837,998,642,668]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="tenebrosus" status="sp. nov.">
<emphasis id="B9411E46FF95757E4B25FD731DB7FD57" bold="true" box="[837,998,642,668]" italics="true" pageId="3" pageNumber="64">S. tenebrosus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A272A33DFF95757E4B8DFD731A71FD57" box="[1005,1056,642,668]" pageId="3" pageNumber="64" rank="species">n.sp</taxonomicNameLabel>
</emphasis>
.
</paragraph>
</subSubSection>
<subSubSection id="C32F91DFFF95757E48A6FD5B1B54FD0F" box="[198,1285,682,708]" pageId="3" pageNumber="64" type="diagnosis">
<paragraph id="8B8AC254FF95757E48A6FD5B1B54FD0F" blockId="3.[151,1437,522,2028]" box="[198,1285,682,708]" pageId="3" pageNumber="64">
<emphasis id="B9411E46FF95757E48A6FD5B1F6EFD0F" bold="true" box="[198,319,682,708]" pageId="3" pageNumber="64">Diagnosis</emphasis>
(largely derived from
<bibRefCitation id="EFA4BFA5FF95757E4A27FD5B1C89FD0F" author="Lang" box="[583,728,682,708]" pageId="3" pageNumber="84" refString="Lang, K. (1972) Siphonolabrum mirabile n. gen. n. sp. Crustaceana Supplement, 3, 214 - 220." type="journal article" year="1972">Lang (1972)</bibRefCitation>
and
<bibRefCitation id="EFA4BFA5FF95757E4B72FD5B1DFBFD0F" author="Sieg" box="[786,938,682,708]" pageId="3" pageNumber="85" refString="Sieg, J. (1986 b) Crustacea Tanaidacea of the Antarctic and the Subantarctic. 1. On material collected at Tierra del Fuego, Isla de los Estados, and the West Coast of the Antarctic Peninsula. Biology of the Antarctic Seas XVIII, ed. L. S. Korniker, Antarctic Research Series 45, American Geophysical Union, 180 pp." type="book" year="1986" yearSuffix="b">Sieg (1986b)</bibRefCitation>
but with some amendments).
</paragraph>
</subSubSection>
<subSubSection id="C32F91DFFF95757E48A6FD231CD2FB07" pageId="3" pageNumber="64" type="description">
<paragraph id="8B8AC254FF95757E48A6FD231E81FB9F" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
<emphasis id="B9411E46FF95757E48A6FD231F3EFD20" box="[198,367,722,747]" italics="true" pageId="3" pageNumber="64">Female/neuter</emphasis>
. Anarthrurid with pleon with five pleonites, about as wide as the pereonite 6 and pleotelson. Antennule of female four-articled. Antenna six-articled (but see below), terminal article very small. Labrum prominent, narrower than deep. Mandibles translucent and weak, incisor narrow, with denticulate tip, molar and lacinia mobilis lacking. Epignath with short terminal seta. Maxillule with eight unequal terminal setae. Maxilliped palp article 3 with three long setae; endite with one long seta. Cheliped propodus and fixed finger without fold, but with longitudinal ridge on latter; fixed finger with one ventral seta and two prominent teeth on incisive margin. Dactylus of pereopods 13 with long accessory seta. Carpus of pereopods 46 with three spiniform and one rod-like seta. Pleopods well-developed, biramous, with setae. Uropod exopod fused with basal article, short or as long as proximal article of endopod, with two terminal setae; endopod two-articled.
</paragraph>
<paragraph id="8B8AC254FF95757E48A6FB921CD2FB07" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
<emphasis id="B9411E46FF95757E48A6FB921F52FBB7" box="[198,259,1123,1148]" italics="true" pageId="3" pageNumber="64">Male</emphasis>
with enlarged pleon; antennule seven-articled (two-articled peduncle and five-articled flagellum), cheliped fixed finger with reduced teeth, pleopod with longer setae than female, uropod exopod articulated from basal article, endopod three-articled.
</paragraph>
</subSubSection>
<subSubSection id="C32F91DFFF95757E48A6FB2B1D7BF827" pageId="3" pageNumber="64" type="discussion">
<paragraph id="8B8AC254FF95757E48A6FB2B1FC6F9FF" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
<emphasis id="B9411E46FF95757E48A6FB2B1F6EFB3F" bold="true" box="[198,319,1242,1268]" pageId="3" pageNumber="64">Remarks.</emphasis>
Although the generic distinctions of
<taxonomicName id="4C35B9D7FF95757E4A98FB2A1DFCFB3F" box="[760,941,1243,1268]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E4A98FB2A1DFCFB3F" box="[760,941,1243,1268]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
</taxonomicName>
from
<taxonomicName id="4C35B9D7FF95757E4B96FB2A1AF9FB3F" box="[1014,1192,1243,1268]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E4B96FB2A1AF9FB3F" box="[1014,1192,1243,1268]" italics="true" pageId="3" pageNumber="64">Anarthruropsis</emphasis>
</taxonomicName>
are said to be minor (
<bibRefCitation id="EFA4BFA5FF95757E48FFFAF31F7AFAD7" author="Sieg" box="[159,299,1282,1308]" pageId="3" pageNumber="85" refString="Sieg, J. (1986 b) Crustacea Tanaidacea of the Antarctic and the Subantarctic. 1. On material collected at Tierra del Fuego, Isla de los Estados, and the West Coast of the Antarctic Peninsula. Biology of the Antarctic Seas XVIII, ed. L. S. Korniker, Antarctic Research Series 45, American Geophysical Union, 180 pp." type="book" year="1986" yearSuffix="b">Sieg 1986b</bibRefCitation>
; Larsen 2005), i.e. restricted to the number of maxillule endite spines and labrum shape, other characters appear to be valid, consistent and useful for making identifications: the probable existence of a mandibular molar in
<taxonomicName id="4C35B9D7FF95757E49EFFAA21C10FAA7" box="[399,577,1363,1388]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E49EFFAA21C10FAA7" box="[399,577,1363,1388]" italics="true" pageId="3" pageNumber="64">Anarthruropsis</emphasis>
</taxonomicName>
(for the
<typeStatus id="548E7CF6FF95757E4AC9FAA31C8DFAA7" box="[681,732,1362,1388]" pageId="3" pageNumber="64">type</typeStatus>
species
<taxonomicName id="4C35B9D7FF95757E4B20FAA21D85FAA7" box="[832,980,1363,1388]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="galatheae">
<emphasis id="B9411E46FF95757E4B20FAA21D85FAA7" box="[832,980,1363,1388]" italics="true" pageId="3" pageNumber="64">A. galatheae</emphasis>
</taxonomicName>
at least), one long seta on each maxilliped endite in
<taxonomicName id="4C35B9D7FF95757E492DFA8A1C50FA5F" box="[333,513,1403,1428]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E492DFA8A1C50FA5F" box="[333,513,1403,1428]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
</taxonomicName>
, rather than two small setae; one ventral cheliped fixed finger in
<taxonomicName id="4C35B9D7FF95757E4D7BFA8A1E84FA77" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E4D7BFA8A1E84FA77" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
</taxonomicName>
although
<taxonomicName id="4C35B9D7FF95757E4904FA521FBAFA77" box="[356,491,1443,1468]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="edentula">
<emphasis id="B9411E46FF95757E4904FA521FBAFA77" box="[356,491,1443,1468]" italics="true" pageId="3" pageNumber="64">A. edentula</emphasis>
</taxonomicName>
also has only one (possibly because only manca-II stages were described), and two prominent teeth on the fixed finger in
<taxonomicName id="4C35B9D7FF95757E4AE4FA3A1D69FA2F" box="[644,824,1483,1508]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E4AE4FA3A1D69FA2F" box="[644,824,1483,1508]" italics="true" pageId="3" pageNumber="64">Siphonolabrum</emphasis>
</taxonomicName>
. A more detailed revision of the two genera is desirable but is beyond the scope of this paper, as are analyses of phylogenetic relationships within and without the family
<taxonomicName id="4C35B9D7FF95757E488BF9EB1FC5F9FF" box="[235,404,1562,1588]" class="Malacostraca" family="Anarthruridae" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="family">Anarthruridae</taxonomicName>
.
</paragraph>
<paragraph id="8B8AC254FF95757E48A6F9B31FDFF91F" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
There may be an issue with the character-state given for the number of antennal articles, since the small article figured by most authors and also in this paper (
<figureCitation id="130EDED1FF95757E4B22F99B1DF8F94F" box="[834,937,1642,1668]" captionStart="FIGURE 2" captionStartId="5.[151,254,1904,1928]" captionTargetBox="[439,1147,844,1861]" captionTargetId="figure@5.[423,1171,821,1878]" captionTargetPageId="5" captionText="FIGURE 2. Siphonolabrum tenebrosus n. sp. Non-ovigerous female. A, cheliped fixed finger detail; B, antennule, C, antenna (lateral view); D E, labrum dorsal and lateral profile respectively; F, mandible; G, maxilla; H, maxillule endite, I, maxilliped palp, one omitted; J, maxilliped endite (distal); K, uropod. Scale bar = 0.25 mm for A-E, G, I-K, 0.125 mm for F and H." httpUri="https://zenodo.org/record/178700/files/figure.png" pageId="3" pageNumber="64">Figure 2</figureCitation>
C) could be a basal peduncle, so that the actual article-number state could be five rather than six. Ideally, scanning-electron-microscope study might resolve this problem.
</paragraph>
<paragraph id="8B8AC254FF95757E48A6F9131AA2F8BF" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
Of the four previously described species,
<taxonomicName id="4C35B9D7FF95757E4AD2F9121D5DF937" box="[690,780,1763,1788]" class="Malacostraca" family="Anarthruridae" genus="Anarthruropsis" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="langi">
<emphasis id="B9411E46FF95757E4AD2F9121D5DF937" box="[690,780,1763,1788]" italics="true" pageId="3" pageNumber="64">S. langi</emphasis>
</taxonomicName>
seems to be of dubious status within the genus, at least because the uropod exopod is shown by
<bibRefCitation id="EFA4BFA5FF95757E4A16F8FB1DEDF8EF" author="Kudinova-Pasternak" box="[630,956,1802,1828]" pageId="3" pageNumber="84" refString="Kudinova-Pasternak, R. K. (1981) Tanaidacea. In: Miranov A. V. [ed.] Benthos of the submarine mountains Marcus- Vecker and adjacent Pacific regions. Akademija Nauk SSSR, P. P. Shirshov Institute of oceanology, 94 - 112." type="book chapter" year="1981">Kudinova-Pasternak (1981)</bibRefCitation>
as being discrete, not fused. In addition, the cheliped shape is more similar to those of some other taxa such as
<taxonomicName id="4C35B9D7FF95757E4B94F8C21E83F8BF" authority="Kudinova-Pasternak, 1983" authorityName="Kudinova-Pasternak" authorityYear="1983" class="Malacostraca" genus="Robustochelia" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="genus">
<emphasis id="B9411E46FF95757E4B94F8C21ACAF887" box="[1012,1179,1843,1868]" italics="true" pageId="3" pageNumber="64">Robustochelia</emphasis>
<bibRefCitation id="EFA4BFA5FF95757E4CC5F8C31E83F8BF" author="Kudinova-Pasternak" pageId="3" pageNumber="84" refString="Kudinova-Pasternak, R. K. (1983) The abyssal Tanaidacea (Crustacea) of the Iberian and West-European hollows of the Atlantic Ocean. Zooloogeskij Zhurnal, 62 (8), 1170 - 1176." type="journal article" year="1983">Kudinova-Pasternak, 1983</bibRefCitation>
</taxonomicName>
albeit having the anarthrurid or agathotanaid form of the attachment to the cephalothorax.
</paragraph>
<paragraph id="8B8AC254FF95757E48A6F8731D7BF827" blockId="3.[151,1437,522,2028]" pageId="3" pageNumber="64">
Apart from a dubious record (of a
<taxonomicName id="4C35B9D7FF95757E4A12F8731CEEF857" box="[626,703,1922,1948]" class="Malacostraca" family="Leptognathiidae" genus="Leptognathia" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="manca">manca</taxonomicName>
stage) from the North-East Atlantic (Azores) of
<taxonomicName id="4C35B9D7FF95757E4D78F8721F7FF80F" authority="Lang 1972" authorityName="Lang" authorityYear="1972" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="mirabile">
<emphasis id="B9411E46FF95757E4D78F8721BCDF857" box="[1304,1436,1923,1948]" italics="true" pageId="3" pageNumber="64">S. mirabile</emphasis>
(
<bibRefCitation id="EFA4BFA5FF95757E48FFF85B1F74F80F" author="Lang" box="[159,293,1962,1988]" pageId="3" pageNumber="84" refString="Lang, K. (1972) Siphonolabrum mirabile n. gen. n. sp. Crustaceana Supplement, 3, 214 - 220." type="journal article" year="1972">Lang 1972</bibRefCitation>
)
</taxonomicName>
, the genus appears to be known so far only from the Pacific Ocean—the
<taxonomicName id="4C35B9D7FF95757E4CC1F85A1B6CF80F" box="[1185,1341,1963,1988]" class="Malacostraca" family="Anarthruridae" genus="Siphonolabrum" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="64" phylum="Arthropoda" rank="species" species="fastigatum">
<emphasis id="B9411E46FF95757E4CC1F85A1B6CF80F" box="[1185,1341,1963,1988]" italics="true" pageId="3" pageNumber="64">S. fastigatum</emphasis>
</taxonomicName>
records coming from the Pacific side of the
<collectingCountry id="F32282C4FF95757E4A5BF8231CF9F827" box="[571,680,2002,2028]" name="Antarctica" pageId="3" pageNumber="64">Antarctic</collectingCountry>
Peninsula.
</paragraph>
</subSubSection>
</treatment>
</document>