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<document id="F518290B5662A535A8B1618AE3ED06C8" ID-DOI="10.11646/zootaxa.3619.3.3" ID-GBIF-Dataset="2719c069-24fe-4cd6-967d-aea11f80e344" ID-ISSN="1175-5326" ID-Zenodo-Dep="221852" ID-ZooBank="92C07D63-F2F5-4898-A7FE-4937F4D5A043" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460577976854" checkinUser="plazi" docAuthor="Cavalcanti, Fernanda F., Rapp, Hans Tore &amp; Klautau, Michelle" docDate="2013" docId="038E706DEC0F7459FF1728E6C0D9FE73" docLanguage="en" docName="zt03619p314.pdf" docOrigin="Zootaxa 3619 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ascoleucetta amitsba Hozawa 1929, comb. nov." docType="treatment" docVersion="10" lastPageNumber="303" masterDocId="FFB70815EC147445FF802B45C42DFF87" masterDocTitle="Taxonomic revision of Leucascus Dendy, 1892 (Porifera: Calcarea) with revalidation of Ascoleucetta Dendy &amp; Frederick, 1924 and description of three new species" masterLastPageNumber="314" masterPageNumber="275" pageNumber="302" updateTime="1698323617962" updateUser="plazi">
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<mods:title id="E14297B358B7B27D2C180B67BF45A6F1">Taxonomic revision of Leucascus Dendy, 1892 (Porifera: Calcarea) with revalidation of Ascoleucetta Dendy &amp; Frederick, 1924 and description of three new species</mods:title>
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<mods:namePart id="76A0DCD9352A975F0E9C52A93B584E2E">Cavalcanti, Fernanda F.</mods:namePart>
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<mods:namePart id="2F07BB81A7BD13C3AFF9B2A028CB6185">Rapp, Hans Tore</mods:namePart>
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<mods:namePart id="ED0CE4ABBE0EDBC0831D7DA6B35AE1B0">Klautau, Michelle</mods:namePart>
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<treatment id="038E706DEC0F7459FF1728E6C0D9FE73" ID-DOI="http://doi.org/10.5281/zenodo.6153200" ID-GBIF-Taxon="119560639" ID-Zenodo-Dep="6153200" LSID="urn:lsid:plazi:treatment:038E706DEC0F7459FF1728E6C0D9FE73" httpUri="http://treatment.plazi.org/id/038E706DEC0F7459FF1728E6C0D9FE73" lastPageId="28" lastPageNumber="303" pageId="27" pageNumber="302">
<subSubSection id="C33D92F0EC0F745EFF1728E6C6C6FC3A" box="[151,747,931,957]" pageId="27" pageNumber="302" type="nomenclature">
<paragraph id="8B98C17BEC0F745EFF1728E6C6C6FC3A" blockId="27.[151,747,931,957]" box="[151,747,931,957]" pageId="27" pageNumber="302">
<heading id="D0D07617EC0F745EFF1728E6C6C6FC3A" bold="true" box="[151,747,931,957]" fontSize="11" level="1" pageId="27" pageNumber="302" reason="1">
<emphasis id="B9531D69EC0F745EFF1728E6C6C6FC3A" bold="true" box="[151,747,931,957]" pageId="27" pageNumber="302">
<taxonomicName id="4C27BAF8EC0F745EFF1728E6C670FC3A" ID-CoL="84X9G" authority="Hozawa, 1929" authorityName="Hozawa" authorityYear="1929" box="[151,605,931,957]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsba" status="comb. nov.">
<emphasis id="B9531D69EC0F745EFF1728E6C5B8FC3A" bold="true" box="[151,405,931,957]" italics="true" pageId="27" pageNumber="302">Ascoleucetta amitsba</emphasis>
(Hôzawa, 1929)
</taxonomicName>
<taxonomicNameLabel id="A260A012EC0F745EFDE528E6C6C6FC3A" box="[613,747,931,957]" pageId="27" pageNumber="302">comb. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C33D92F0EC0F745EFF1728AEC640FBE9" pageId="27" pageNumber="302" type="diagnosis">
<paragraph id="8B98C17BEC0F745EFF1728AEC54CFBA1" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF1728AEC53CFB85" box="[151,273,1003,1026]" italics="true" pageId="27" pageNumber="302">Diagnosis:</emphasis>
Cortex with conspicuous inhalant apertures. Skeleton composed of three categories of triactines and two of tetractines.
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472F76C640FBE9" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472F76C67BFBCD" box="[199,598,1074,1098]" italics="true" pageId="27" pageNumber="302">
Synonymies:
<taxonomicName id="4C27BAF8EC0F745EFEDE2F77C67BFBCD" authority="Hozawa 1929: 283" authorityName="Hozawa" authorityPageNumber="283" authorityYear="1929" box="[350,598,1074,1098]" class="Calcarea" family="Leucosoleniidae" genus="Leucosolenia" kingdom="Animalia" order="Leucosolenida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsbo">Leucosolenia amitsbo</taxonomicName>
</emphasis>
: Hôzawa 1929: 283; Tanita 1943a: 375; Tanita 1943b: 79; Burton 1963: 216;
<taxonomicName id="4C27BAF8EC0F745EFF4F2F1DC645FBE9" authority="Rapp 2004: 124" authorityName="Rapp" authorityPageNumber="124" authorityYear="2004" box="[207,616,1110,1135]" class="Calcarea" family="Leucascidae" genus="Leucascus" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsbo">
<emphasis id="B9531D69EC0F745EFF4F2F1DC589FBE9" box="[207,420,1110,1135]" italics="true" pageId="27" pageNumber="302">Leucascus amitsbo</emphasis>
: Rapp 2004: 124
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C33D92F0EC0F745EFF472F3EC612FB31" pageId="27" pageNumber="302" type="materials_examined">
<paragraph id="8B98C17BEC0F745EFF472F3EC02BFB15" blockId="27.[151,1436,1002,2034]" box="[199,1030,1146,1170]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472F3EC547FB15" box="[199,362,1146,1170]" italics="true" pageId="27" pageNumber="302">
<typeStatus id="549C7FD9EC0F745EFF472F3EC4D6FB15" box="[199,251,1147,1170]" pageId="27" pageNumber="302">Type</typeStatus>
material:
</emphasis>
Tokyo Science Faculty #17 (
<typeStatus id="549C7FD9EC0F745EFD312F3FC735FB15" box="[689,792,1146,1170]" pageId="27" pageNumber="302" type="holotype">holotype</typeStatus>
; Sagami Sea,
<collectingCountry id="F33081EBEC0F745EFC352F3FC7D7FB15" box="[949,1018,1146,1170]" name="Japan" pageId="27" pageNumber="302">Japan</collectingCountry>
).
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472FE5C612FB31" blockId="27.[151,1436,1002,2034]" box="[199,575,1182,1207]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472FE5C572FB31" box="[199,351,1182,1207]" italics="true" pageId="27" pageNumber="302">
<typeStatus id="549C7FD9EC0F745EFF472FE5C4D6FB30" box="[199,251,1184,1207]" pageId="27" pageNumber="302">Type</typeStatus>
locality:
</emphasis>
Sagami Sea,
<collectingCountry id="F33081EBEC0F745EFE782FDAC616FB31" box="[504,571,1183,1206]" name="Japan" pageId="27" pageNumber="302">Japan</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="C33D92F0EC0F745EFF472F86C0D1F8E5" pageId="27" pageNumber="302" type="description">
<paragraph id="8B98C17BEC0F745EFF472F86C6E4FAED" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472F86C579FB5D" box="[199,340,1219,1242]" italics="true" pageId="27" pageNumber="302">Description:</emphasis>
As mentioned before, the redescription of
<taxonomicName id="4C27BAF8EC0F745EFCC62F87C01AFB5D" box="[838,1079,1218,1242]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC0F745EFCC62F87C01AFB5D" box="[838,1079,1218,1242]" italics="true" pageId="27" pageNumber="302">Ascoleucetta amitsba</emphasis>
</taxonomicName>
could not be made as the
<typeStatus id="549C7FD9EC0F745EFAEC2F86C1B1FB5C" box="[1388,1436,1219,1243]" pageId="27" pageNumber="302">type</typeStatus>
material is lost (R. Ueshima, personal communication). According to the original description (Hôzawa 1929), the cormus is formed by anastomosed choanocyte tubes. The consistency is firm in the outer part and soft in the inner part. The inhalant apertures are regularly distributed on the sponge surface, and measure from 400 to 1000 μm. The osculum is apical and surrounded by a membrane.
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472E33C64BFA7D" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">The skeleton is composed of three categories of triactines and two categories of tetractines. Giant triactines compose the cortical skeleton. Inside, small triactines and tetractines are present forming the choanosomal skeleton. The atrial skeleton is composed of triactines and rare tetractines which were considered different from those in the choanosome (Hôzawa 1929).</paragraph>
<paragraph id="8B98C17BEC0F745EFF472D43C77AF998" blockId="27.[151,1436,1002,2034]" box="[199,855,1542,1567]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472D43C509F999" box="[199,292,1542,1566]" italics="true" pageId="27" pageNumber="302">Spicules</emphasis>
(according to the original description;
<figureCitation id="131CDDFEEC0F745EFD592D43C768F999" box="[729,837,1542,1566]" captionStart="FIGURE 18" captionStartId="28.[151,248,1169,1192]" captionTargetBox="[244,1340,539,1147]" captionTargetId="figure@28.[244,1342,527,1147]" captionTargetPageId="28" captionText="FIGURE 18. Ascoleucetta amitsba. Schematic representation of the spicules (modified from Hôzawa 1929). A, Cortical triactines; B, Triactines of the choanocyte tubes; C, Tetractines of the choanocyte tubes; D, Atrial triactines; E, Atrial tetractines." httpUri="https://zenodo.org/record/221870/files/figure.png" pageId="27" pageNumber="302">Figure 18</figureCitation>
):
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472D6FC708F9E1" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
(
<emphasis id="B9531D69EC0F745EFF502D6EC4F5F9C5" box="[208,216,1579,1602]" italics="true" pageId="27" pageNumber="302">i</emphasis>
) Cortical triactines: Frequently regular. Actines are cylindrical to slightly conical, with sharp tips. Measurements: 220500 μm (length)
<date id="FF99E7BBEC0F745EFDBD2D0AC6B5F9E1" box="[573,664,1614,1638]" pageId="27" pageNumber="302" value="1920-10-30">x 2030</date>
μm (width);
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472D37C5D1F929" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
(
<emphasis id="B9531D69EC0F745EFF502D36C4CDF90D" box="[208,224,1651,1674]" italics="true" pageId="27" pageNumber="302">ii</emphasis>
) Choanosomal triactines: Regular. Actines are straight, cylindrical, with sharp tips. Measurements: 100160 μm (length)
<date id="FF99E7BBEC0F745EFEA22DD2C542F929" box="[290,367,1686,1710]" pageId="27" pageNumber="302" value="2010-10-08">x 810</date>
μm (width);
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472DFFC664F971" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
(
<emphasis id="B9531D69EC0F745EFF502DFEC4CAF955" box="[208,231,1723,1746]" italics="true" pageId="27" pageNumber="302">iii</emphasis>
) Choanosomal tetractines: Similar to the choanosomal triactines. The apical actine is straight and measures 60150 μm (length)
<date id="FF99E7BBEC0F745EFEFD2D9AC591F971" box="[381,444,1758,1782]" pageId="27" pageNumber="302">x 46</date>
μm (width);
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472C47C5EFF8B9" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
(
<emphasis id="B9531D69EC0F745EFF502C46C4C9F89D" box="[208,228,1795,1818]" italics="true" pageId="27" pageNumber="302">iv</emphasis>
) Atrial triactines: Regular. Actines are straight, cylindrical, with sharp tips. Measurements: 140240 μm (length)
<date id="FF99E7BBEC0F745EFF762C62C518F8B9" box="[246,309,1830,1854]" pageId="27" pageNumber="302">x 68</date>
μm (width);
</paragraph>
<paragraph id="8B98C17BEC0F745EFF472C0FC0D1F8E5" blockId="27.[151,1436,1002,2034]" box="[199,1276,1866,1890]" pageId="27" pageNumber="302">
(
<emphasis id="B9531D69EC0F745EFF502C0EC4F1F8E5" box="[208,220,1867,1890]" italics="true" pageId="27" pageNumber="302">v</emphasis>
) Atrial tetractines: Similar to the atrial triactines. There is no information on the apical actine.
</paragraph>
</subSubSection>
<subSubSection id="C33D92F0EC0F7459FF472C2BC67EFE2B" lastPageId="28" lastPageNumber="303" pageId="27" pageNumber="302" type="discussion">
<paragraph id="8B98C17BEC0F745EFF472C2BC0E3F875" blockId="27.[151,1436,1002,2034]" pageId="27" pageNumber="302">
<emphasis id="B9531D69EC0F745EFF472C2BC61AF801" box="[199,567,1902,1926]" italics="true" pageId="27" pageNumber="302">
Remarks:
<taxonomicName id="4C27BAF8EC0F745EFEC12C2BC61AF801" box="[321,567,1902,1926]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsba">Ascoleucetta amitsba</taxonomicName>
</emphasis>
was recently transferred to the genus
<taxonomicName id="4C27BAF8EC0F745EFB972C35C11FF801" authority="Rapp 2004" authorityName="Rapp" authorityYear="2004" box="[1047,1330,1902,1927]" class="Calcarea" family="Leucascidae" genus="Leucascus" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="genus">
<emphasis id="B9531D69EC0F745EFB972C35C0A1F800" box="[1047,1164,1904,1927]" italics="true" pageId="27" pageNumber="302">Leucascus</emphasis>
(Rapp 2004)
</taxonomicName>
. In fact, according to Hôzawa (1929), the cormus is formed by anastomosed choanocyte tubes, and presents both cortex and atrium without choanocytes. Nevertheless, with the revalidation of the genus
<taxonomicName id="4C27BAF8EC0F745EFC752CF3C0A9F849" box="[1013,1156,1974,1998]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="genus">
<emphasis id="B9531D69EC0F745EFC752CF3C0A9F849" box="[1013,1156,1974,1998]" italics="true" pageId="27" pageNumber="302">Ascoleucetta</emphasis>
</taxonomicName>
suggested by the present work, we propose the new combination
<taxonomicName id="4C27BAF8EC0F745EFDD72C9FC6E2F875" box="[599,719,2010,2034]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="27" pageNumber="302" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC0F745EFDD72C9FC6E2F875" box="[599,719,2010,2034]" italics="true" pageId="27" pageNumber="302">A. amitsba</emphasis>
</taxonomicName>
due to the presence of large cortical spicules.
</paragraph>
<paragraph id="8B98C17BEC087459FF472BDDC67EFE2B" blockId="28.[151,1437,151,500]" pageId="28" pageNumber="303">
Hôzawa (1929) mentioned that
<taxonomicName id="4C27BAF8EC087459FDB42BDDC682FF37" box="[564,687,152,176]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC087459FDB42BDDC682FF37" box="[564,687,152,176]" italics="true" pageId="28" pageNumber="303">A. amitsba</emphasis>
</taxonomicName>
was close to
<taxonomicName id="4C27BAF8EC087459FCD12BDDC7CAFF37" box="[849,999,152,176]" class="Calcarea" family="Leucaltidae" genus="Leucettusa" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="ventricosa">
<emphasis id="B9531D69EC087459FCD12BDDC7CAFF37" box="[849,999,152,176]" italics="true" pageId="28" pageNumber="303">A. ventricosa</emphasis>
</taxonomicName>
. He said that the differences between these species were the width of the cortical triactines, and the presence of “trichoxea” (microdiactines) in the latter. After the taxonomic revision of both species we observed that they present very distinct categories of spicules.
<taxonomicName id="4C27BAF8EC087459FF172A41C5A6FE9B" box="[151,395,260,284]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC087459FF172A41C5A6FE9B" box="[151,395,260,284]" italics="true" pageId="28" pageNumber="303">Ascoleucetta amitsba</emphasis>
</taxonomicName>
is composed of three
<typeStatus id="549C7FD9EC087459FD192A40C6F9FE9A" box="[665,724,261,285]" pageId="28" pageNumber="303">types</typeStatus>
of triactines and two of tetractines, while
<taxonomicName id="4C27BAF8EC087459FB522A41C146FE9B" box="[1234,1387,260,284]" class="Calcarea" family="Leucaltidae" genus="Leucettusa" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="ventricosa">
<emphasis id="B9531D69EC087459FB522A41C146FE9B" box="[1234,1387,260,284]" italics="true" pageId="28" pageNumber="303">A. ventricosa</emphasis>
</taxonomicName>
has microdiactines, two
<typeStatus id="549C7FD9EC087459FEFC2A6DC59AFEC7" box="[380,439,296,320]" pageId="28" pageNumber="303">types</typeStatus>
of triactines and one of tetractines. Moreover, the cortical triactines of
<taxonomicName id="4C27BAF8EC087459FB592A6DC17FFEC7" box="[1241,1362,296,320]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC087459FB592A6DC17FFEC7" box="[1241,1362,296,320]" italics="true" pageId="28" pageNumber="303">A. amitsba</emphasis>
</taxonomicName>
varies from 220 to 500 μm, and in
<taxonomicName id="4C27BAF8EC087459FE522A09C64BFEE3" box="[466,614,332,356]" class="Calcarea" family="Leucaltidae" genus="Leucettusa" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="ventricosa">
<emphasis id="B9531D69EC087459FE522A09C64BFEE3" box="[466,614,332,356]" italics="true" pageId="28" pageNumber="303">A. ventricosa</emphasis>
</taxonomicName>
it varies from 136.5 to 388.5 μm. The width of the choanosomal spicules also varies: 15.6 to 23.4 μm (triactines) and 15.5 to 20.8 µm (tetractines) in
<taxonomicName id="4C27BAF8EC087459FC662A35C054FE0F" box="[998,1145,368,392]" class="Calcarea" family="Leucaltidae" genus="Leucettusa" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="ventricosa">
<emphasis id="B9531D69EC087459FC662A35C054FE0F" box="[998,1145,368,392]" italics="true" pageId="28" pageNumber="303">A. ventricosa</emphasis>
</taxonomicName>
, and 8.0 to 10.0 μm (both triactines and tetractines) in
<taxonomicName id="4C27BAF8EC087459FE542AD1C661FE2B" box="[468,588,404,428]" class="Calcarea" family="Leucascidae" genus="Ascoleucetta" kingdom="Animalia" order="Clathrinida" pageId="28" pageNumber="303" phylum="Porifera" rank="species" species="amitsba">
<emphasis id="B9531D69EC087459FE542AD1C661FE2B" box="[468,588,404,428]" italics="true" pageId="28" pageNumber="303">A. amitsba</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C33D92F0EC087459FF472AFDC0D9FE73" pageId="28" pageNumber="303" type="distribution">
<paragraph id="8B98C17BEC087459FF472AFDC0D9FE73" blockId="28.[151,1437,151,500]" pageId="28" pageNumber="303">
<emphasis id="B9531D69EC087459FF472AFDC574FE57" box="[199,345,440,464]" italics="true" pageId="28" pageNumber="303">Distribution:</emphasis>
North-West Pacific Ocean: Sagami Sea (Hôzawa 1929), and Kosikijima, Kagosima Prefecture (Tanita 1943a)—
<collectingCountry id="F33081EBEC087459FED62A99C5B4FE73" box="[342,409,476,500]" name="Japan" pageId="28" pageNumber="303">Japan</collectingCountry>
. Spalding
<emphasis id="B9531D69EC087459FD8F2A98C66DFE73" box="[527,576,476,500]" italics="true" pageId="28" pageNumber="303">et al</emphasis>
. (2007) corresponding ecoregions: Central Kuroshio Current.
</paragraph>
</subSubSection>
</treatment>
</document>