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<mods:title id="9251D79441FF5B02CA8F568810712D98">Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata</mods:title>
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<mods:namePart id="EFE0D397F4D87E16B6ED4D3086A6A1E0">Wood, Timothy S.</mods:namePart>
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<paragraph id="FE3A3690FFFDFFA92390FE6AA6A65AEE" blockId="20.[151,401,391,454]" box="[151,401,391,418]" pageId="20" pageNumber="421">
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<emphasis id="CCF1EA82FFFDFFA92390FE6AA6A65AEE" bold="true" box="[151,401,391,418]" pageId="20" pageNumber="421">
<taxonomicName id="39854D13FFFDFFA92390FE6AA67C5AEE" authority="Wood, 2022" authorityName="Wood" authorityYear="2022" box="[151,331,391,418]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="20" pageNumber="421" phylum="Bryozoa" rank="species" species="raoi" status="sp. nov.">
<emphasis id="CCF1EA82FFFDFFA92390FE6AA67C5AEE" bold="true" box="[151,331,391,418]" italics="true" pageId="20" pageNumber="421">Plumatella raoi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D7C257F9FFFDFFA92255FE65A6A65AEE" box="[338,401,392,418]" pageId="20" pageNumber="421" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFDFFA92390FE41A7CE5A8A" box="[151,249,428,454]" pageId="20" pageNumber="421" type="description">
<paragraph id="FE3A3690FFFDFFA92390FE41A7CE5A8A" blockId="20.[151,401,391,454]" box="[151,249,428,454]" pageId="20" pageNumber="421">
(
<figureCitation id="66BE2A15FFFDFFA92398FE41A7C65A8A" box="[159,241,428,454]" captionStart="FIGURE 17" captionStartId="20.[151,250,1864,1888]" captionTargetBox="[190,1398,658,1794]" captionTargetId="figure-145@20.[189,1398,658,1840]" captionTargetPageId="20" captionText="FIGURE 17. Plumatella raoi n. sp. (a) Two sessoblasts showing unusual cellular annulus and heavily tuberculated frontal valve, scale bar = 100 μm; (b) Closer view of sessoblast annulus, scale bar = 10 μm; (c) SEM images of floatoblast valves with dorsal valve on the left, scale bar = 100 µm; (d) Enlargement of a portion of previous image showing hypertubercles and porelike structures; (e) Floatoblast valves with dorsal valve on the left, scale bar = 100 μm; (f) sessoblast valves with frontal valve on the left, scale bar = 100 μm." figureDoi="http://doi.org/10.5281/zenodo.7270931" httpUri="https://zenodo.org/record/7270931/files/figure.png" pageId="20" pageNumber="421">Fig. 17</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFDFFA92390FE19A52E591A" pageId="20" pageNumber="421" type="materials_examined">
<paragraph id="FE3A3690FFFDFFA92390FE19A52E591A" blockId="20.[151,1436,500,634]" pageId="20" pageNumber="421">
<materialsCitation id="4EED3CCDFFFDFFA92390FE19A52E591A" ID-GBIF-Occurrence="3960832322" collectingDate="1958-12-25" collectionCode="ZSI" collectorName="No. P" country="India" elevation="549" location="Shillong" pageId="20" pageNumber="421" specimenCount="1" stateProvince="Assam" typeStatus="holotype">
<emphasis id="CCF1EA82FFFDFFA92390FE19A6725942" bold="true" box="[151,325,500,526]" pageId="20" pageNumber="421">
<typeStatus id="213E8832FFFDFFA92390FE19A7E55942" box="[151,210,500,526]" pageId="20" pageNumber="421">Type</typeStatus>
material.
</emphasis>
<collectorName id="53705346FFFDFFA9224BFE18A6BA5942" box="[332,397,500,527]" pageId="20" pageNumber="421">No. P</collectorName>
1387 collected
<date id="8A3B1050FFFDFFA92130FE19A43A5943" box="[567,781,500,527]" pageId="20" pageNumber="421" value="1958-12-25">
<collectingDate id="9A7FE9B8FFFDFFA92130FE19A43A5943" box="[567,781,500,527]" pageId="20" pageNumber="421" value="1958-12-25">25 December 1958</collectingDate>
</date>
at “Jor Pokhri,
<quantity id="397D9B75FFFDFFA920B9FE19A31D5942" box="[958,1066,500,526]" metricMagnitude="2" metricUnit="m" metricValue="5.4864" pageId="20" pageNumber="421" unit="ft" value="1800.0">
<elevation id="75A8D1A3FFFDFFA920B9FE19A31D5942" box="[958,1066,500,526]" metricMagnitude="2" metricUnit="m" metricValue="5.4864" pageId="20" pageNumber="421" unit="ft" value="1800.0">1800 feet</elevation>
</quantity>
, Sitong, Darjeeling District, East Himalayas Shilong,
<collectingRegion id="3C41F872FFFDFFA92286FDF5A6E5597E" box="[385,466,536,562]" country="India" name="Assam" pageId="20" pageNumber="421">Assam</collectingRegion>
,” now
<location id="FB5A604BFFFDFFA92121FDF5A5BF597E" LSID="urn:lsid:plazi:treatment:762C8786FFFDFFA82390FE6AA6A25F79:FB5A604BFFFDFFA92121FDF5A5BF597E" box="[550,648,536,562]" country="India" name="Shillong" pageId="20" pageNumber="421" stateProvince="Assam">Shillong</location>
, capital of
<collectingRegion id="3C41F872FFFDFFA92009FDF5A4FA597E" box="[782,973,536,562]" country="India" name="Meghalaya" pageId="20" pageNumber="421">Meghalaya State</collectingRegion>
in northeast
<collectingCountry id="86927600FFFDFFA9276EFDF5A392597E" box="[1129,1189,536,562]" name="India" pageId="20" pageNumber="421">India</collectingCountry>
, by “
<collectionCode id="9894AE55FFFDFFA927E1FDF5A222597E" box="[1254,1301,536,562]" pageId="20" pageNumber="421">ZSI</collectionCode>
”, originally labelled “
<taxonomicName id="39854D13FFFDFFA92204FDD1A532591A" authorityName="Allman" authorityYear="1844" box="[259,517,572,598]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="20" pageNumber="421" phylum="Bryozoa" rank="species" species="emarginata">
<emphasis id="CCF1EA82FFFDFFA92204FDD1A532591A" box="[259,517,572,598]" italics="true" pageId="20" pageNumber="421">Plumatella emarginata</emphasis>
</taxonomicName>
.”
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFDFFA923C0FD8DA4755936" box="[199,834,608,634]" pageId="20" pageNumber="421" type="diagnosis">
<paragraph id="FE3A3690FFFDFFA923C0FD8DA4755936" blockId="20.[151,1436,500,634]" box="[199,834,608,634]" pageId="20" pageNumber="421">
<emphasis id="CCF1EA82FFFDFFA923C0FD8DA6755936" bold="true" box="[199,322,608,634]" pageId="20" pageNumber="421">Diagnosis.</emphasis>
Sessoblast with cellular annulus (uninflated).
</paragraph>
</subSubSection>
<caption id="AAFA6618FFFDFFA92390F8A5A6E35CBC" ID-DOI="http://doi.org/10.5281/zenodo.7270931" ID-Zenodo-Dep="7270931" httpUri="https://zenodo.org/record/7270931/files/figure.png" pageId="20" pageNumber="421" startId="20.[151,250,1864,1888]" targetBox="[190,1398,658,1794]" targetPageId="20">
<paragraph id="FE3A3690FFFDFFA92390F8A5A6E35CBC" blockId="20.[151,1437,1864,2032]" pageId="20" pageNumber="421">
<emphasis id="CCF1EA82FFFDFFA92390F8A5A6155C2C" bold="true" box="[151,290,1864,1888]" pageId="20" pageNumber="421">FIGURE 17.</emphasis>
<taxonomicName id="39854D13FFFDFFA9222CF8A5A6F95C2C" authority="Wood, 2022" authorityName="Wood" authorityYear="2022" box="[299,462,1864,1888]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="20" pageNumber="421" phylum="Bryozoa" rank="species" species="raoi" status="sp. nov.">
<emphasis id="CCF1EA82FFFDFFA9222CF8A5A6F95C2C" box="[299,462,1864,1888]" italics="true" pageId="20" pageNumber="421">Plumatella raoi</emphasis>
</taxonomicName>
<emphasis id="CCF1EA82FFFDFFA922D0F8A5A5245C2C" bold="true" box="[471,531,1864,1888]" pageId="20" pageNumber="421">
<taxonomicNameLabel id="D7C257F9FFFDFFA922D0F8A5A5245C2C" box="[471,531,1864,1888]" pageId="20" pageNumber="421" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(a) Two sessoblasts showing unusual cellular annulus and heavily tuberculated frontal valve, scale bar = 100 μm; (b) Closer view of sessoblast annulus, scale bar = 10 μm; (c) SEM images of floatoblast valves with dorsal valve on the left, scale bar = 100 µm; (d) Enlargement of a portion of previous image showing hypertubercles and porelike structures; (e) Floatoblast valves with dorsal valve on the left, scale bar = 100 μm; (f) sessoblast valves with frontal valve on the left, scale bar = 100 μm.
</paragraph>
</caption>
<subSubSection id="B69F651BFFFCFFA823C0FF7AA3A75BB5" pageId="21" pageNumber="422" type="etymology">
<paragraph id="FE3A3690FFFCFFA823C0FF7AA3A75BB5" blockId="21.[151,1437,151,1077]" pageId="21" pageNumber="422">
<emphasis id="CCF1EA82FFFCFFA823C0FF7AA6795BFD" bold="true" box="[199,334,151,177]" pageId="21" pageNumber="422">Etymology.</emphasis>
The specific epithet honors the late K.S. Rao (19382012), an active freshwater biologist based for many years at Vikram University in
<collectingRegion id="3C41F872FFFCFFA82152FF56A5D35B99" box="[597,740,187,213]" country="India" name="Maharashtra" pageId="21" pageNumber="422">Maharashtra</collectingRegion>
, whose numerous publications on the freshwater bryozoans of
<collectingCountry id="86927600FFFCFFA82390FF32A7E65BB5" box="[151,209,223,249]" name="India" pageId="21" pageNumber="422">India</collectingCountry>
(19611985) made significant contributions towards the understanding of this group.
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFCFFA823C0FEEFA5EC5955" pageId="21" pageNumber="422" type="description">
<paragraph id="FE3A3690FFFCFFA823C0FEEFA5EC5955" blockId="21.[151,1437,151,1077]" pageId="21" pageNumber="422">
<emphasis id="CCF1EA82FFFCFFA823C0FEEFA66E5A50" bold="true" box="[199,345,258,284]" pageId="21" pageNumber="422">Description.</emphasis>
Colony spreading and diffuse with many free branches; ectocyst thin, colorless and transparent. Floatoblasts short and broad, only about 350 μm in length with a length/width ratio &lt;1.5 (
<tableCitation id="B307032BFFFCFFA827A6FECAA3C05A0D" box="[1185,1271,295,321]" captionStart="TABLE 1" captionStartId="21.[151,239,1119,1143]" captionTargetBox="[166,1393,1231,1738]" captionTargetPageId="21" captionText="TABLE 1. Floatoblast dimensions for selected species, including overall length and width, dorsal fenestra length (dfenL), dorsal fenestra width (dfenW), ventral fenestra length (vfenL), ventral fenestra width (vfenW), and number of statoblasts measured (n). Average measurements are shown in micrometers with standard deviation in parentheses. Species name ZSI No. Length Width dfenL dfenW vfenL vfenW n" httpUri="http://table.plazi.org/id/AAFA6618FFFCFFA82390FBB2A3DE5FF3" pageId="21" pageNumber="422" tableUuid="AAFA6618FFFCFFA82390FBB2A3DE5FF3">Table 1</tableCitation>
); dorsal valve flat or even slightly concave; dorsal fenestra small with the width often greater than the length, and the length less than half floatoblast length; floatoblast ventral valve highly convex with the fenestra only slightly smaller than the underlying capsule; fenestrae of both valves bearing a dense arrangement of tubercles with hypertubercles, many surrounded by 5 or 6 pore-like depressions. Sessoblast annulus cellular, with the cells open externally (
<figureCitation id="66BE2A15FFFCFFA8261BFE5AA79F5AB9" captionStart="FIGURE 17" captionStartId="20.[151,250,1864,1888]" captionTargetBox="[190,1398,658,1794]" captionTargetId="figure-145@20.[189,1398,658,1840]" captionTargetPageId="20" captionText="FIGURE 17. Plumatella raoi n. sp. (a) Two sessoblasts showing unusual cellular annulus and heavily tuberculated frontal valve, scale bar = 100 μm; (b) Closer view of sessoblast annulus, scale bar = 10 μm; (c) SEM images of floatoblast valves with dorsal valve on the left, scale bar = 100 µm; (d) Enlargement of a portion of previous image showing hypertubercles and porelike structures; (e) Floatoblast valves with dorsal valve on the left, scale bar = 100 μm; (f) sessoblast valves with frontal valve on the left, scale bar = 100 μm." figureDoi="http://doi.org/10.5281/zenodo.7270931" httpUri="https://zenodo.org/record/7270931/files/figure.png" pageId="21" pageNumber="422">Fig. 17a, b, d</figureCitation>
); frontal valve crowded with tubercles; basal valve having sharply reduced adhesive material by which plumatellid sessoblasts are normally attached to the substratum.
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFCFFA823C0FDCFA4B05971" box="[199,903,546,573]" pageId="21" pageNumber="422" type="distribution">
<paragraph id="FE3A3690FFFCFFA823C0FDCFA4B05971" blockId="21.[151,1437,151,1077]" box="[199,903,546,573]" pageId="21" pageNumber="422">
<emphasis id="CCF1EA82FFFCFFA823C0FDCFA6565970" bold="true" box="[199,353,546,572]" pageId="21" pageNumber="422">Distribution.</emphasis>
The species is known only from its
<typeStatus id="213E8832FFFCFFA821F1FDCEA4115971" box="[758,806,547,573]" pageId="21" pageNumber="422">type</typeStatus>
locality.
</paragraph>
</subSubSection>
<subSubSection id="B69F651BFFFCFFA823C0FDAAA6A25F79" pageId="21" pageNumber="422" type="discussion">
<paragraph id="FE3A3690FFFCFFA823C0FDAAA4FF5811" blockId="21.[151,1437,151,1077]" pageId="21" pageNumber="422">
<emphasis id="CCF1EA82FFFCFFA823C0FDAAA60C592D" bold="true" box="[199,315,583,609]" pageId="21" pageNumber="422">Remarks.</emphasis>
It is generally understood that among plumatellid bryozoans the sessoblast annulus is homologous to the gas-filled annulus of floatoblasts (
<bibRefCitation id="9A144B61FFFCFFA82130FD86A5F359C9" author="Mukai, H." box="[567,708,619,645]" pageId="21" pageNumber="422" pagination="535 - 576" refId="ref21427" refString="Mukai, H. (1982) Development of freshwater bryozoans (Phylactolaemata). In: Harrison, F. W. &amp; Cowden, R. R. (Eds.), Developmental Biology of Freshwater Invertebrates. Liss, New York, New York, pp. 535 - 576" type="book chapter" year="1982">Mukai 1982</bibRefCitation>
). The sessoblast annulus typically occurs as a blade-like ribbon of chitin extending around the periphery of the frontal valve. The annulus can be variable in width and ornamentation, but the underlying structure appears always to be the same. However, this species is unique by the cellular nature of the sessoblast annulus, even including communicating pores, which normally occur only in floatoblasts (
<bibRefCitation id="9A144B61FFFCFFA82649FD3AA6265859" author="Rubini, A. &amp; Pieroni, G. &amp; Elia, A. C. &amp; Zippilli, L. &amp; Paolocci, F. &amp; Taticchi, M. I." pageId="21" pageNumber="422" pagination="81 - 93" refId="ref22397" refString="Rubini, A., Pieroni, G., Elia, A. C., Zippilli, L., Paolocci, F. &amp; Taticchi, M. I. (2011) Novel morphological and genetic tools to discriminate species among the family Plumatellidae (Phylactolaemata, Bryozoa). Hydrobiologia, 664, 81 - 93. https: // doi. org / 10.1007 / s 10750 - 010 - 0584 - 1" type="journal article" year="2011">
Rubini
<emphasis id="CCF1EA82FFFCFFA82390FD16A7FF5859" box="[151,200,763,789]" italics="true" pageId="21" pageNumber="422">et al</emphasis>
. 2011
</bibRefCitation>
).
<bibRefCitation id="9A144B61FFFCFFA82224FD16A6F25859" author="Lacourt, A. W." box="[291,453,763,789]" pageId="21" pageNumber="422" pagination="1 - 159" refId="ref20863" refString="Lacourt, A. W. (1968) A monograph of the freshwater Bryozoa - Phylactolaemata. Zoologische Verhandelingen, 68, 1 - 159." type="journal article" year="1968">Lacourt (1968</bibRefCitation>
, pl. 12i) illustrated a sessoblast of
<taxonomicName id="39854D13FFFCFFA82042FD16A4E75858" authorityName="Toriumi" authorityYear="1952" box="[837,976,763,788]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="21" pageNumber="422" phylum="Bryozoa" rank="species" species="vorstmani">
<emphasis id="CCF1EA82FFFCFFA82042FD16A4E75858" box="[837,976,763,788]" italics="true" pageId="21" pageNumber="422">P. vorstmani</emphasis>
</taxonomicName>
(now
<taxonomicName id="39854D13FFFCFFA82710FD16A21C5858" baseAuthorityName="Toriumi" baseAuthorityYear="1952" box="[1047,1323,763,789]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="21" pageNumber="422" phylum="Bryozoa" rank="species" species="vorstmani">
<emphasis id="CCF1EA82FFFCFFA82710FD16A21C5858" box="[1047,1323,763,789]" italics="true" pageId="21" pageNumber="422">Rumarcanella vorstmani</emphasis>
</taxonomicName>
) in which a small portion of the annulus showed cellular structure, but this appears to have been an isolated developmental anomaly. In the ZSI specimen every sessoblast carries a cellular annulus.
</paragraph>
<paragraph id="FE3A3690FFFCFFA823C0FC8AA6E058A1" blockId="21.[151,1437,151,1077]" pageId="21" pageNumber="422">
The small floatoblast size is another distinguishing feature of
<taxonomicName id="39854D13FFFCFFA8208DFC8AA4E158CC" authority="Wood, 2022" authorityName="Wood" authorityYear="2022" box="[906,982,871,896]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="21" pageNumber="422" phylum="Bryozoa" rank="species" species="raoi" status="sp. nov.">
<emphasis id="CCF1EA82FFFCFFA8208DFC8AA4E158CC" box="[906,982,871,896]" italics="true" pageId="21" pageNumber="422">P. raoi</emphasis>
</taxonomicName>
<emphasis id="CCF1EA82FFFCFFA820D9FC8AA32858CD" bold="true" box="[990,1055,871,897]" pageId="21" pageNumber="422">
<taxonomicNameLabel id="D7C257F9FFFCFFA820D9FC8AA32858CD" box="[990,1055,871,897]" pageId="21" pageNumber="422" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
The length and width are similar to floatoblasts of
<taxonomicName id="39854D13FFFCFFA8225CFC66A5B358E9" baseAuthorityName="Annandale" baseAuthorityYear="1911" box="[347,644,907,933]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="21" pageNumber="422" phylum="Bryozoa" rank="species" species="himalayana">
<emphasis id="CCF1EA82FFFCFFA8225CFC66A5B358E9" box="[347,644,907,933]" italics="true" pageId="21" pageNumber="422">Rumarcanella himalayana</emphasis>
</taxonomicName>
, but in
<taxonomicName id="39854D13FFFCFFA821DDFC66A41358E8" authority="Wood, 2022" authorityName="Wood" authorityYear="2022" box="[730,804,907,932]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="21" pageNumber="422" phylum="Bryozoa" rank="species" species="raoi" status="sp. nov.">
<emphasis id="CCF1EA82FFFCFFA821DDFC66A41358E8" box="[730,804,907,932]" italics="true" pageId="21" pageNumber="422">P. raoi</emphasis>
</taxonomicName>
<emphasis id="CCF1EA82FFFCFFA8202CFC66A45D58E9" bold="true" box="[811,874,907,933]" pageId="21" pageNumber="422">
<taxonomicNameLabel id="D7C257F9FFFCFFA8202CFC66A45D58E9" box="[811,874,907,933]" pageId="21" pageNumber="422" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
the dorsal fenestra is much smaller and the dorsal valve is flat or even slightly concave, not convex. Hypertubercles appear mostly on the ventral valve and are not expressed on every tubercle.
</paragraph>
<paragraph id="FE3A3690FFFCFFA823C0FC1AA6A25F79" blockId="21.[151,1437,151,1077]" pageId="21" pageNumber="422">The specimen consists of small bits tree bark and a few loose strings of zooids with about ten sessoblasts and numerous floatoblasts.</paragraph>
</subSubSection>
</treatment>
</document>