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<document id="D33F79A47AA3B00EE0440A6C620B2B72" ID-CLB-Dataset="27715" ID-DOI="10.11646/zootaxa.4541.1.1" ID-GBIF-Dataset="9c3fecf1-4e11-4c79-a908-e0a5abbaf3ca" ID-ISSN="1175-5326" ID-Zenodo-Dep="2617460" ID-ZooBank="B11E734C-218B-418C-84E6-719AB3C58AFF" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1553927824231" checkinUser="plazi" docAuthor="Arachchige, Gayashan M., Jayakody, Sevvandi, Mooi, Rich &amp; Kroh, Andreas" docDate="2019" docId="038087B4FFBD896CFF02FF2372F89A1C" docLanguage="en" docName="zootaxa.4541.1.1.pdf" docOrigin="Zootaxa 4541 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Echinolampas ovata" docType="treatment" docVersion="8" lastPageNumber="26" masterDocId="FFB9FFCCFFAA8975FF95FFB47314996C" masterDocTitle="Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka" masterLastPageNumber="100" masterPageNumber="1" pageNumber="24" updateTime="1698715306146" updateUser="ExternalLinkService">
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<mods:title id="33A5D36376378F87239F9FC6B9CA772A">Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka</mods:title>
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<mods:namePart id="4D7F166835388FE63E1FA6A59ED21098">Arachchige, Gayashan M.</mods:namePart>
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<mods:namePart id="2AF2C3848523850187AADC9390C2B547">Jayakody, Sevvandi</mods:namePart>
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<mods:namePart id="6E118DE9A9124807A9A5DFC70DE20674">Mooi, Rich</mods:namePart>
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<treatment id="038087B4FFBD896CFF02FF2372F89A1C" ID-DOI="http://doi.org/10.5281/zenodo.5935430" ID-GBIF-Taxon="154529634" ID-Zenodo-Dep="5935430" LSID="urn:lsid:plazi:treatment:038087B4FFBD896CFF02FF2372F89A1C" httpUri="http://treatment.plazi.org/id/038087B4FFBD896CFF02FF2372F89A1C" lastPageId="25" lastPageNumber="26" pageId="23" pageNumber="24">
<subSubSection id="C3336529FFBD8962FF02FF23712E99DE" box="[151,570,151,178]" pageId="23" pageNumber="24" type="nomenclature">
<paragraph id="8B9636A2FFBD8962FF02FF23712E99DE" blockId="23.[151,570,151,211]" box="[151,570,151,178]" pageId="23" pageNumber="24">
<heading id="D0DE81CEFFBD8962FF02FF23712E99DE" bold="true" box="[151,570,151,178]" fontSize="11" level="1" pageId="23" pageNumber="24" reason="1">
<taxonomicName id="4C294D21FFBD8962FF02FF23712E99DE" authority="(Leske, 1778)" baseAuthorityName="Leske" baseAuthorityYear="1778" box="[151,570,151,178]" class="Echinoidea" family="Echinolampadidae" genus="Echinolampas" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cassiduloida" pageId="23" pageNumber="24" phylum="Echinodermata" rank="species" species="ovata">
<emphasis id="B95DEAB0FFBD8962FF02FF23712E99DE" bold="true" box="[151,570,151,178]" pageId="23" pageNumber="24">
<emphasis id="B95DEAB0FFBD8962FF02FF23729999DD" bold="true" box="[151,397,151,177]" italics="true" pageId="23" pageNumber="24">Echinolampas ovata</emphasis>
(Leske, 1778)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C3336529FFBD8962FF02FF0E70A4985B" pageId="23" pageNumber="24" type="description">
<paragraph id="8B9636A2FFBD8962FF02FF0E72C799BF" blockId="23.[151,570,151,211]" box="[151,467,186,211]" pageId="23" pageNumber="24">
<figureCitation id="13122A27FFBD8962FF02FF0E725199BE" box="[151,325,186,211]" captionStart="FIGURE 14" captionStartId="20.[151,250,1676,1698]" captionTargetBox="[154,1439,284,1569]" captionTargetId="figure@20.[154,1439,284,1569]" captionTargetPageId="20" captionText="FIGURE 14. Comparison of pore-pairs (A and B) and peristome (C and D) between Echinolampas alexandri (A and C, WUSL/EI/1) and Echinolampas ovata (B and D, WUSL/EI/3)." httpUri="https://zenodo.org/record/2617486/files/figure.png" pageId="23" pageNumber="24">Figures 14B, D</figureCitation>
,
<figureCitation id="13122A27FFBD8962FEC4FF0E729699BF" box="[337,386,186,211]" captionStart="FIGURE 15" captionStartId="21.[151,250,1582,1604]" captionTargetBox="[154,1439,763,1486]" captionTargetId="figure@21.[154,1439,763,1486]" captionTargetPageId="21" captionText="FIGURE 15. Comparison of interambulacrum 5 between Echinolampas alexandri (A, WUSL/EI/1) and Echinolampas ovata (B, WUSL/EI/3)." httpUri="https://zenodo.org/record/2617488/files/figure.png" pageId="23" pageNumber="24">15B</figureCitation>
,
<figureCitation id="13122A27FFBD8962FE1BFF0F72B899BF" box="[398,428,187,211]" captionStart="FIGURE 17" captionStartId="23.[151,250,1861,1883]" captionTargetBox="[151,1436,653,1831]" captionTargetId="figure@23.[151,1436,653,1831]" captionTargetPageId="23" captionText="FIGURE 17. Echinolampas ovata (WUSL/EI/3): A, aboral view; B, oral view; C, lateral view." httpUri="https://zenodo.org/record/2617493/files/figure.png" pageId="23" pageNumber="24">17</figureCitation>
,
<figureCitation id="13122A27FFBD8962FE22FF0F72C799BF" box="[439,467,187,211]" captionStart="FIGURE 18" captionStartId="24.[151,250,1877,1899]" captionTargetBox="[182,1426,219,1840]" captionTargetId="figure@24.[151,1436,193,1856]" captionTargetPageId="24" captionText="FIGURE 18. Distribution map of Echinolampas ovata recorded in this study." httpUri="https://zenodo.org/record/2617495/files/figure.png" pageId="23" pageNumber="24">18</figureCitation>
</paragraph>
<paragraph id="8B9636A2FFBD8962FF02FEB671B39874" blockId="23.[151,944,258,311]" box="[151,679,258,280]" pageId="23" pageNumber="24">
1778
<taxonomicName id="4C294D21FFBD8962FF45FEB672CA9874" authority="Leske" authorityName="Leske" box="[208,478,258,280]" class="Echinoidea" family="Clypeasteridae" genus="Echinanthus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Clypeasteroida" pageId="23" pageNumber="24" phylum="Echinodermata" rank="species" species="ouatus">
<emphasis id="B95DEAB0FFBD8962FF45FEB6728C9874" box="[208,408,258,280]" italics="true" pageId="23" pageNumber="24">Echinanthus ouatus</emphasis>
Leske
</taxonomicName>
: p. 127; pl. 20: c, d.
</paragraph>
<paragraph id="8B9636A2FFBD8962FF02FE9570A4985B" blockId="23.[151,944,258,311]" box="[151,944,289,311]" pageId="23" pageNumber="24">
1948a
<taxonomicName id="4C294D21FFBD8962FF4EFE9572EA985B" authority="(Leske)" authorityName="Leske" baseAuthorityName="Leske" baseAuthorityYear="1778" box="[219,510,289,311]" class="Echinoidea" family="Echinolampadidae" genus="Echinolampas" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cassiduloida" pageId="23" pageNumber="24" phylum="Echinodermata" rank="species" species="ovata">
<emphasis id="B95DEAB0FFBD8962FF4EFE9572BE985B" box="[219,426,289,311]" italics="true" pageId="23" pageNumber="24">Echinolampas ovata</emphasis>
(Leske)
</taxonomicName>
.—Mortensen: p. 275281; pl. 4: figs. 18.
</paragraph>
</subSubSection>
<subSubSection id="C3336529FFBD8962FF02FED0706C98CC" pageId="23" pageNumber="24" type="materials_examined">
<paragraph id="8B9636A2FFBD8962FF02FED0706C98CC" blockId="23.[151,1436,356,594]" pageId="23" pageNumber="24">
<emphasis id="B95DEAB0FFBD8962FF02FED072739811" bold="true" box="[151,359,356,381]" pageId="23" pageNumber="24">Material studied.</emphasis>
Five denuded tests: WUSL/EI/3, EI/112, and EI/114, from Negombo 1, WUSL/EI/113, from Baththalangunduwa 1, WUSL/EI/4, from Silavathurai,
<collectingCountry id="F33E7632FFBD8962FC97FE33706798CC" box="[770,883,391,416]" name="Sri Lanka" pageId="23" pageNumber="24">Sri Lanka</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="C3336529FFBD896CFF52FE1872D49A69" lastPageId="25" lastPageNumber="26" pageId="23" pageNumber="24" type="description">
<paragraph id="8B9636A2FFBD8962FF52FE1873E79B61" blockId="23.[151,1436,356,594]" pageId="23" pageNumber="24">
<emphasis id="B95DEAB0FFBD8962FF52FE18724D98A9" bold="true" box="[199,345,428,453]" pageId="23" pageNumber="24">Description.</emphasis>
<emphasis id="B95DEAB0FFBD8962FEF5FE19711D98A9" box="[352,521,428,453]" italics="true" pageId="23" pageNumber="24">Size and shape</emphasis>
—Test moderately large, 44.757.0 mm TL; elongated outline, TW 8592% TL; strongly inflated, TH 6071% TL, with widest point coinciding with tip of posterior petals; posterior margin pointed.
</paragraph>
<paragraph id="8B9636A2FFBD8962FF52FDA373F79B3D" blockId="23.[151,1436,356,594]" pageId="23" pageNumber="24">
<emphasis id="B95DEAB0FFBD8962FF52FDA372769B5C" box="[199,354,535,560]" italics="true" pageId="23" pageNumber="24">Apical system</emphasis>
—Monobasal, with four gonopores; situated anterior of centre, 2934% TL from anterior margin of test.
</paragraph>
<caption id="DF56662AFFBD8962FF02F8F1774E9E37" box="[151,1114,1861,1884]" httpUri="https://zenodo.org/record/2617493/files/figure.png" pageId="23" pageNumber="24" startId="23.[151,250,1861,1883]" targetBox="[151,1436,653,1831]" targetPageId="23">
<paragraph id="8B9636A2FFBD8962FF02F8F1774E9E37" blockId="23.[151,1114,1861,1884]" box="[151,1114,1861,1884]" pageId="23" pageNumber="24">
<emphasis id="B95DEAB0FFBD8962FF02F8F1720B9E37" bold="true" box="[151,287,1861,1883]" pageId="23" pageNumber="24">FIGURE 17.</emphasis>
<taxonomicName id="4C294D21FFBD8962FEB0F8F172E19E30" baseAuthorityName="Leske" baseAuthorityYear="1778" box="[293,501,1861,1884]" class="Echinoidea" family="Echinolampadidae" genus="Echinolampas" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cassiduloida" pageId="23" pageNumber="24" phylum="Echinodermata" rank="species" species="ovata">
<emphasis id="B95DEAB0FFBD8962FEB0F8F172E19E30" box="[293,501,1861,1884]" italics="true" pageId="23" pageNumber="24">Echinolampas ovata</emphasis>
</taxonomicName>
(WUSL/EI/3): A, aboral view; B, oral view; C, lateral view.
</paragraph>
</caption>
<caption id="DF56662AFFB2896DFF02F8E170BE9E07" box="[151,938,1877,1899]" httpUri="https://zenodo.org/record/2617495/files/figure.png" pageId="24" pageNumber="25" startId="24.[151,250,1877,1899]" targetBox="[182,1426,219,1840]" targetPageId="24">
<paragraph id="8B9636A2FFB2896DFF02F8E170BE9E07" blockId="24.[151,938,1877,1899]" box="[151,938,1877,1899]" pageId="24" pageNumber="25">
<emphasis id="B95DEAB0FFB2896DFF02F8E1720B9E06" bold="true" box="[151,287,1877,1899]" pageId="24" pageNumber="25">FIGURE 18.</emphasis>
Distribution map of
<taxonomicName id="4C294D21FFB2896DFE61F8E171D09E07" baseAuthorityName="Leske" baseAuthorityYear="1778" box="[500,708,1877,1899]" class="Echinoidea" family="Echinolampadidae" genus="Echinolampas" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cassiduloida" pageId="24" pageNumber="25" phylum="Echinodermata" rank="species" species="ovata">
<emphasis id="B95DEAB0FFB2896DFE61F8E171D09E07" box="[500,708,1877,1899]" italics="true" pageId="24" pageNumber="25">Echinolampas ovata</emphasis>
</taxonomicName>
recorded in this study.
</paragraph>
</caption>
<paragraph id="8B9636A2FFB2896CFF52F82C7050983B" blockId="24.[151,1436,1944,2035]" lastBlockId="25.[151,1437,151,880]" lastPageId="25" lastPageNumber="26" pageId="24" pageNumber="25">
<emphasis id="B95DEAB0FFB2896DFF52F82C72579EDD" box="[199,323,1944,1969]" italics="true" pageId="24" pageNumber="25">Ambulacra</emphasis>
—Petals with unequal poriferous zones, anterior poriferous zones usually four pore pairs longer than posterior ones in posterior paired petals; length difference in anterior paired petals often not as pronounced and showing more variation (in the studied specimens, posterior poriferous zones between 3 to 6 pore pairs longer than anterior ones); poriferous zone IIIa 2 to 3 pore pairs longer than zone IIIb; outer and inner pores of pore pairs equal in size and rounded in shape; poriferous zones of paired petals converge toward distal ends; posterior paired petals, anterior paired petals, and petal III extending up to 56%, 66%, and 61% of corresponding test radius, respectively; at their widest point, petals bear 7 to 9 tubercles across the interporiferous zone; phyllodes typically consisting of inner series with up to 4 pores per column, outer series with up to 9 pores; medial double row of up to 13 sphaeridial pits; buccal pores large and slightly elongated.
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FEEB705498D3" blockId="25.[151,1437,151,880]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FEEB72679814" box="[199,371,351,376]" italics="true" pageId="25" pageNumber="26">Interambulacra</emphasis>
—Bourrelets relatively well-developed, indenting peristome; distinct naked zone in oral interambulacrum 5 almost extending from periproct to peristome; reduced naked zone in oral ambulacrum III; likewise, adoral tuberculation of lateral interambulacra sparse.
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FE7976659B6B" blockId="25.[151,1437,151,880]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FE7972229888" box="[199,310,461,484]" italics="true" pageId="25" pageNumber="26">Peristome</emphasis>
—Small; slightly elongated transversely; length 79% and width approximately 11% TL; sunken, with steep walls formed by distinct bourrelets; located anterior of centre, c. 32% TL away from anterior margin of test.
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FDA177F39B40" blockId="25.[151,1437,151,880]" box="[199,1255,532,557]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FDA1723B9B40" box="[199,303,533,556]" italics="true" pageId="25" pageNumber="26">Periproct</emphasis>
—Inframarginal; slightly larger than peristome, length 1214% and width 1113% TL.
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FD8376899B18" blockId="25.[151,1437,151,880]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FD83728A9B3C" bold="true" box="[199,414,567,592]" pageId="25" pageNumber="26">Geographic range.</emphasis>
Indian Ocean, from the Red Sea (Agassiz &amp; Desor 1887),
<collectingCountry id="F33E7632FFB3896CFBBBFD8377829B3C" box="[1070,1174,567,592]" name="Mauritius" pageId="25" pageNumber="26">Mauritius</collectingCountry>
(
<bibRefCitation id="EFB84B53FFB3896CFB33FD8C76739B3C" author="Mortensen, T." box="[1190,1383,568,592]" pageId="25" pageNumber="26" refId="ref35354" refString="Mortensen, T. (1948 a) A Monograph of the Echinoidea IV. 1. Holectypoida, Cassiduloida. C. A. Reitzel, Copenhagen, 371 pp." type="book" year="1948">Mortensen 1948a</bibRefCitation>
),
<collectingCountry id="F33E7632FFB3896CFAE8FD8373CE9B19" name="Sri Lanka" pageId="25" pageNumber="26">Sri Lanka</collectingCountry>
(
<bibRefCitation id="EFB84B53FFB3896CFF72FDE872709B18" author="Clark, H. L." box="[231,356,604,629]" pageId="25" pageNumber="26" pagination="81 - 283" refId="ref34331" refString="Clark, H. L. (1917) Hawaiian and other Pacific Echini, Echinoneidae, Nucleolitidae, Urechinidae, Echinocorythidae, Calymnidae, Pourtalesiidae, Palaestomatidae, Aeropsidae, Palaeopneustidae, Hemiasteridae, and Spatangidae. Memoirs of the Museum of Comparative Zoology at Harvard College, 46, 81 - 283." type="journal article" year="1917">Clark 1917</bibRefCitation>
), Bay of Bengal (
<bibRefCitation id="EFB84B53FFB3896CFD88FDE871A09B18" author="Koehler, R." box="[541,692,604,629]" pageId="25" pageNumber="26" refId="ref34949" refString="Koehler, R. (1922) Echinoderma of the Indian Museum, Part 9, An account of the Echinoidea. II. Clypeastrides et Cassidulides. Trustees of the Indian Museum, Calcutta, 161 pp." type="book" year="1922">Koehler 1922</bibRefCitation>
), and Northern
<collectingCountry id="F33E7632FFB3896CFCCEFDE870A99B19" box="[859,957,604,629]" name="Australia" pageId="25" pageNumber="26">Australia</collectingCountry>
(
<bibRefCitation id="EFB84B53FFB3896CFC5CFDE8775B9B19" author="Clark, H. L." box="[969,1103,604,629]" pageId="25" pageNumber="26" refId="ref34415" refString="Clark, H. L. (1925 a) A Catalogue of the Recent Sea-Urchins (Echinoidea) in the Collection of the British Museum (Natural History). Oxford University Press, London, 250 pp." type="book" year="1925">Clark 1925a</bibRefCitation>
) to East Indies (
<bibRefCitation id="EFB84B53FFB3896CFB6EFDE876859B18" author="Agassiz, A." box="[1275,1425,604,629]" pageId="25" pageNumber="26" pagination="379 - 628" refId="ref32647" refString="Agassiz, A. (1872 - 1874) Revision of the Echini. Illustrated Catalogue of the Museum of Comparative Zoology at Harvard College, 7 (Pt. 1 - 2, 3 &amp; 4) i-xii + 1 - 378, pls. 1 - 49 (1872), 379 - 628 + 1, pls. 50 - 77 (1873) &amp; 629 - 762, pls. 78 - 94 (1874)." type="journal article" year="1872">Agassiz 1872</bibRefCitation>
).
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FDCB71F69BF4" blockId="25.[151,1437,151,880]" box="[199,738,639,664]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FDCB72BE9BF4" bold="true" box="[199,426,639,664]" pageId="25" pageNumber="26">Bathymetric range.</emphasis>
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(
<bibRefCitation id="EFB84B53FFB3896CFD84FD3471C29BF4" author="Mortensen, T." box="[529,726,640,664]" pageId="25" pageNumber="26" refId="ref35354" refString="Mortensen, T. (1948 a) A Monograph of the Echinoidea IV. 1. Holectypoida, Cassiduloida. C. A. Reitzel, Copenhagen, 371 pp." type="book" year="1948">Mortensen 1948a</bibRefCitation>
).
</paragraph>
<paragraph id="8B9636A2FFB3896CFF52FD1072D49A69" blockId="25.[151,1437,151,880]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FD10717C9BD1" bold="true" box="[199,616,676,701]" pageId="25" pageNumber="26">
Observed occurrence in
<collectingCountry id="F33E7632FFB3896CFE7CFD1071779BD1" box="[489,611,676,701]" name="Sri Lanka" pageId="25" pageNumber="26">Sri Lanka</collectingCountry>
.
</emphasis>
This species typically occurs in sandy patches between patch reefs along the western, north-western, and northern coasts of Sri Lanka at depths of
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(
<figureCitation id="13122A27FFB3896CFBA3FD73779D9B8C" box="[1078,1161,711,736]" captionStart="FIGURE 18" captionStartId="24.[151,250,1877,1899]" captionTargetBox="[182,1426,219,1840]" captionTargetId="figure@24.[151,1436,193,1856]" captionTargetPageId="24" captionText="FIGURE 18. Distribution map of Echinolampas ovata recorded in this study." httpUri="https://zenodo.org/record/2617495/files/figure.png" pageId="25" pageNumber="26">Fig. 18</figureCitation>
). First reported from Sri Lanka by de
<bibRefCitation id="EFB84B53FFB3896CFEB0FD5872A89A69" author="Loriol, P. de" box="[293,444,748,773]" pageId="25" pageNumber="26" pagination="659 - 673" refId="ref35066" refString="Loriol, P. de (1875) Note sur quelques especes nouvelles appartenant a la classe des Echinodermes. Memoires de la Societe de Physique et d'Histoire Naturelle de Geneve, 24, 659 - 673." type="journal article" year="1875">Loriol (1875)</bibRefCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C3336529FFB3896CFF52FCBB72F89A1C" pageId="25" pageNumber="26" type="discussion">
<paragraph id="8B9636A2FFB3896CFF52FCBB72F89A1C" blockId="25.[151,1437,151,880]" pageId="25" pageNumber="26">
<emphasis id="B95DEAB0FFB3896CFF52FCBB722D9A44" bold="true" box="[199,313,783,808]" pageId="25" pageNumber="26">Remarks.</emphasis>
Elongation of test was observed to vary considerably in the studied material, which is in line with the observations by
<bibRefCitation id="EFB84B53FFB3896CFEC4FC81718E9A21" author="Mortensen, T." box="[337,666,820,845]" pageId="25" pageNumber="26" refId="ref35354" refString="Mortensen, T. (1948 a) A Monograph of the Echinoidea IV. 1. Holectypoida, Cassiduloida. C. A. Reitzel, Copenhagen, 371 pp." type="book" year="1948">Mortensen (1948a: 276277)</bibRefCitation>
. The present material shows marked variations in size of the apical system and gonopore diameter.
</paragraph>
</subSubSection>
</treatment>
</document>