<documentid="2B1DEA6E17A6ED91684791DB0AAD0183"ID-DOI="10.5852/ejt.2024.962.2683"ID-ISSN="2118-9773"ID-Zenodo-Dep="13947260"ID-ZooBank="40171C5B-90EB-4641-91FF-EA8CA2C60D23"IM.bibliography_approvedBy="carolina"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="carolina"IM.metadata_approvedBy="carolina"IM.tables_requiresApprovalFor="GgImagineBatch"IM.taxonomicNames_approvedBy="felipe"IM.treatmentCitations_approvedBy="carolina"IM.treatments_approvedBy="carolina"checkinTime="1729183243575"checkinUser="plazi"docAuthor="Ramos-Sánchez, Mariela"docDate="2024"docId="03F2DF380251FFA7FDDE4F4AFC567976"docLanguage="en"docName="EJT.2024.962.1-67.pdf"docOrigin="European Journal of Taxonomy 962 (1)"docSource="https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2683/12419"docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1"docStyleId="EF2B578F1D15862ADE45B0C07C620911"docStyleName="EJT.2018-.journal_article.type1"docStyleVersion="14"docTitle="Spinicirrus inequalis Hyman 1953"docType="treatment"docVersion="1"lastPageNumber="28"masterDocId="FFCBA740024AFFBBFF994B10FFC27830"masterDocTitle="The polyclads (Platyhelminthes: Polycladida) from the Tropical Eastern Pacific: Commented checklist and description of a new species"masterLastPageNumber="67"masterPageNumber="1"pageNumber="28"updateTime="1729617757279"updateUser="carolina"zenodo-license-document="CC-BY-4.0"zenodo-license-figures="CC-BY-4.0"zenodo-license-treatments="UNSPECIFIED">
<mods:titleid="B96FDDE6DEBB021D778D0B2948B3879B">The polyclads (Platyhelminthes: Polycladida) from the Tropical Eastern Pacific: Commented checklist and description of a new species</mods:title>
<mods:affiliationid="7FFA6CB6F48637FC0D66B01A1EAE2063">Doctorado en Ciencias Biológico Agropecuarias, Área Ciencias Biológico Agropecuaria y Pesquera, Ciudad de la cultura “ Amado Nervo ”, Tepic, Nayarit, 63000, Mexico. & Laboratorio de Sistemática de Invertebrados Marinos (LABSIM), Universidad del Mar, campus Puerto Ángel, Ciudad Universitaria, Puerto Ángel, Oaxaca, 70902, Mexico.</mods:affiliation>
<bibRefCitationid="EFCA13DF0251FFA0FE224F8CFD657C86"author="Hyman L. H."box="[443,679,1179,1206]"pageId="27"pageNumber="28"pagination="265 - 392"refId="ref29610"refString="Hyman L. H. 1953 a. The polyclad flatworm of the Pacific coast of North America. Bulletin of the American Museum of Natural History 100 (2): 265 - 392. Available from http: // hdl. handle. net / 2246 / 1028 [accessed 2 Aug. 2023]."type="journal article"year="1953">Hyman, 1953a: 347</bibRefCitation>
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<treatmentCitationid="0AFA483F0251FFA0FE494E11FD527D2A"author="Brusca R. C."box="[464,656,1280,1307]"page="69"pageId="27"pageNumber="28"year="2005">
<bibRefCitationid="EFCA13DF0251FFA0FE494E11FD527D2A"author="Brusca R. C."box="[464,656,1280,1307]"pageId="27"pageNumber="28"pagination="1 - 429"refId="ref28280"refString="Brusca R. C. 2005. Platyhelminthes & Nemertea. In: Hendricky M. E., Brusca R. C. & Findley L. T. (eds) Listado y Distribucion de la Macrofauna del Golfo de California, Mexico: 1 - 429. Arizona - Sonora Desert Museum, Tucson."type="book chapter"year="2005">Brusca 2005: 69</bibRefCitation>
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is characterized by an elongated body with a rounded anterior end, cerebral eyes arranged in two groups and distributed in a rounded shape and tentacular eyes distributed in two continuous bands; without nuchal tentacles. The male reproductive system lacks bulbs and spermiducal vesicles, presents a cirrus sac armed with teeth; in sagittal view, a glandular pouch is observed positioned in the anterior region of the spermiducal vesicles, with teeth distributed in two groups: a pair in the region posterior to the glandular pouch and approximately two pairs in the region anterior to the male atrium (
<bibRefCitationid="EFCA13DF0251FFA0FF5F4C33FE6C7F0E"author="Hyman L. H."box="[198,430,1827,1854]"pageId="27"pageNumber="28"pagination="265 - 392"refId="ref29610"refString="Hyman L. H. 1953 a. The polyclad flatworm of the Pacific coast of North America. Bulletin of the American Museum of Natural History 100 (2): 265 - 392. Available from http: // hdl. handle. net / 2246 / 1028 [accessed 2 Aug. 2023]."type="journal article"year="1953">Hyman 1953a: 352</bibRefCitation>
, fig. 117); in ventral view, these spines are distributed in two groups: one formed by a pair of teeth and the second group presents a total of 15 teeth (
<bibRefCitationid="EFCA13DF0251FFA0FC784C57FB0B7F51"author="Hyman L. H."box="[993,1225,1862,1889]"pageId="27"pageNumber="28"pagination="265 - 392"refId="ref29610"refString="Hyman L. H. 1953 a. The polyclad flatworm of the Pacific coast of North America. Bulletin of the American Museum of Natural History 100 (2): 265 - 392. Available from http: // hdl. handle. net / 2246 / 1028 [accessed 2 Aug. 2023]."type="journal article"year="1953">Hyman 1953a: 352</bibRefCitation>
, fig. 116). The species also has an oval digitiform prostatic vesicle. The female reproductive system presents a dorsally positioned vagina without Lang’s vesicle.
<bibRefCitationid="EFCA13DF0251FFA0FD344C9DFCA57F98"author="Hyman L. H."box="[685,871,1933,1960]"pageId="27"pageNumber="28"pagination="265 - 392"refId="ref29610"refString="Hyman L. H. 1953 a. The polyclad flatworm of the Pacific coast of North America. Bulletin of the American Museum of Natural History 100 (2): 265 - 392. Available from http: // hdl. handle. net / 2246 / 1028 [accessed 2 Aug. 2023]."type="journal article"year="1953">Hyman (1953a)</bibRefCitation>
schematized an elongated sac anterior to the vagina, however, the functionality of this structure is unknown.
<bibRefCitationid="EFCA13DF0251FFA0FC584CA1FBBE7FFB"author="Hyman L. H."box="[961,1148,1968,1995]"pageId="27"pageNumber="28"pagination="265 - 392"refId="ref29610"refString="Hyman L. H. 1953 a. The polyclad flatworm of the Pacific coast of North America. Bulletin of the American Museum of Natural History 100 (2): 265 - 392. Available from http: // hdl. handle. net / 2246 / 1028 [accessed 2 Aug. 2023]."type="journal article"year="1953">Hyman (1953a)</bibRefCitation>
suggested collecting more specimens to better define the specific composition of the reproductive system of the species, as well as its systematic position within the family
