<documentid="4163EE8EC425892BAEAAE49225CD0D84"ID-CLB-Dataset="302116"ID-DOI="10.11646/zootaxa.5497.2.2"ID-GBIF-Dataset="6cc702cb-d090-46db-8b32-1cfaa255b312"ID-ISSN="1175-5326"ID-Zenodo-Dep="13618112"ID-ZooBank="F29D526F-79AC-469B-BA88-3EF640EEA1E1"IM.bibliography_approvedBy="tatiana"IM.illustrations_approvedBy="tatiana"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.tables_approvedBy="tatiana"IM.taxonomicNames_approvedBy="tatiana"IM.treatmentCitations_approvedBy="felipe"IM.treatments_approvedBy="tatiana"checkinTime="1725025687576"checkinUser="plazi"docAuthor="Dell’Angelo, Bruno, Sosso, Maurizio & Taviani, Marco"docDate="2024"docId="039487A1FF8BFFDAFF01575AEB6AA4D4"docLanguage="en"docName="zootaxa.5497.2.2.pdf"docOrigin="Zootaxa 5497 (2)"docSource="http://dx.doi.org/10.11646/zootaxa.5497.2.2"docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article"docStyleId="647186512141C8FC8976D5BCC54AEB7D"docStyleName="Zootaxa.2013-.journal_article"docStyleVersion="9"docTitle="Acanthochitona barbarae Dell’Angelo, Sosso & Taviani, 2024, new species"docType="treatment"docVersion="7"lastPageNumber="201"masterDocId="FFADFFD9FF8DFFDDFF965251E803A325"masterDocTitle="A critical update of Mediterranean chitons (Mollusca: Polyplacophora) with the description of new taxa"masterLastPageNumber="208"masterPageNumber="194"pageNumber="200"updateTime="1732489236987"updateUser="ExternalLinkService"zenodo-license-document="CLOSED">
<mods:titleid="A3AE0AB487ABC33513BA00B7C9CE234B">A critical update of Mediterranean chitons (Mollusca: Polyplacophora) with the description of new taxa</mods:title>
<mods:affiliationid="C8DD319A210AFF05D3B3FDF2E27358B4">Istituto di Scienze Marine (ISMAR-CNR), via Gobetti 101, 40129 Bologna, Italy & Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy & Independent Researcher, via Briscata</mods:affiliation>
<taxonomicNameid="4C3D4D34FF8BFFDBFF01575AE9CEA603"ID-CoL="CJP5Q"authorityName="Dell’Angelo & Sosso & Taviani"authorityYear="2024"box="[151,461,1291,1318]"class="Polyplacophora"family="Acanthochitonidae"genus="Acanthochitona"kingdom="Animalia"order="Chitonida"pageId="6"pageNumber="200"phylum="Mollusca"rank="species"species="barbarae"status="sp. nov.">
<specimenCodeid="DB9B9ECCFF8BFFDBFE595729EA77A6B4"box="[463,628,1399,1426]"collectionCode="MZUB"country="Italy"httpUri="http://grbio.org/cool/xa0v-1feb"name="Museo di Zoologia"pageId="6"pageNumber="200">MZUB 60341</specimenCode>
<specimenCodeid="DB9B9ECCFF8BFFDBFADD5729E8E3A690"collectionCode="MZUB"country="Italy"httpUri="http://grbio.org/cool/xa0v-1feb"name="Museo di Zoologia"pageId="6"pageNumber="200">MZUB 60342</specimenCode>
This species is named after Barbara Gualandi who participated with M.T. in research on marine habitats in the Tyrrhenian Sea and to the collecting at the
<materialsCitationid="3B553CEAFF8BFFDBFE525401E934A597"ID-GBIF-Occurrence="4927609308"collectorName="S. Lucia & P. Quadri"country="Tunisia"county="Sardinia"location="Western Mediterranean"municipality="Nuoro province"pageId="6"pageNumber="200"specimenCount="1">
Intermediate valves broadly rectangular, semicarinate, elevated, apex well developed. Whole tegmentum (except JA) sculptured with large and well separated granules of variable size, rounded but truncated by a straight line, elevated, JA finely longitudinally striated and crossed by marked growth lines, each granule with a single subcentral megalaesthete and many micraesthetes. Articulamentum well developed, apophyses strongly protruding, expanded and completely surrounding tail valve, slit formula - / 1 / 2.
Head valve unknown. Intermediate valves broadly rectangular, WT/LT = 1.34, elevated (H/W = 0.38), semicarinate in anterior profile, anterior margin straight between apophyses, lateral margins whose partly straight and partly rounded profile gives the valve a nearly pentagonal shape, posterior margin almost straight on both sides of pronounced apex, jugal area triangular, much raised. Tail valve circular, WT/LT = 1.07, very elevated, jugal area raised, mucro well evident in subcentral position, antemucronal slope straight, postmucronal slope slightly concave just behind mucro.
</paragraph>
<paragraphid="8B8236B7FF8AFFDAFF51528EEB3EA240"blockId="7.[151,1437,151,681]"pageId="7"pageNumber="201">Whole tegmentum (except JA) sculptured with large and well separated granules, rounded but truncated by a straight line, elevated, with flat surface, jugal area finely longitudinally striated and crossed by marked growth lines, pectinated in upper edge; granules of variable size, with a single subcentral located megalaesthete and many micraesthetes, mainly grouped near straight line of granules.</paragraph>
<paragraphid="8B8236B7FF8AFFDAFF51533EECF5A288"blockId="7.[151,1437,151,681]"pageId="7"pageNumber="201">Articulamentum well developed, expanded and completely surrounding tail valve, except for jugal margin, apophyses quadrangular and strongly protruding, delimiting a wide jugal sinus, slit formula - / 1 / 2.</paragraph>
<taxonomicNameid="4C3D4D34FF8AFFDAFED553E6EA67A2F4"authorityName="Dell’Angelo & Sosso & Taviani"authorityYear="2024"box="[323,612,439,465]"class="Polyplacophora"family="Acanthochitonidae"genus="Acanthochitona"kingdom="Animalia"order="Chitonida"pageId="7"pageNumber="201"phylum="Mollusca"rank="species"species="barbarae"status="sp. nov.">
). The valves from Sardinia have the granules rather eroded, the shape seem polygonal, in some cases almost triangular, but the straight line is visible in some better preserved granules, e.g. see PMA in
<figureCitationid="13062A32FF8AFFDAFEB25072E978A118"box="[292,379,546,573]"captionStart="FIGURE 5"captionStartId="7.[151,250,1577,1601]"captionTargetBox="[151,1436,705,1553]"captionTargetId="figure-247@7.[151,1436,705,1553]"captionTargetPageId="7"captionText="FIGURE 5. Acanthochitona barbarae sp. nov. A–H. Tyrrhenian Sea: S. Lucia (Nuoro, Sardinia): A–D. Holotype (MZUB 60341), intermediate valve, width 3.4 mm, dorsal (A), ventral (B) and frontal (C) views, and close-up of surface ornamentation (D); E–G. Paratype 1 (MZUB 60342), tail valve, width 3.8 mm, dorsal (E) and lateral (F) views, and close-up of surface ornamentation (G); H. Paratype 2 (MNHN-IM-2022-2407), intermediate valve, width 4.2 mm, dorsal view. I–L. Tunisia, Keubia, tail valve, width 2.7 mm, dorsal view (I), and close-up of surface ornamentation in dorsal (J, K) and lateral (L) views. Scale bar = 200 μm (J, K): 80 μm (L)."figureDoi="http://doi.org/10.5281/zenodo.13618128"httpUri="https://zenodo.org/record/13618128/files/figure.png"pageId="7"pageNumber="201">Fig. 5E</figureCitation>
could represent a «waste basket» containing, in fact, various taxa of still uncertain classification (
<bibRefCitationid="EFAC4B46FF8AFFDAFD055016EB79A144"author="Voncina, K. & Mikkelsen, N. T. & Morrow, C. & Ang, R. & Sigwart, J. D."box="[659,890,583,609]"pageId="7"pageNumber="201"refId="ref10691"refString="Voncina, K., Mikkelsen, N. T., Morrow, C., Ang, R. & Sigwart, J. D. (2023) Clarification of the taxonomic status of Acanthochitona discrepans (Brown, 1827) with new data for the North-East Atlantic Acanthochitona (Polyplacophora, Acanthochitonidae). Biodiversity Data Journal, 11, e 1095. https: // doi. org / 10.3897 / BDJ. 11. e 109554"type="journal volume"year="2023">
). Their biomolecular research seems to indicate this possibility for two taxa from Croatian waters. Our own study lends support to this view, although only based at present on shell morphological evidence.
<taxonomicNameid="4C3D4D34FF8AFFDAFEB65478EA2BA564"authorityName="Dell’Angelo & Sosso & Taviani"authorityYear="2024"box="[288,552,1577,1601]"class="Polyplacophora"family="Acanthochitonidae"genus="Acanthochitona"kingdom="Animalia"order="Chitonida"pageId="7"pageNumber="201"phylum="Mollusca"rank="species"species="barbarae"status="sp. nov.">
<bibRefCitationid="EFAC4B46FF8AFFDAFF0955DEE953A48C"author="Linnaeus, C."box="[159,336,1935,1961]"pageId="7"pageNumber="201"pagination="533 - 1327"refId="ref8836"refString="Linnaeus, C. (1767) n. k. In: Systema Naturae. Editio duodecima, reformata. " Vermes Testacea ". 1 (2). L. Salvii, Holmiae, pp. 533 - 1327."type="book chapter"year="1767">Linnaeus, 1767</bibRefCitation>
<bibRefCitationid="EFAC4B46FF8AFFDAFBE455DEED05A48C"author="Leloup, E."box="[1138,1286,1935,1961]"pageId="7"pageNumber="201"pagination="1 - 3"refId="ref8805"refString="Leloup, E. (1981) Acanthochiton oblongus sp. nov. Bulletin Institut Royale des sciences Naturelles de Belgique, 53 (5), 1 - 3."type="journal article"year="1981">Leloup, 1981</bibRefCitation>
</taxonomicName>
and
<taxonomicNameid="4C3D4D34FF8AFFDAFAAC55C1EABAA4EB"authority="Schmidt-Petersen, Schwabe & Haszprunar, 2015"authorityName="Schmidt-Petersen, Schwabe & Haszprunar"authorityYear="2015"class="Polyplacophora"family="Acanthochitonidae"genus="Acanthochitona"kingdom="Animalia"order="Chitonida"pageId="7"pageNumber="201"phylum="Mollusca"rank="species"species="pilosa">
<bibRefCitationid="EFAC4B46FF8AFFDAFF0155E2EABAA4EB"author="Schmidt-Petersen, J. & Schwabe, E. & Haszprunar, G."box="[151,697,1971,1998]"pageId="7"pageNumber="201"pagination="11 - 20"refId="ref9944"refString="Schmidt-Petersen, J., Schwabe, E., Haszprunar, G. (2015) Acanthochitona pilosa spec. nov., a new species of Acanthochitona Gray, 1821 from the Mediterranean (Mollusca, Polyplacophora). Spixiana, 38, 11 - 20."type="journal article"year="2015">Schmidt-Petersen, Schwabe & Haszprunar, 2015</bibRefCitation>
</taxonomicName>
(
<bibRefCitationid="EFAC4B46FF8AFFDAFD5E55E2EC11A4EB"author="Schmidt-Petersen, J. & Schwabe, E. & Haszprunar, G."box="[712,1042,1971,1998]"pageId="7"pageNumber="201"pagination="11 - 20"refId="ref9944"refString="Schmidt-Petersen, J., Schwabe, E., Haszprunar, G. (2015) Acanthochitona pilosa spec. nov., a new species of Acanthochitona Gray, 1821 from the Mediterranean (Mollusca, Polyplacophora). Spixiana, 38, 11 - 20."type="journal article"year="2015">
