<documentid="A64B95F93CB53DB5C708AB6B3C39713C"ID-CLB-Dataset="307087"ID-DOI="10.3897/zse.101.139762"ID-GBIF-Dataset="ead9247a-c7d9-4cd2-a5a9-5587dfabe41b"ID-ZooBank="CA9EB3F3-C6DD-4C11-8F00-668D2E3D390A"ID-publisher-id="139762"URI-arpha="063A89A7-9A70-5547-AF7B-2A63AD568DE2"URI-zoobank="http://zoobank.org/CA9EB3F3-C6DD-4C11-8F00-668D2E3D390A"XM.bibliography_approvedBy="admin"XM.materialsCitations_approvedBy="admin"XM.taxonomicNames_approvedBy="admin"XM.treatments_approvedBy="admin"article-type="research-article"checkinTime="1735830999042"checkinUser="pensoft"docAuthor="Hou, Kaiyu, Liu, Xiaoyan, Zhang, Liping, Li, Gaiping & Wu, Ruiwen"docDate="2025"docId="3B1846D756DD586C961D03382DA1742A"docLanguage="en"docName="Zoosystematics and Evolution 101(1): 35-44"docOrigin="Zoosystematics and Evolution 101 (1)"docSource="https://zse.pensoft.net/article/139762/download/xml/"docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic"docStyleName="PensoftTaxPub.0000.journal_article.generic"docTitle="Nodularia guiensis Hou & Wu 2025, sp. nov."docType="treatment"docVersion="4"dtd-version="3.0"lastPageNumber="44"masterDocId="063A89A79A705547AF7B2A63AD568DE2"masterDocTitle="Revisiting the genus Nodularia (Bivalvia, Unionidae): Mitochondrial phylogenomics and the description of a new species"masterLastPageNumber="44"masterPageNumber="35"pageNumber="35"updateTime="1735835459686"updateUser="admin">
<mods:titleid="9892FBF06BC294535A0D5D901DAADC2D">Revisiting the genus Nodularia (Bivalvia, Unionidae): Mitochondrial phylogenomics and the description of a new species</mods:title>
<taxonomicNameid="0AD9A27AA2C4A119C7B17DBA42A83BDC"authority="Hou & Wu"authorityName="Hou & Wu"authorityYear="2025"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="guiensis"status="sp. nov.">
<figureCitationid="ACA48119A563095EC7B33838BD236628"captionStart="Figure 2"captionStartId="F2"captionText="Figure 2. Shells and anatomical features of Nodularia guiensis sp. nov. A – D. Paratypes: SXNU _ 24090705 (A); SXNU _ 24090706 (B); SXNU _ 24090708 (C); Holotype: SXNU _ 24090707 (D); E. Anatomical features with the left valve removed. Abbreviations: aam, anterior adductor muscle; pam, posterior adductor muscle; exa, excurrent aperture; ia, incurrent aperture; f, foot; ig, inner gill; og, outer gill; m, mantle; lp, labial palp. F. Labial palps; G. Papillae in apertures. Abbreviations: p ia, papillae in incurrent aperture; p exa, papillae in excurrent aperture."figureDoi="10.3897/zse.101.139762.figure2"httpUri="https://binary.pensoft.net/fig/1212367">Fig. 2</figureCitation>
<figureCitationid="477DF96D8DAC9F4B52B9C1287FE39132"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Map of the sampling locality and habitat of Nodularia guiensis sp. nov. in Guangxi Province."figureDoi="10.3897/zse.101.139762.figure1"httpUri="https://binary.pensoft.net/fig/1212366">1 D</figureCitation>
<figureCitationid="345F113224DA5892FFF7E030FCE633C4"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Map of the sampling locality and habitat of Nodularia guiensis sp. nov. in Guangxi Province."figureDoi="10.3897/zse.101.139762.figure1"httpUri="https://binary.pensoft.net/fig/1212366">1 A – C</figureCitation>
Shell medium-sized, moderately thick, overall slender shape; anterior margin obviously indented with shell umbo resulting in lower dorsal margin. The shell morphology of this newly discovered species is highly similar to
<taxonomicNameid="6EE96C35D26A4859F899794C3B792156"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="huana">
. But the new species can be easily distinguished from other congeneric species using the COI barcode (Fig.
<figureCitationid="8221093C6D82CBA93AADE11FD974042D"captionStart="Figure 3"captionStartId="F3"captionText="Figure 3. Phylogenetic tree of Nodularia species inferred by maximum-likelihood (ML) analysis based on the COI barcode dataset. Bootstrap-support (BS) values are shown at the nodes. The red specimen codes are from this study."figureDoi="10.3897/zse.101.139762.figure3"httpUri="https://binary.pensoft.net/fig/1212368">3</figureCitation>
<taxonomicNameid="DB4FF7A84FF083DA16CBF3E0EC832EFC"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="huana">
<taxonomicNameid="6D915891FDC83C5D32AD922D80DC5670"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="fusiformans">
<tableCitationid="D0A43FB0808D8CC1796C17D0CF89EDC3"captionStart="Table 1"captionStartId="T1"captionText="Table 1. Intra- and interspecific genetic distances assessed using 1000 bootstrap replicates based on the uncorrected p - distance model in MEGA 7.0."httpUri="http://table.plazi.org/id/F6AB25B2898E3B5CE4EF3978612652D9"tableUuid="F6AB25B2898E3B5CE4EF3978612652D9">1</tableCitation>
<taxonomicNameid="8ADCA2245AE48E07548C31D50C0D383C"authorityName="Hou & Wu"authorityYear="2025"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="guiensis"status="sp. nov.">
<taxonomicNameid="FC545E46D8E9446AA637003AD2F6ADC9"baseAuthorityName="Griffith & Pidgeon"baseAuthorityYear="1833"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="douglasiae">
<taxonomicNameid="D966CB33A9336C077820F51B4EA980EB"authorityName="J. H. Lee, S. K. Kim, Bogan & T. Kondo"authorityYear="2020"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="breviconcha">
<taxonomicNameid="51D2C3D624A2B94793D668040739A117"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="huana">
<taxonomicNameid="946FB6F9D10026BC8F018444B0856603"baseAuthorityName="E. von Martens"baseAuthorityYear="1877"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="nipponensis">
<taxonomicNameid="9848DFC34AB884614EBB3D46DF8ABD2A"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="dualobtusus">
<taxonomicNameid="2B933FFF40B74F4724137D7BA02E53DA"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="hanensis">
<taxonomicNameid="AE1ACB7C7015B2A572B3A0A448DCA0B1"authorityName="R. Wu & L. Liu"authorityYear="2024"class="Bivalvia"family="Unionidae"genus="Nodularia"kingdom="Animalia"order="Unionida"phylum="Mollusca"rank="species"species="fusiformans">
Shell medium-sized, moderately thick, overall slender shape; dorsal margin curved; anterior margin round; ventral margin nearly straight; posterior margin slightly blunt, located at almost 1 / 2 of shell height; umbo located at 1 / 4 of shell length and slightly higher than the dorsal margin; umbo sculptured with rough nodes or
-shape ridges; epidermis yellow-brown and young epidermis light brown with a little green, shell surface covered with fine to rough concentric ridges; ligament short, narrow, and brown; anterior adductor muscle attachment elliptical; posterior adductor muscle attachment round or oval and smooth; mantle muscle attachment obvious; left valve with two pseudocardinal teeth, lamellae, anterior tooth wide and flat, posterior tooth slightly thick and pyramidal, anterior pseudocardinal tooth of some individuals split into two pieces, and having two lateral teeth; right valve with one thick pseudocardinal tooth and one lateral tooth; lateral teeth of both valves long and compressed; nacre silvery-white to bluish-white, and shiny (Fig.
<figureCitationid="9FB566B2E7C32BC756AC7F7C143950B2"captionStart="Figure 2"captionStartId="F2"captionText="Figure 2. Shells and anatomical features of Nodularia guiensis sp. nov. A – D. Paratypes: SXNU _ 24090705 (A); SXNU _ 24090706 (B); SXNU _ 24090708 (C); Holotype: SXNU _ 24090707 (D); E. Anatomical features with the left valve removed. Abbreviations: aam, anterior adductor muscle; pam, posterior adductor muscle; exa, excurrent aperture; ia, incurrent aperture; f, foot; ig, inner gill; og, outer gill; m, mantle; lp, labial palp. F. Labial palps; G. Papillae in apertures. Abbreviations: p ia, papillae in incurrent aperture; p exa, papillae in excurrent aperture."figureDoi="10.3897/zse.101.139762.figure2"httpUri="https://binary.pensoft.net/fig/1212367">2</figureCitation>
The papillae of the incurrent aperture conical, arranged in two to three rows; weakly developed papillae of the excurrent aperture arranged in one row, and knobs or raised bumps dense; the pigmentation of the incurrent and excurrent aperture absent; labial palps medium-thick (Fig.
<figureCitationid="B152D6354AD783E33CE32BB594C0E20D"captionStart="Figure 2"captionStartId="F2"captionText="Figure 2. Shells and anatomical features of Nodularia guiensis sp. nov. A – D. Paratypes: SXNU _ 24090705 (A); SXNU _ 24090706 (B); SXNU _ 24090708 (C); Holotype: SXNU _ 24090707 (D); E. Anatomical features with the left valve removed. Abbreviations: aam, anterior adductor muscle; pam, posterior adductor muscle; exa, excurrent aperture; ia, incurrent aperture; f, foot; ig, inner gill; og, outer gill; m, mantle; lp, labial palp. F. Labial palps; G. Papillae in apertures. Abbreviations: p ia, papillae in incurrent aperture; p exa, papillae in excurrent aperture."figureDoi="10.3897/zse.101.139762.figure2"httpUri="https://binary.pensoft.net/fig/1212367">2</figureCitation>
