<documentID-CLB-Dataset="20961"ID-DOI="http://dx.doi.org/10.3897/zookeys.968.52986"ID-GBIF-Dataset="873f585d-77da-4e41-b3f3-285e5cadfd1d"ID-PMC="PMC7511454"ID-Pensoft-Pub="1313-2970-968-1"ID-Pensoft-UUID="0ABFD46F13B65EEE97867BC2166A59E3"ID-PubMed="33005079"ID-ZooBank="4296306E51B94873AB6F4B475194CA98"ModsDocID="1313-2970-968-1"checkinTime="1600294176945"checkinUser="pensoft"docAuthor="Egger, Christina, Neusser, Timea P., Norenburg, Jon, Leasi, Francesca, Buge, Barbara, Vannozzi, Angelo, Cunha, Regina L., Cox, Cymon J. & Joerger, Katharina M."docDate="2020"docId="A8F808ECA6D65DC898E775F5C62C4F1B"docLanguage="en"docName="ZooKeys 968: 1-42"docOrigin="ZooKeys 968"docSource="http://dx.doi.org/10.3897/zookeys.968.52986"docTitle="Caecum cf. semilaeve Carpenter 1857"docType="treatment"docVersion="7"id="0ABFD46F13B65EEE97867BC2166A59E3"lastPageNumber="1"masterDocId="0ABFD46F13B65EEE97867BC2166A59E3"masterDocTitle="Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America"masterLastPageNumber="42"masterPageNumber="1"pageNumber="1"updateTime="1732687288945"updateUser="ExternalLinkService">
<mods:titleid="1D3BD248D0404409B96FF4DA0A361979">Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America</mods:title>
<mods:affiliationid="C68E4B10C1DADC3A34E5B2B32ADB4F0F">Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA</mods:affiliation>
<mods:affiliationid="B37EE8B1515BE06DA8F02233BDE156B5">Department of Biology, Geology and Environmental Science. University of Tennessee at Chattanooga. 615 McCallie Ave. Chattanooga, TN 37403, USA</mods:affiliation>
<mods:namePartid="15AF55628DC99230C903BF58929B3391">Cunha, Regina L.</mods:namePart>
<mods:affiliationid="DEA0817090994F97DD4EC68B544A27B5">CCMAR, Campus de Gambelas, Universidade do Algarve, 8005 - 139 Faro, Portugal</mods:affiliation>
<mods:affiliationid="3CE1459141887246FFCA59DD87117EE0">CCMAR, Campus de Gambelas, Universidade do Algarve, 8005 - 139 Faro, Portugal</mods:affiliation>
<figureCitationid="53C7929E34501C359B8B56F31CEBCFEC"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. A-F Caecum pulchellum A, C, E, F specimen ZSM-Mol- 20090485 B, D juvenile specimen ZSM-Mol- 20200118 A, B light microscopic pictures C, D SEM scans E close-up of mucro and F microsculpture H-K C. donmoorei, specimen USNM 1618844 H-K C. regulare, specimen ZSM-Mol- 20100321, juvenile H light microscopic picture I SEM scans J close-up of mucro and K microsculpture L-T C. cf. teres and C. cf. strangulatum L specimen ZSM-Mol- 20200033, juvenile specimen with larval shell still attached M, N, Q, S specimen ZSM-Mol- 20200032, juvenile M light microscopic picture N SEM scan Q close-up of mucro and S microsculpture O, P, R, T C. cf. strangulatum, specimen ZSM-Mol- 20200038, juvenile O light microscopic picture P SEM scan R close-up of mucro and T microsculpture U-X C. cf. semilaeve, specimen ZSM-Mol- 20200034 U Light microscopic picture V SEM scan W close-up of mucro and X microsculpture. Scale bars: 10 µm (F, S, T, W, X); 20 µm (J, K, Q, R); 50 µm (E); 100 µm (H, I, L-P, U, V); 200 µm (A-D)."figureDoi="10.3897/zookeys.968.52986.figure7"httpUri="https://binary.pensoft.net/fig/453120"pageId="0"pageNumber="1">7U-X</figureCitation>
<figureCitationid="4C21A0CEA4775CA8C110A0DD3CE2AF80"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. A-F Caecum pulchellum A, C, E, F specimen ZSM-Mol- 20090485 B, D juvenile specimen ZSM-Mol- 20200118 A, B light microscopic pictures C, D SEM scans E close-up of mucro and F microsculpture H-K C. donmoorei, specimen USNM 1618844 H-K C. regulare, specimen ZSM-Mol- 20100321, juvenile H light microscopic picture I SEM scans J close-up of mucro and K microsculpture L-T C. cf. teres and C. cf. strangulatum L specimen ZSM-Mol- 20200033, juvenile specimen with larval shell still attached M, N, Q, S specimen ZSM-Mol- 20200032, juvenile M light microscopic picture N SEM scan Q close-up of mucro and S microsculpture O, P, R, T C. cf. strangulatum, specimen ZSM-Mol- 20200038, juvenile O light microscopic picture P SEM scan R close-up of mucro and T microsculpture U-X C. cf. semilaeve, specimen ZSM-Mol- 20200034 U Light microscopic picture V SEM scan W close-up of mucro and X microsculpture. Scale bars: 10 µm (F, S, T, W, X); 20 µm (J, K, Q, R); 50 µm (E); 100 µm (H, I, L-P, U, V); 200 µm (A-D)."figureDoi="10.3897/zookeys.968.52986.figure7"httpUri="https://binary.pensoft.net/fig/453120"pageId="0"pageNumber="1">7U</figureCitation>
). Size 1.0 mm long, 0.5 mm wide. Tube gradually narrowing towards posterior end and evenly curved. Septum blistered, entirely below posterior tube end (Fig.
<figureCitationid="EEEAF8DAB5BE2839B657548314EA72AE"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. A-F Caecum pulchellum A, C, E, F specimen ZSM-Mol- 20090485 B, D juvenile specimen ZSM-Mol- 20200118 A, B light microscopic pictures C, D SEM scans E close-up of mucro and F microsculpture H-K C. donmoorei, specimen USNM 1618844 H-K C. regulare, specimen ZSM-Mol- 20100321, juvenile H light microscopic picture I SEM scans J close-up of mucro and K microsculpture L-T C. cf. teres and C. cf. strangulatum L specimen ZSM-Mol- 20200033, juvenile specimen with larval shell still attached M, N, Q, S specimen ZSM-Mol- 20200032, juvenile M light microscopic picture N SEM scan Q close-up of mucro and S microsculpture O, P, R, T C. cf. strangulatum, specimen ZSM-Mol- 20200038, juvenile O light microscopic picture P SEM scan R close-up of mucro and T microsculpture U-X C. cf. semilaeve, specimen ZSM-Mol- 20200034 U Light microscopic picture V SEM scan W close-up of mucro and X microsculpture. Scale bars: 10 µm (F, S, T, W, X); 20 µm (J, K, Q, R); 50 µm (E); 100 µm (H, I, L-P, U, V); 200 µm (A-D)."figureDoi="10.3897/zookeys.968.52986.figure7"httpUri="https://binary.pensoft.net/fig/453120"pageId="0"pageNumber="1">7W</figureCitation>
). Posterior end fringed and in specimen ZSM-Mol-20200034 still connected partly with mucro indicating a recent shedding of transitional septum. Mucro with elongated, rounded tip, only slightly extending from tube (Fig.
<figureCitationid="2A6686C7A00647E8E66F0FBC4FC20563"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. A-F Caecum pulchellum A, C, E, F specimen ZSM-Mol- 20090485 B, D juvenile specimen ZSM-Mol- 20200118 A, B light microscopic pictures C, D SEM scans E close-up of mucro and F microsculpture H-K C. donmoorei, specimen USNM 1618844 H-K C. regulare, specimen ZSM-Mol- 20100321, juvenile H light microscopic picture I SEM scans J close-up of mucro and K microsculpture L-T C. cf. teres and C. cf. strangulatum L specimen ZSM-Mol- 20200033, juvenile specimen with larval shell still attached M, N, Q, S specimen ZSM-Mol- 20200032, juvenile M light microscopic picture N SEM scan Q close-up of mucro and S microsculpture O, P, R, T C. cf. strangulatum, specimen ZSM-Mol- 20200038, juvenile O light microscopic picture P SEM scan R close-up of mucro and T microsculpture U-X C. cf. semilaeve, specimen ZSM-Mol- 20200034 U Light microscopic picture V SEM scan W close-up of mucro and X microsculpture. Scale bars: 10 µm (F, S, T, W, X); 20 µm (J, K, Q, R); 50 µm (E); 100 µm (H, I, L-P, U, V); 200 µm (A-D)."figureDoi="10.3897/zookeys.968.52986.figure7"httpUri="https://binary.pensoft.net/fig/453120"pageId="0"pageNumber="1">7W</figureCitation>
<figureCitationid="847EC25135576517CB4CFC1116CF04CD"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. A-F Caecum pulchellum A, C, E, F specimen ZSM-Mol- 20090485 B, D juvenile specimen ZSM-Mol- 20200118 A, B light microscopic pictures C, D SEM scans E close-up of mucro and F microsculpture H-K C. donmoorei, specimen USNM 1618844 H-K C. regulare, specimen ZSM-Mol- 20100321, juvenile H light microscopic picture I SEM scans J close-up of mucro and K microsculpture L-T C. cf. teres and C. cf. strangulatum L specimen ZSM-Mol- 20200033, juvenile specimen with larval shell still attached M, N, Q, S specimen ZSM-Mol- 20200032, juvenile M light microscopic picture N SEM scan Q close-up of mucro and S microsculpture O, P, R, T C. cf. strangulatum, specimen ZSM-Mol- 20200038, juvenile O light microscopic picture P SEM scan R close-up of mucro and T microsculpture U-X C. cf. semilaeve, specimen ZSM-Mol- 20200034 U Light microscopic picture V SEM scan W close-up of mucro and X microsculpture. Scale bars: 10 µm (F, S, T, W, X); 20 µm (J, K, Q, R); 50 µm (E); 100 µm (H, I, L-P, U, V); 200 µm (A-D)."figureDoi="10.3897/zookeys.968.52986.figure7"httpUri="https://binary.pensoft.net/fig/453120"pageId="0"pageNumber="1">7X</figureCitation>
The examined shells all belong to juveniles due to their fragile character and the unfinished aperture. Therefore, it will be critical to reassess these observations based on mature shell structures, as sculpturing is known to be variable during development (see e.g.,
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, Mexico, Eastern Pacific, thus with geographic proximity to the localities of our investigated specimens (Achotines, Panama, eastern Pacific). We therefore assign our material to
<taxonomicNameid="79F848CF8A663283AD40E3E999809B1A"lsidName="C. elongatum subsp. var. var. semilaeve"pageId="0"pageNumber="1"rank="variety"species="elongatum"subSpecies="var."variety="semilaeve">C. elongatum var. semilaeve</taxonomicName>
