{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T13:13:08Z","timestamp":1791292388680,"version":"4.1.0"},"reference-count":109,"publisher":"Pensoft Publishers","license":[{"start":{"date-parts":[[2020,9,16]],"date-time":"2020-09-16T00:00:00Z","timestamp":1600214400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ZK"],"abstract":"<jats:p>Caecidae is a species-rich family of microsnails with a worldwide distribution. Typical for many groups of gastropods, caecid taxonomy is largely based on overt shell characters. However, identification of species using shell characteristics is problematic due to their rather uniform, tubular shells, the presence of different growth stages, and a high degree of intraspecific variability. In the present study, a first integrative approach to caecid taxonomy is provided using light-microscopic investigation with microsculptural analyses and multi-marker barcoding, in conjunction with molecular species delineation analyses (ABGD, haplotype networks, GMYC, and bPTP). In total 132 specimens of<jats:italic>Caecum<\/jats:italic>and<jats:italic>Meioceras<\/jats:italic>collected during several sampling trips to Central America were analyzed and delineated into a minimum of 19 species to discuss putative synonyms, and supplement the original descriptions. Molecular phylogenetic analyses suggest<jats:italic>Meioceras nitidum<\/jats:italic>and<jats:italic>M. cubitatum<\/jats:italic>should be reclassified as<jats:italic>Caecum<\/jats:italic>, and the genus<jats:italic>Meioceras<\/jats:italic>might present a junior synonym of<jats:italic>Caecum<\/jats:italic>. Meiofaunal caecids morphologically resembling<jats:italic>C. glabrum<\/jats:italic>from the Northeast Atlantic are a complex of cryptic species with independent evolutionary origins, likely associated with multiple habitat shifts to the mesopsammic environment.<jats:italic>Caecum invisibile<\/jats:italic>Egger &amp;amp; J\u00f6rger,<jats:bold>sp. nov.<\/jats:bold>is formally described based on molecular diagnostic characters. This first integrative approach towards the taxonomy of Caecidae increases the known diversity, reveals the need for a reclassification of the genus<jats:italic>Caecum<\/jats:italic>and serves as a starting point for a barcoding library of the family, thereby enabling further reliable identifications of these taxonomically challenging microsnails in future studies.<\/jats:p>","DOI":"10.3897\/zookeys.968.52986","type":"journal-article","created":{"date-parts":[[2020,9,16]],"date-time":"2020-09-16T13:29:00Z","timestamp":1600262940000},"page":"1-42","source":"Crossref","is-referenced-by-count":5,"title":["Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America"],"prefix":"10.3897","volume":"968","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6678-2549","authenticated-orcid":true,"given":"Christina","family":"Egger","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timea P.","family":"Neusser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jon","family":"Norenburg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesca","family":"Leasi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Buge","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angelo","family":"Vannozzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Regina L.","family":"Cunha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cymon J.","family":"Cox","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katharina M.","family":"J\u00f6rger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2258","published-online":{"date-parts":[[2020,9,16]]},"reference":[{"key":"52986_B1","first-page":"9","article-title":"The species usually reported in the subgenus Brochina (Caecum, Caecidae, Caenogastropoda) from Brazil and some relevant type specimens from western Atlantic.","volume":"37","author":"Absal\u00e3o","year":"2001","journal-title":"Bollettino Malacologico"},{"key":"52986_B2","doi-asserted-by":"publisher","DOI":"10.1127\/arch.moll\/131\/2002\/167"},{"key":"52986_B3","doi-asserted-by":"publisher","DOI":"10.1080\/00222936808695819"},{"key":"52986_B4","first-page":"53","article-title":"Phylogeny of the Caecidae (Caenogastropoda).","volume":"79","author":"Bandel","year":"1996","journal-title":"Mitteilungen aus dem Geologisch-Pal\u00e4ontologischen Institut der Universit\u00e4t Hamburg"},{"key":"52986_B5","first-page":"23","article-title":"Getting the most out of minute singletons: molecular data from SEM-samples in Solenogastres (Mollusca).","volume":"66","author":"Bergmeier","year":"2016","journal-title":"The Malacologist"},{"key":"52986_B6","doi-asserted-by":"publisher","DOI":"10.1016\/j.tree.2006.11.004"},{"key":"52986_B7","doi-asserted-by":"publisher","DOI":"10.1201\/EBK1420095012-c6"},{"key":"52986_B8","doi-asserted-by":"publisher","DOI":"10.5962\/bhl.title.143671"},{"key":"52986_B9","author":"Carpenter","year":"1855\u20131857","journal-title":"Catalogue of the Reigen collection of Mazatlan Mollusca in the British Museum."},{"key":"52986_B10","author":"Carpenter","year":"1857","journal-title":"Philip Pearsall Carpenter\u2019s Illustrations of Mollusk Specimens, Accompanied by Species Indexes to Selected Works by Carpenter."},{"key":"52986_B11","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7998.1858.tb06397.x"},{"key":"52986_B12","doi-asserted-by":"publisher","DOI":"10.1093\/oxfordjournals.molbev.a026334"},{"key":"52986_B13","author":"Chambers","year":"2009","journal-title":"British Seashells: A Guide for Collectors and Beachcombers."},{"key":"52986_B14","doi-asserted-by":"publisher","DOI":"10.1080\/03745486009494811"},{"key":"52986_B15","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-294x.2000.01020.x"},{"key":"52986_B16","author":"Cooke","year":"1936","journal-title":"Geology of the Coastal Plain of South Carolina. 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