{"id":34265,"date":"2022-06-12T20:01:53","date_gmt":"2022-06-12T18:01:53","guid":{"rendered":"https:\/\/opistobranquis.info\/?page_id=34265"},"modified":"2026-07-11T15:50:09","modified_gmt":"2026-07-11T13:50:09","slug":"pyrunculus-hoernesi","status":"publish","type":"page","link":"https:\/\/opistobranquis.info\/en\/guia\/cephalaspidea\/bulloidea\/pyrunculus-hoernesi\/","title":{"rendered":"Pyrunculus hoernesi"},"content":{"rendered":"

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Pyrunculus hoernesi<\/em> (Weinkauff, 1866)<\/h3>\n

\"Pyrunculus<\/div>
Pyrunculus hoernesi @ Croatia<\/em> by Pero Ugarkovi\u0107<\/center><\/span>

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WoRMS Taxonomic Information<\/h3>
Current accepted name: Pyrunculus hoernesi<\/em> (Weinkauff, 1866)<\/strong><\/div>

Current classification<\/h4>
Superdomain<\/th>Biota<\/a><\/td><\/tr>
Kingdom<\/th>Animalia<\/a><\/td><\/tr>
Phylum<\/th>Mollusca<\/a><\/td><\/tr>
Class<\/th>Gastropoda<\/a><\/td><\/tr>
Subclass<\/th>Heterobranchia<\/a><\/td><\/tr>
Infraclass<\/th>Euthyneura<\/a><\/td><\/tr>
Subterclass<\/th>Tectipleura<\/a><\/td><\/tr>
Order<\/th>Cephalaspidea<\/a><\/td><\/tr>
Superfamily<\/th>Bulloidea<\/a><\/td><\/tr>
Family<\/th>Retusidae<\/a><\/td><\/tr>
Genus<\/th>Pyrunculus<\/em><\/a><\/td><\/tr>
Species<\/th>Pyrunculus hoernesi<\/em> (Weinkauff, 1866)<\/a><\/td><\/tr><\/table>

Classification provided by the World Register of Marine Species (WoRMS). [141124<\/a>]<\/p><\/div>Taxonomic note: <\/strong>Pyrunculus hoernesi<\/em> was originally described by Weinkauff (1866) as Bulla (Cylichna) hoernesi<\/em>, reflecting the broad concept of Bulla<\/em> then applied to many small cephalaspideans. During the following century, the species was generally assigned to the genus Cylichna<\/em>, appearing in the literature under the combinations Cylichna hoernesi<\/em> and Cylichna hoernesii<\/em>. The latter is now regarded as an incorrect subsequent spelling, while the currently accepted name is Pyrunculus hoernesi<\/em> (Weinkauff, 1866) (MolluscaBase, 2026; WoRMS Editorial Board, 2026). Likewise, Cylichna cuneata<\/em> Tiberi, 1868 is currently considered a junior synonym of P. hoernesi<\/em> (Tringali & Oliverio, 2001). The transfer of the species to Pyrunculus<\/em> resulted from a revised interpretation of retusid systematics based on shell morphology and anatomical characters. Although species of Pyrunculus<\/em> and Cylichna<\/em> are superficially similar, they differ in several diagnostic features, particularly shell shape and the structure of the gizzard, which in Pyrunculus<\/em> bears three subtriangular chitinous plates, each provided with two blunt tubercles (Tringali & Oliverio, 2001). The taxonomy of Mediterranean retusids has long been complicated by their minute size, simple shell morphology and the scarcity of anatomical studies, resulting in frequent misidentifications and nomenclatural inconsistencies. The revision by Tringali and Oliverio (2001) clarified the identity of the Mediterranean representatives of Pyrunculus<\/em> and established the taxonomic framework currently adopted by MolluscaBase and the World Register of Marine Species (Bouchet et al., 2017; MolluscaBase, 2026).<\/p>\n

Synonyms<\/strong><\/p>\n