{{Short description|Species of gastropod}} {{Use dmy dates|date=January 2021}} {{Speciesbox | image = Mantled_keyhole_limpet_at_Lorry_Bay_PB092330.JPG | image_caption = | taxon = Pupillaea aperta | authority = (Sowerby I, 1825) | synonyms_ref = <ref name="WoRMS" /> | synonyms = *''Fissurella aperta'' <small>Sowerby I, 1825</small> *''Fissurellidea aperta'' <small>(Sowerby I, 1825)</small> }}
'''''Pupillaea aperta''''', common name the '''mantled keyhole limpet''', is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.<ref name="WoRMS">{{WRMS species|225005|''Pupillaea aperta'' (G.B. Sowerby I, 1825)||15 January 2013}}</ref>
==Description== {{Expand section|date=January 2013|small=no}}
The size of the shell varies between 23 mm and 50 mm.
''Pupillaea aperta'' has a flattened shell with an aperture on the peak. It also varies in color.<ref>{{Cite web |title=Pupillaea aperta |url=https://reeflifesurvey.com/species/pupillaea-aperta/ |access-date=2023-05-06 |website=Reef Life Survey {{!}} Reef Species of the World |language=en}}</ref> ==Distribution== This marine species occurs off Namibia to North Transkei, South Africa.
<gallery> File:Pupillaea_aperta_01.JPG|Shell </gallery>
==References== {{Reflist}} * Kilburn, R.N. & Rippey, E. (1982) ''Sea Shells of Southern Africa''. Macmillan South Africa, Johannesburg, xi + 249 pp. page(s): 36 * Steyn, D.G. & Lussi, M. (1998) ''Marine Shells of South Africa. An Illustrated Collector's Guide to Beached Shells''. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 12 * Petit R.E. (2009) ''George Brettingham Sowerby, I, II & III: their conchological publications and molluscan taxa''. Zootaxa 2189: 1–218.
==External links== * {{Gastropods.com|key=6|id=2636|title=''Fissurellidea aperta''|access-date=16 January 2019}} * [https://books.google.com/books?id=W_2QB8ftLgcC Branch, G.M. et al. (2002). ''Two Oceans''. 5th impression. David Philip, Cate Town & Johannesburg]
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{{DEFAULTSORT:Pupillaea aperta}} Category:Fissurellidae Category:Gastropods described in 1825 Category:Taxa named by George Brettingham Sowerby I
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