CLASSE: GASTROPODA: TERRESTRE
FAMÍLIA: GASTROCOPTIDAE
ESPÉCIE: Gastrocopta duncana Pilsbry, 1931
Tamanho médio: ~2.75 mm
Ocorrência: Equador, Arquipélago de Galápagos (Ilha Pinzón)
Localidade tipo: “Duncan Is., on the south side, from about 500 feet to near the summit” (Pilsbry, 1931)
Altitude: 164 m
Comentário: ocorrência documentada no período Holoceno para a Ilha de Santa Cruz (Chambers & Steadman, 1986)
Nome original: Gastrocopta duncana Pilsbry, 1931
Sinônimos: Gastrocopta (Gastrocopta) duncana Pilsbry, 1931
Fotos: (1-3) The Academy of Natural Sciences, Philadelphia: ANSP 152689, “South side of Isla Pinzon (Duncan Island), from 500 feet to near summit”, Pinchot South Sea Expedition, 2.7 mm

Figura: Miquel, S. E.; Herrera, H. W. (2014): (11–12) Gastrocopta munita (Reibisch, 1893); (11) ICCDRS 0036663, Seymour Norte Island; (12) ditto, detalhe da abertura; (13–15) Gastrocopta clausa (Reibisch, 1893); (13) ICCDRS 0037038, Floreana Island, Lechosos; (14) ditto, detalhe da abertura; (15) ditto, detalhe da abertura; (16) Gastrocopta duncana Pilsbry, 1931, LECTOTYPE ANSP 152689, Pinzón Island; (17) Nesopupa (Infranesopupa) galapagensis Vagvolgyi, 1974, HOLOTYPE ANSP 332451, Peak 2974, central highlands, Santiago Island
Fontes:
Descrição original: Pilsbry, H. A. (1927-1935). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 28: Geographic distribution of Pupillidae; Strobilopsidae, Valloniidae and Pleurodiscidae. pp 1-226, pls 1-31. Philadelphia, published by the Conchological Department, Academy of Natural Sciences. [pp. 1-48, figs. 1, 2, pls. 1-8, Nov. 11, 1927; pp. 49-96, pls. 9-12, Apr. 2, 1931; pp. 97-160, figs. 3-8, pls. 13-23, Jun. 14, 1934; pp. 161-226, i-xii, figs. 9-12, pls. 24-31, Nov. 7, 1935]., disponível online em https://www.biodiversitylibrary.org/page/5935964
página(s): 65
Chambers, S. M. & Steadman, D. W. (1988). Holocene terrestrial gastropod faunas from Isla Santa Cruz and Isla Floreana, Galápagos: evidence for late Holocene declines. Transactions of the San Diego Society of Natural History. 21(6): 89-110, figs. 1, 2A-L, 3., disponível online em https://www.biodiversitylibrary.org/page/4287005
página(s): 95
Miquel, S. E.; Herrera, H. W. (2014). Catalogue of terrestrial gastropods from Galápagos (except Bulimulidae and Succineidae) with description of a new species of Ambrosiella Odhner (Achatinellidae) (Mollusca: Gastropoda). Archiv für Molluskenkunde. 143(2): 107-133., disponível online em https://doi.org/10.1127/arch.moll/1869-0963/143/107-133
página(s): 114, fig. 16, map 4
Rosenberg G (2026). Malacology Collection at the Academy of Natural Sciences of Philadelphia. Academy of Natural Sciences. Occurrence dataset https://doi.org/10.15468/xp1dhx accessed via GBIF.org on 2026-07-03. https://gbif.org/occurrence/215737148
Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1307165