Helicina nesiotica  Dall, 1892

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: HELICINIDAE

ESPÉCIE: Helicina nesiotica Dall, 1892

Tamanho médio: ~3mm

Habitat: vive árvores e arbustos

Ocorrência: Equador, Arquipélago de Galápagos (ilhas de Floreana, Isabela, San Cristóbal e Santa Cruz)

Localidade tipo: Equador, Arquipélago de Galápagos, Ilha de San Cristobal

Altitude: 490 m

Nome original: Helicina (Idesa) nesiotica Dall, 1892

Subespécies:

(i) Helicina nesiotica nesiotica Dall, 1892

(ii) Helicina nesiotica wolfi Reibisch, 1893

Descrição original:

(Dall 1896): “Shell small, depressed, with rounded periphery; spire depressed; suture very distinct, not channelled; base moderately convex; peristome not thickened nor relected; epidermis of a bright reddish chestnut, polished, but with obvious regular incremental lines; base with a thin white callus merging into the lower lip without notch or angle; operculum smooth, whitish, angulated only at the upper extreme”

Fotos:  (1) National Museum of Natural History, Smithsonian Institution: LECTOTYPE de Helicina nesiotica nesiotica, USNM 107324, Equador, San Cristobal Island, 3.3mm

Figura: Miquel, S. E.; Herrera, H. W. (2014): (1–2) Helicina nesiotica Dall 1892; (1) LECTOTYPE USNM 107324, San Cristóbal Island; (2) ICCDRS 0036988,  Floreana, Cerro Pajas; (3-4) Helicina ochsneri Dall 1917; (3) CAS-IZ 66448.00, LECTOTYPE, Isabela Island; (4) ICCDRS 0036566, Santa Cruz Island

Fontes:

Descrição original: (como Helicina (Idesa) nesiotica Dall, 1892) Dall, W. H. (1892). On some types new to the fauna of the Galápagos Islands. The Nautilus. 5(9): 97–99., disponível online em https://www.biodiversitylibrary.org/page/42788893
página(s): 97

Descrição original: (como Helicina wolfi Reibisch, 1893) Reibisch P. (1893 [“1892”]). Die conchyliologische Fauna der Galapagos-Inseln. Sitzungsberichte und Abhandlungen der Naturwissenschaftlichen Gesellschaft Isis in Dresden. 1892(3): 13-32., disponível online em https://www.biodiversitylibrary.org/page/53776884
página(s): 29

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): Figs 1–2, map 2

Wagner, A. J. (1907-1911). Die Familie der Helicinidae. In: Küster, H. C. & Kobelt, W., Eds., Systematisches Conchylien-Cabinet von Martini und Chemnitz, Neue Folge. Ersten Bandes, achtzehnte Abtheilung, zweiter Theil. 1-72, pls 1-12 (1907), 73-160, pls 13-30 (1908), 161-248, pls 31-48 (1909), 249-328, pls 49-66 (1910), 329-391, pls 67-70 (1911). Nürnberg (Bauer & Raspe)., disponível online em https://biodiversitylibrary.org/page/52348872
página(s): 45

Miquel, S. E. & Herrera, H. W. (2019). Contribution to the knowledge of selected land gastropods of Galápagos (Ecuador). Spixiana. 42(2): 185-191.
página(s): 186, Figs 2-5

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): 94

Orrell T, Informatics and Data Science Center – Digital Stewardship (2026). NMNH Extant Specimen Records (USNM, US). Version 1.104. National Museum of Natural History, Smithsonian Institution. Occurrence dataset https://doi.org/10.15468/hnhrg3 accessed via GBIF.org on 2026-01-03. https://www.gbif.org/occurrence/1318334079

MolluscaBase: https://molluscabase.org/aphia.php?p=taxdetails&id=1306765