Hirtudiscus excisa (Reeve, 1854)

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: SCOLODONTINAE

ESPÉCIE: Hirtudiscus excisa (Reeve, 1854)

Tamanho médio: 3.9 mm

Distribuição: Colômbia (Cundimarca)

Localidade tipo: “Santa Ana, New Granada”

Nome original: Helix excisa Reeve, 1854

Sinônimos: Drepanostomella excisa (Reeve, 1854)

Redescrição:

“Shell nearly discoid; spire slightly elevated; with 3.75 whorls; protoconch 1.5 whorls, with distinct spiral striae; teleoconch with dense growth-striae carrying damaged periostracal hairs of up to 0.05 mm; body whorl rounded; aperture narrow near the suture, widening near the base (saccate); peristome sharp, neither expanded nor thickened; with an incision in the parietal angle of the aperture near the suture; suture deeply impressed; umbilicus wide, occupying about 40% of shell width”

Fotos: (1-3) Natural History Museum (London): SYNTYPE de Hirtudiscus excisa, NHMUK 20130191, “New Granada”, leg. Hugh Cuming, crédito imagens: Jonathan Ablett

Fontes:

Descrição original: (como Helix excisa Reeve, 1854) Reeve, L. A. (1851-1854). Monograph of the genus Helix. In: Conchologia iconica, or, illustrations of the shells of molluscous animals, vol. 7, pls. 1-210 and unpaginated text. L. Reeve & Co., London, disponível online em https://biodiversitylibrary.org/page/11120877
página(s): pl. 182, species 1260

nova combinação: Roosen, M. T. (2023). Helix excisa L. Pfeiffer, 1855 is a species of Hirtudiscus Hylton Scott, 1973 (Gastropoda: Scolodontidae). Folia Malacologica. 31(2): 107–111., disponível online em https://www.foliamalacologica.com/-Helix-excisa-L-Pfeiffer-1855-is-a-species-of-Hirtudiscus-Hylton-Scott-1973-Gastropoda,166468,0,2.html

Roosen, M. T. & Breure, A. S. H. (2024). Revision of the genera of Scolodontidae, part 1: disentangling Happia Bourguignat, 1890 from Austroselenites Kobelt, 1905, Drepanostomella Bourguignat, 1890, Hirtudiscus Hylton Scott, 1973, Luteostriatella gen. nov., and Systrophiella H.B. Baker, 1925. Journal of Conchology. 45(1): 91-110., disponível online em https://doi.org/10.61733/jconch/4511
página(s): 98

Natural History Museum (2025). Natural History Museum (London) Collection Specimens. Occurrence dataset https://doi.org/10.5519/qd.cv5d8yso accessed via GBIF.org on 2026-01-06. https://www.gbif.org/occurrence/1056105029

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1666867