Miradiscops variolatus H. B. Baker, 1925

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: SCOLODONTIDAE

ESPÉCIE: Miradiscops variolatus H. B. Baker, 1925

Tamanho médio: 1.3 mm

Distribuição: Venezuela

Localidade tipo: Venezuela, Quebrada La Fría, “in abandoned cacao plantation”

Nome original: Miradiscops variolatus H. B. Baker, 1925

Comentários: Baker (1925) observou que os animais são ovovivíparos

Redescrição:

(Roosen et al. 2025): “Shell minute, discoid, c. 4 whorls; translucent, light brown. Protoconch (1¼ whorls) sculptured with multiple closely spaced spiral rows of microscopic punctae; c. 22 close to teleoconch transition. Transition to teleoconch marked by a gradual appearance of axial sculpture. Teleoconch sculptured with spiral rows of microscopic pits (that continue from protoconch) and well-marked rib-like axial striae, the latter closely packed together (space between ribs equal to one- or two-times rib width). Spire lightly raised, step-like. Suture well marked. Whorl profile convex, rounded. Umbilicus deep, wide (c. 30% shell width).

Aperture D-shaped. Peristome simple. Radula (described by Baker 1925: 34): “exceedingly minute, long and narrow, with chevron-shaped transverse rows. Formula: 10-0-10.”

Fotos: Roosen et al. 2025: HOLOTYPE UMMZ-MOL-121104 (W=1.3 mm)

Roosen et al. 2025: (A) Miradiscops variolatus H. B. Baker, 1925, HOLOTYPE UMMZ-MOL-121104 (W=1.3 mm); (B) Miradiscops brasiliensis (Thiele, 1927), SYNTYPE ZMB102999 (W= 1.8 mm); (C) Miradiscops lunti (E. A. Smith, 1898), potencial SYNTYPE NHMUK 1898.12.5.32 (W=1.5 mm)

Fontes:

Descrição original: (como Miradiscops variolata H. B. Baker, 1925) Baker, H. B. (1925). The Mollusca collected by the University of Michigan-Williamson Expedition in Venezuela, Part III: Pupillidae to Oleacinidae. Occasional Papers of the Museum of Zoology, University of Michigan. 156: 1-56, pls. 6-11., disponível online em https://deepblue.lib.umich.edu/bitstream/handle/2027.42/56595/OP156.pdf?sequence=1&isAllowed=y
página(s): 34, pl. 8, figs. 44-45; pl. 9, fig. 51

Roosen, Marijn & Salvador, Rodrigo & Breure, Abraham. (2025). Revision of the genera of Scolodontidae, part 4: Miradiscops H.B. Baker, 1925 and Mayadiscops gen. nov. Journal of Conchology 45 (4), 2025, disponível online em: https://conchsoc.org/jconch-45-4

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1671320