Terrestrial Gastropoda from the caves of Presidente Olegário, southeastern Brazil

Abstract

Samples of terrestrial gastropods were collected year-round in seven caves in Presidente Olegário municipality, Minas Gerais state, southeastern Brazil, during several expeditions from 2012 to 2014. Twenty-four taxa (plus a single freshwater species), mainly stylommatophorans, were found in the material. The following species are reported for the first time for Minas Gerais state: Alcadia iheringi Wagner, 1910 and Helicina sordida King, 1831 (Helicinidae); Cecilioides consobrina (d’Orbigny, 1841) (Ferussaciidae); Entodina gionensis Morretes, 1940 and Scolodonta interrupta (Suter, 1900) (Scolodontidae); Megalobulimus sanctipauli (Ihering & Pilsbry, 1900) (Strophocheilidae); Drymaeus coarctatus (Pfeiffer, 1845) (Bulimulidae); Habroconus semenlini (Moricand, 1846) (Euconulidae); and Solaropsis aff. rosaria (Pfeiffer, 1849) (Solaropsidae). Furthermore, the species Drymaeus iracema (Simone, 2015) and Drymaeus terreus (Simone, 2015) are synonymized with Drymaeus coarctatus (L. Pfeiffer, 1845).

Taxonomic study on a collection of terrestrial and freshwater gastropods from caves in Bahia state, Brazil, with the description of a new species

“…By contrast, the family Helicinidae of operculated land snails is usually uncommon among cave snail checklists, with only a few species reported from subterranean environments (SalvadoR et al , 2017(SalvadoR et al , 2021. Nevertheless, the only new species of terrestrial snail described here, Helicina marfisae sp.…”

A new species of Solaropsis Beck, 1837 (Gastropoda: Stylommatophora: Solaropsidae) from the Brazilian Amazon

“…A further similar species is S. aff. rosaria (L. Pfeiffer, 1850), reported from Tocantins and Minas Gerais states (sAlvAdor et al 2015(sAlvAdor et al , 2021. However, S. penthesileae sp.…”

A new species of Megalobulimus from the early Holocene of southeastern Brazil (Gastropoda: Strophocheilidae)

“…Calcium is di-rectly related to the abundance, development, reproduction and survival of the large African Achatinidae snails (e.g., iReland 1991, egonmwan 2008) and a similar situation is expected with Megalobulimus. Some species seem to have an affinity for limestone soils and rocks, occurring in greater numbers close to sheltered areas such as caves (vieiRa & Simone 1990, SalvadoR et al 2021. The depositional environment of such cases also favors the preservation of the shells as subfossils.…”