Taxonomical study on a sample of land and freshwater snails from caves in central Brazil, with description of a new species

Abstract

A sample of land and freshwater snails, mainly pulmonates, was recently collected in caves in Goiás and Bahia states, Brazil. Twenty-one species were found in the material. The following species are reported for the first time for Goiás state: Cecilioides consobrina (Ferussaciidae), Dysopeas muibum and Stenogyra octogyra (Subulinidae), Entodina jekylli and Prohappia besckei (Scolodontidae; also reported for the first time for Bahia state), Pupisoma dioscoricola (Valloniidae). A new species from Goiás is described herein: Gastrocopta sharae sp. n. (Gastrocoptidae). The new records and species addressed here constitute important findings, helping to fill distributional gaps and improving the knowledge of the local molluscan fauna, an essential step for future conservation efforts.

Taxonomic study on a collection of terrestrial mollusks from the region of Santa Maria, Rio Grande do Sul state, Brazil

“…3U-V) Helix discoricola Adams, 1845: 16. Pupisoma dioscoricola: Pilsbry, 1920-1921Fernandez & Castellanos, 1973: 270;Quintana, 1982: 73;Cuezzo & Drahg, 1995: 188;Salgado & Coelho 2003: 153;Rumi et al, 2010Rumi et al, : 2988Agudo-Padrón, 2014: 18;Salvador et al, 2017Salvador et al, : 139, fig. 12, 2018a fig.…”

Terrestrial Gastropoda from the caves of Presidente Olegário, southeastern Brazil

“…Moreover, a curiously high number (four) of helicinids species was found in the material, including living specimens in the aphotic zones of the caves (Table 2). Our previous studies on cavern snails have always been poor on helicinid specimens (e.g., Salvador et al , 2017. Neotropical helicinids are typically considered arboreal species in the literature (e.g., Richling 2004), but here it can be seen that they might inhabit other habitats as well.…”

“…Those efforts are leading to an increase in the amount of information on cave-dwelling mollusks (e.g. ; Simone 2012Simone , 2013Salvador et al , 2017Simone et al 2020). This increase in studies is very welcome, both from the perspectives of mollusk taxonomy (Salvador 2019b) and of environmental protection, given that cave ecosystems are usually fragile but harbor a reasonable number of endemic species (Trajano 2000;Gallão & Bichuette 2012;Weigand 2013).…”

Type specimens of the South American terrestrial gastropods described by Henry Suter

“…Happia vitrina (Wagner, 1827), syntype of Streptaxis tumescens Suter, 1900, MNZ M.205839; H = 5.4 mm, D = 9.6 mm. of the anguloparietal lamella (see Salvador et al 2017 for a comparison), being more similar to other Central American and northern South American forms of Immersidens (tHomPSon & lóPez 1996).…”