Open AccessMegalobulimus dryades, a new species from the Atlantic Forest in southeastern Brazil, and redescription of Megalobulimus gummatus (Gastropoda: Strophocheilidae)
Author(s) -
José Heitzmann Fontenelle,
Luiz Ricardo L. Simone,
Daniel C. Cavallari
Publication year - 2021
Publication title -
papéis avulsos de zoologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.358
H-Index - 26
eISSN - 1807-0205
pISSN - 0031-1049
DOI - 10.11606/1807-0205/2021.61.44
Subject(s) - gastropoda , white (mutation) , sculpture , atlantic forest , biology , geography , paleontology , archaeology , ecology , biochemistry , gene
Megalobulimus dryades sp. nov. is described from the Atlantic Forest in the Vale do Ribeira region, in the states of Paraná and São Paulo, S-SE Brazil, based on morphology. Representatives of the new species with white peristome and glossy periostracum have been misidentified as Megalobulimus gummatus (Hidalgo, 1870) since the 19th Century. The true M. gummatus is revised and redescribed, and its distribution is here restricted to Rio de Janeiro state. Externally, the new species differs from M. gummatus in having distinct protoconch color and sculpture, teleoconch sculpture marked by strong anastomosing rugosities and malleations, and lighter colored white-greyish head-foot. Internally, it presents distinct jaw and radular features, a talon, and a long convoluted penis bearing two flagella. Additional comparisons with other Brazilian congeneric species are also provided.