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Review of the genera Eulimastoma Bartsch, 1916 and Egila Dall & Bartsch, 1904 (Mollusca, Gastropoda, Pyramidellidae) from Brazil

Alexandre D. PIMENTA & Ricardo S. ABSALÃO

en Zoosystema 26 (2) - Pages 157-173

Published on 25 June 2004

The taxonomy of the species belonging to the genera Eulimastoma Bartsch, 1916 and Egila Dall & Bartsch, 1904 from Brazil is reviewed: Eulimastoma canaliculatum (C. B. Adams, 1850), Eulimastoma engonium (Bush, 1885), Eulimastoma surinamense Altena, 1975, Eulimastoma didyma (Verrill & Bush, 1900), Eulimastoma aff. didyma, Eulimastoma aff. weberi (Morrison, 1965), “Egilavirginiae Altena, 1975 and “Egilaektopa n. sp. are recorded. A lectotype is designated for E. engonium, which is considered senior synonym of Eulimastoma teres (Bush, 1885), based on general shell shape variation; previous records of E. weberi from Brazil were based on misidentifications of E. engonium. Eulimastoma surinamense, originally described as variety of E. engonium, is treated as a full species; previous records of Eulimastoma humboldti (Weisbord, 1962) from Brazil were based on misidentifications of E. didyma which shows great intraspecific variation, specially in the spiral sculpture, including a group of shells from Brazil with helicoid protoconchs, herein called E. aff. didyma. “Egilavirginiae and “Egilaektopa n. sp. are tentatively included in this genus. “Egilaektopa n. sp. is distinguished from “E.virginiae by general shell shape, suprasutural spiral cord and pattern of axial sculpture.

Keywords :

Mollusca, Gastropoda, Pyramidellidae, Eulimastoma, Egila, Brazil, new species.

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