Revista de Biología Tropical ISSN: 0034-7744 [email protected] Universidad de Costa Rica Costa Rica

Barbosa dos Santos, Sonia Estado atual do conhecimento dos ancilídeos na América do Sul (: : : Basommatophora) Revista de Biología Tropical, vol. 51, núm. 3, 2003, pp. 191-223 Universidad de Costa Rica San Pedro de Montes de Oca, Costa Rica

Available in: http://www.redalyc.org/articulo.oa?id=44911879011

Abstract Ancylids are widespreaded pateliforms basommatophorans in lentic and lotic continental freshwater habitats. This paper shows a list of South American based on literature revision and personal observations about systematic and morphology as well as some morphological, biological, ecological and paleontological data. Seven genera and at least thirteen good species are found: Anisancylus dutrae (Santos, 1994); Anisancylus obliquus (Broderip & Sowerby, 1832); Burnupia ingae Lanzer, 1991; Burnupia sp.; Ferrissia gentilis Lanzer, 1991; Ferrissia sp.; Gundlachia bakeri Pilsbry, 1913; Gundlachia radiata (Guilding, 1828); Gundlachia ticaga (Marcus & Marcus, 1962); Hebetancylus moricandi (d¿Orbigny, 1837); Laevapex sp.; (d´Orbigny, 1835) and Uncancylus crequii (Bavay, 1904). Gundlachia leucaspis (Ancey, 1901); Gundlachia lutzi Walker, 1925; Gundlachia saulcyana (Bourguignat, 1853); Hebetancylus philippianus (Biese, 1948); Laevapex vazi Santos, 1989; Uncancylus foncki (Philippi, 1866) and Uncancylus patagonicus (Biese, 1948) need to be revised. Anatomical data show that SouthAmericanancylids are not closed related to Ancylus fluviatilis Müller, 1774. It is necessary to improve the knowledgement specially about morphology, biology, geographical distribution and genetics in order to assess the true systematic position ofthe called neotropical genera (Anisancylus Pilsbry, 1924; Gundlachia Pfeiffer, 1849; Hebetancylus Pilsbry, 1913 and Uncancylus Pilsbry, 1913) and also Burnupia Walker, 1912 and Ferrissia Walker, 1903. Methodological procedures are presented.

Keywords Ancylids, morphology, check list, distribution, South America.

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