MolluscaBase name details
original description
(of Biomphalaria occidentalis Paraense, 1981) Paraense, W. L. (1981). Biomphalaria occidentalis sp.n. from South America (Mollusca basommatophora pulmonata). <em>Memórias do Instituto Oswaldo Cruz.</em> 76(2): 199-211., available online at http://www.scielo.br/pdf/mioc/v76n2/vol76(f2)_092-104.pdf [details]
basis of record
Spatz, L.; Vidigal, T. H. D. A.; Caldeira, R. L.; Neto, E. D.; Cappa, S. M. G.; Carvalho, O. S. (1999). Study of Biomphalaria tenagophila tenagophila, B. t. guaibensis and B. occidentalis by Polymerase Chain Reaction Amplification and Restriction Enzyme Digestion of the Ribosomal RNA Intergenic Spacer Regions. <em>Journal of Molluscan Studies.</em> 65(2): 143-149., available online at https://doi.org/10.1093/mollus/65.2.143 [details]