MolluscaBase taxon details
original description
(of Polygyra richardsoni E. von Martens, 1892) Martens, E. von. (1890-1901). Biologia Centrali-Americana. Land and freshwater Mollusca. London: Francis & Taylor, xxviii + 706 pp., 44 pls. [1890: pp. 1-40, pl. 1; 1891: pp. 41-96, pls. 2-5; 1892: pp. 97-176, pls. 6-9; 1893: pp. 177-248, pls. 10-12; 1894: pls. 13-15; 1897: pp. 249-288, pl. 16; 1898: pp. 289-368, pls. 17-20; 1899: pp. 369-472, pls. 21-28; 1900: pp. 473-608, pls. 29-41; 1901: pp. 609-706 + xxviii, pls. 42-44]. <em>Biologia Centrali-Americana.</em> 9: 473-608, plates 28-44., available online at https://biodiversitylibrary.org/page/573268
page(s): 168, pl. 7, figs. 9-9a-c [details]
original description
(of Polygyra richardsoni var. lingualis Pilsbry, 1899) Pilsbry, H. A. (1899). <i>Polygyra richardsoni</i> var. <i>lingualis</i> n. var. <em>The Nautilus.</em> 12(12): 144., available online at https://www.biodiversitylibrary.org/page/1746771 [details]
basis of record
Thompson, F. G. (2011). An annotated checklist and bibliography of the land and freshwater snails of México and Central America. <em>Florida Museum of Natural History Bulletin.</em> 50(1): 1-299. [details] Available for editors [request]
additional source
Emberton, K. C. (1995). When shells do not tell: 145 million years of evolution in North America's polygyrid land snails, with a revision and conservation priorities. <em>Malacologia.</em> 37(1): 69-110. Ann Arbor., available online at https://www.biodiversitylibrary.org/page/13113494
page(s): 90 [details]