Floridobia winkleyi (Pilsbry, 1912)

Floridobia winkleyi (Pilsbry, 1912)

Digital image by Joel Wooster (about 4 mm.)

Collected on Sept. 16, 1956 by Christopher M. Packard, Curator of the erstwhile Maine Institute of Natural Science, Portland. When the species was named by Pilsbry, it was placed in the genus Amnicola. Frank Collins Baker (1926) created the genus Marstonia and transferred A. winkleyi into it. Fifty-nine years later it was assigned to the genus Cincinnatia Pilsbry, 1891 based on extensive anatomic study by Davis and Mazurkiewicz (1985; e. g., Turgeon, Quinn, et al., 1998). Interestingly, all three generic assignments were concocted within the walls of the Academy of Natural Sciences, Philadelphia! It remained in Cincinnatia until 2002, when Thompson and Hershler introduced the genus Floridobia  [Type (OD) Amnicola floridana Frauenfeld, 1863] and transferred Amnicola winkleyi Pilsbry, 1912 into it from Cincinnatia.

Baker, F. C., 1926. Nomenclatorial notes on American fresh water mollusks. Transactions of the Wisconsin Academy of Sciences, Arts and Letters 22: 193-205.
Davis, G. M. and M. Mazurkiewicz, 1985. Systematics of Cincinnatia winkleyi (Gastropoda: Hydrobiidae) Proc. Acad. Nat. Sci. Phila. 137: 28-47.
Pilsbry, H. A., 1912. A new species of Amnicola. The Nautilus 26(1): 1, pl. 1, figs. 6,10. May.
Thompson, F. G. and R. Hershler, 2002. Two genera of North American freshwater snails: Marstonia Baker, 1926 resurrected to generic status, and Floridobia, new genus (Prosobranchia, Hydrobiidae, Nymphophilinae).  The Veliger 45:  269-271.
Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams, 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks, 2nd edition. American Fisheries Society, Special Publication 26, Bethesda, Maryland. ix + pp. 1-509 + 16 pls. (unpaginated).