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.