A Guide for Terrestrial Gastropod Identification - University of ...

TAXON AUTHOR
G-
RANK DISTRIBUTION
IL, MA, ME, MI, MN, NH, NY, OH, VT, WI; Canada: NF, NS, ON,
Planogyra asteriscus (E.S. Morse, 1857) G4 QC
Planogyra clappi (Pilsbry, 1898) G3G4 BC, AK, CA, ID, OR, WA
CA, CO, ID, MA, ME, MI, NM, OR, UT, WA, WY; Canada: AB, BC,
Vallonia albula Sterki, 1893 G4Q MB, NF, ON, QC
CA, DE, IA, IL, IN, KY, MA, MD, ME, MI, MN, NC, NE, NJ, NY,
Vallonia costata (Muller, 1774) G5 OH, PA, SD, VA, WI, WV; Canada: ON, QC
AK, AZ, CA, CO, IA, ID, MT, ND, NM, OR, SD, TX, UT, VT, WA,
Vallonia cyclophorella Sterki, 1892 G5 WI, WY; Canada: AB, BC, MB, ON, SK
CA, GA, IL, IN, KY, MA, MD, ME, MI, MO, NC, NJ, NY, OH, PA,
Vallonia excentrica Sterki, 1893 G5 RI, TN, VA, VT, WI, WV; Canada: AB, BC, NF, NS, ON, QC
AZ, CA, CO, IA, ID, IL, IN, KS, KY, MA, ME, MN, MO, MT, ND,
NE, NM, NY, OK, RI, SD, TX, UT, WI, WY; Canada: AB, BC, MB,
Vallonia gracilicosta Reinhardt, 1883 G5Q NF, NU, ON, QC
IA, IL, KS, KY, MI, MN, MO, NE, NM, NY, OH, OK, SD, TN, TX,
Vallonia parvula Sterki, 1893 G4 VA, WI; Canada: ON
AL, AR, IA, IL, KY, MD, MN, MO, MS, NC, ND, NE, NJ, NM, SD,
Vallonia perspectiva Sterki, 1893 G4G5 TN, TX, UT, VA, WI, WV; Canada: AB
CA, CT, DE, IA, IL, IN, KY, MA, MD, ME, MI, MN, MO, NC, NE,
NJ, NY, OH, PA, SD, TX, UT, VA, WA, WI, WV; Canada: AB, BC,
Vallonia pulchella (Muller, 1774) G5 NB, NF, NS, ON, QC
Vallonia terraenovae Gerber, 1996 G1 Canada: NF
AK, MA, ME, MI, MN, NH, RI, WI; Canada: AB, BC, NB, NF, NS,
Zoogenetes harpa (Say, 1824) G5 ON, QC
Veronicellidae
Megan E. Paustian, University of Maryland
Only one species of Veronicellidae, Leidyula floridana, is native to the U.S.
In contrast to the majority of slugs, L. floridana belongs to the order Systellommatophora
instead of Stylommatophora. L. floridana is easily distinguished from most slugs by the
presence of contractile instead of invaginable tentacles, the absence of a pneumostome, an anus
at the end of the foot (due to detorsion of the gut), and a wide mantle covering the entire dorsum.
This species is 50-70 mm long.
L. floridana occupies any habitats with sufficient shelter, including woods, roadsides, and
gardens.
L. floridana is native to southern Florida and was introduced to Louisiana. Several nonnative
Veronicellids overlap in range with L. floridana.
Information summarized from Burch (1962), Hubricht (1985).
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