Southeastern Gem Snail
Hawaiia alachuana (Dall, 1885)
Go to link above or Dourson (2015) for images and comparison to Minute Gem.
Characters: Heliciform, simple lip, subglobose to depressed, umbilicate to perforate, ~2-2.5 mm. The nuclear whorl is smooth and the rest of the surface is cross-hatched with fine, irregularly-spaced growth lines and minute spiral striae.
Comparisons: According to Oesch et al. (2013), this species differs from Hawaiia minuscula in these ways: (1) a wider umbilicus, (2) in basal view, the lip joins body whorl outside the midline of the whorl, and (3) in dorsal view, the body whorl is larger than in H. minuscula. See also link above or Dourson (2015) for images and comparison to Minute Gem.
Habitat: This species is found in woodlands among leaf litter.
Status: rarely identified in the state, found in two counties in the southwest, presumed extirpated by NatureServe. Dourson (2010) gives this species only as fossils in KY but extant in TN, WV, and VA. However, the two collections in Indiana are relatively recent and credible. So, who knows?