Group G Key

Tigersnails (Anguispira) - The shell coloration is readily identifiabl, even injuvenile specimens which tend to hae a more angular body whorl. Two species in Indiana.

Go to the Anguispira Page.

Lancetooth snails (Haplotrema) - only one in the state. Very subglobose, almost depressed except for the retained curvaure of the upper shell. The umbilicus spires out widely from a pinhole start.

Go to the Haplotrema Page.

Button snails (Mesomphix) are large woodland snails. Their aperture, like a slanted wide-mouth frog, is an important character. The whorls, see from above spiral out in successively wider spacing.

Go to the Mesomphix Page.

Disc Snails (Discus) are small snails with a wide and deep umbilicus and prominent radial ridges.

Go to the Discus Page.

Glyph Snails (Glyphyalinia) are small to mid-sized snails with a perforate umbilicus, radial lines across the whorls, and quickly expanding whorls. The aperture opening is slightly lunate.

Go to the Glyphyalinia Page.

Glass snails (Oxychilus) are an introduced species from Europe.

Go to the Oxychilus Page.

Gloss Snails (Zonitoides) are small snails with noticeable growth wrinkles. Their whorls grow more regularly that those of the Glyph and Glass Snails.

Go to the Zonitoides Page.

Granule Snails (Guppya) are among the smallest of land snails only 1.2-1.3 mm in diameter with 3.5-4 whorls.

Go to the Guppya Page.

Gem Snails (Hawaiia) are tiny (~ 2.2 mm diameter), as is the rest of this group of heliciform snails. They have a wide, shallow umbilicus. The nuclear whorl is smooth but the rest of the surface is cross-hatched with fine, irregularly-spaced growth lines and minute spiral striae

Go to the Hawaiia Page.

Coil Snails (Lucilla) are depressed heliciform, simple lip, umbilicate, ~ 2-2.5 mm. They lack spiral threads as found in the genus Helicodiscus.

Go to the Lucilla Page.

Glass Snails (Nesovitrea) have radial lines much like Glyph Snails but have a small open umbilicus. The aperture opening is more round.

Go to the Nesovitrea Page.

Spot Snails (Punctum) are among the tiniest of and snails.

Go to the Punctum Page.

Striate Snails (Striatura) are small but ornate snails with notable ribs.

Go to the Striatura Page.

Coil Snails (Helicodiscus) are small snails (< 4 mm) with a discoidal "cinnamon roll" shape. and distinct multiple spiral ridges.

Go to the Helicodiscus Page.

Bellytooth Snails (Gastrodonta) are heliciform snails with a simple lip, a subglobose to domelike shell, perforate, 6-8 mm diamter; over 8 whorls, 2 teeth seen in aperture and others inside that can be seen through the shell..

Go to the Gastrodonta Page.

Supercoil Snails (Paravitrea) are .heliciform snails with many very tightly coiled whorls - a key trait for comparison. They also have a shallow dome-like shell, but the whorls separate them from other species with domed shells.

Go to the Paravitrea Page.