Up to eight species of Button snails may be found in Indiana. The actual status and how many there are is undetermined. As with other genera, a thorough re-examination of museum specimens and wide collections of fresh specimens is needed. Dourson (2010) and Hotopp et al. (2013) provide more information.
The eight species all have some museum records and are (in order of number of counties and with presence/absence as a state species in NatureServe noted):
Mesomphix cupreus, Copper Button Snail (29 counties, state-listed in NS)
Mesomphix friabilis, Brittle Button Snail (13 counties, state-listed in NS)
Mesomphix vulgatus, Common Button Snail (11 counties, state-listed in NS)
Mesomphix capnodes, Dusky Button Snail (8 counties, not state-listed in NS)
Mesomphix perlaevis, Smooth Button Snail (7 counties, not state-listed in NS)
Mesomphix inornatus, Plain Button Snail (5 counties, state listedNS
Mesomphix globosus, Globose Button Snail (2 counties, state-listed in NS)
Mesomphix anurus, Frog Button (1 county, not state-listed in NS)
In general, these species tend to prefer wooded hillsides associated with leaf litter and other organic matter, but also may be found in associated areas.