 One cause of a low population stated by Solem could be that ant colonies that come into the area can prey on eggs of the various species, thus wiping out a large number of snails, potentially without harming the adult snails.Some species, like the fuscozonata, have not been found recently and leads researchers to believe that they may already be extinct.While single localities had been found before Alan Solem established the genus, such as "Aaadonta angaurana" in 1936, the six species were first defined in Solem's 1976 paper.