Recent research on the ammonite pinwheel snail Ammoniropa vigens (Legrand, 1871)

摘要

This paper provides an updated discussion of the distribution, identification, ecology and conservation of Ammoniropa vigens (Legrand, 1871), a critically endangered land snail now known to survive at four localities in the southern Hobart suburbs. Ammoniropa vigens has been found exclusively on dolerite, mainly under boulders in wet forest. Until 2020 this species was considered extremely rare and possibly very close to extinction, but results in 2020 indicate the species is at least locally fairly common within Truganini Conservation Area. The species is very cryptic, making it challenging to assess the condition of other populations or determine whether it survives at sites where only empty shells have been found.