Galeommatidae – Montacutinae: Montacuta semiradiata Tate, 1889 (‘semiradiated lepton’)
Synonym(s): semiradiata Tate, 1881.
Typical shell-length 2.0 mm. Lives subtidally. Native. southeastern Australia (NSW, TAS, VIC and SA); also New Zealand. In Tasmanian waters, this species is currently known only from a single record from the northwest coast.