abstract
Limnophyes pusillus Eaton was probably introduced into the sub-Antarctic from Europe at a very early date. It is firmly established on at least the Prince Edward and Kerguelen archipelagos. L. pusillus has been studied in detail on Kerguelen, and data on the life cycle and breeding biology of this species are summarised. L. pusillus is eminently preadapted to the sub-Antarctic terrestrial environment. Selective advantages include a long larval stage and parthenogenetic reproduction.