'annulata' originates from Latin, specifically the past-participle form 'annulatus', where 'annulus' meant 'ring'.

'annulata' changed from the Latin past-participle 'annulatus' (from 'annulus') and was carried into New Latin and scientific Latin usage as the feminine form 'annulata' used in species names.

Initially it meant 'having a ring' or 'ringed' in classical Latin, and this core meaning has been preserved in modern scientific and descriptive usage as 'ringed' or 'annulate'.