Austroargiolestes christine is a species of Australian damselfly in the family Argiolestidae, commonly known as a milky flatwing. It is endemic to mountain areas of northern New South Wales, where it inhabits streams and boggy areas.
Austroargiolestes christine is a medium-sized to large, black and pale yellow damselfly, with pruinescence on adult bodies . Like other members of the family Argiolestidae, it rests with its wings outspread.
Austroargiolestes christine appears similar to Austroargiolestes isabellae, which is found in the Sydney district.