Syncassidina aestuaria
- kingdom: Animalia
- phylum: Arthropoda
- class: Malacostraca
- order: Isopoda
- family: Sphaeromatidae
- genus: Syncassidina
- species: Syncassidina aestuaria
Ballina- East Ballina
New South Wales
Australia
Syncassidina aestuaria Ballina East Ballina