Macrophthalmus setosus

Macrophthalmus setosus is a species of sentinel crab found on the east coast of Australia, from around Queensland to Sydney.^[2] Macrophthalmus setosus is found low down on muddy river and creek banks and in exposed sea grass areas in tidal zones, at times near mangroves.^[2] Males have a tooth on the upper claw (dactyl). The carapace is around 40 mm wide, and rectangular, greater than 1.7 times wide than long.^[3] Eye stalks are long and thin.

Australian sentinel crab
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Family:	Macrophthalmidae
Genus:	Macrophthalmus
Subgenus:	Mareotis
Species:	M. setosus
Binomial name
Macrophthalmus setosus H. Milne Edwards, 1852[1]