Appearance
Guinotia dentata is almost oval in shape and the teeth on its carapace are very small. It is a yellow-brown colour and its shell can grow to 65 millimetres (2.6 in) long; it is about 3/5 long as wide. The eyestalks are yellow whilst the corneas are black, but they are probably best identifiable by their large yellow claws with straight sharply pointed fingers.
The species sometimes has almost an entire dorsal surface of carapace yellow with submarginal brown.
Its shell has a cervical meandering curve which does not quite touch the edge of the shell. About 24 cubicles are well defined. The forehead is low, excavated and depressed and of uniform height. Its pereiopods are fairly average and its chelae are without prominent, swollen protuberance on outer surface near the base of the fingers.

