Key to common families of crustaceans in the Niagara region

5a) First 3 pairs of legs with pincers (chelate); first pair usually very large. Generally >40mm in length.
True crayfish. CAMBARIDAE




5b) First 2 pairs of legs with pincers; both pairs similarly small. Delicate species, shrimp-like,
transparent in life but whitish when placed in alcohol. Generally <40mm in length. Shrimps.
PALAEMONIDAE




Return to Couplet 4
Return to BioMAP Central