Leucosioidea
Encyclopedia
Leucosioidea is a superfamily of crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...

s containing the two families Leucosiidae
Leucosiidae
Leucosiidae is a family of crabs containing three subfamilies and a number of genera incertae sedis:Cryptocneminae Stimpson, 1907* Cryptocnemus Stimpson, 1858* Leucisca MacLeay, 1838* Lissomorpha Ward, 1933...

 and Iphiculidae.
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