Calappa calappa
 Calappa calappa also known as the smooth or red-spotted box crab is a tropical marine species of crab with an Indo-Pacific distribution and showing great variability in its patterning and colouration. First described as Cancer calappa by Linnaeus in 1758 from a specimen originating from Ambon Island and later in 1781 as Cancer fornicatus by Fabricius it was finally placed in the genus Calappa by Lancelot Alexander Borradaile in 1903.