The Dajidae are a family of marine isopodcrustaceans in the suborder Cymothoida. The original description was made by Giard and Bonnier in 1887. Members of this family are ectoparasites of krill. They resemble a fleshy growth on the krill's back, and make the host look as if it is wearing a rucksack. These genera are included in the family Dajidae:
^ abChris Boyko & Marilyn Schotte (2011). "Dajidae". In M. Schotte, C. B. Boyko, N. L. Bruce, G. C. B. Poore, S. Taiti & G. D. F. Wilson. World Marine, Freshwater and Terrestrial Isopod Crustaceans database. World Register of Marine Species. Retrieved January 31, 2012.
^Alfred Giard & Jules Bonnier (1887). "Contributions a l'etude des bopyriens". Travaux de l'Institut Zoologique de Lille et du Laboratoire Marine de Wimereux5: 1–272.