Magnovioidea, Lowry & Myers, 2013

Alves, Jessika, Lowry, James K. & Johnsson, Rodrigo, 2020, A new superfamily and family of Hadziida (Amphipoda: Senticaudata), with a description of a new genus and new species from the Brazilian continental shelf, Zootaxa 4779 (4), pp. 573-583 : 574

Magnovioidea superfam. nov.

Included families. Magnovidae fam. nov.

Diagnostic description. Body subcylindrical. Antenna 1 shorter than peduncle of antenna 2. Antenna 2 article 1 not bulbous; article 2 cone gland with row of setae. Eyes absent. Mandible molar dominating. Maxilliped outer plate longer than palp article 2, not longer than palp article 3; palp article 4 reduced. Gnathopod 1 subchelate, coxa anteroventral corner produced, acute or subacute. Gnathopod 2 subchelate, bigger than gnathopod 1. Urosomite 2 without concavity and setae. Uropod 1 peduncle with two basofacial robust setae. Uropod 3 peduncle shorter than rami, rami subequal in length and shape with fringing simple, long setae. Telson deeply cleft.

Included families. Magnovidae fam. nov.

Remarks. The only other hadziidiran families with very short antenna 1 are the Cheirocratidae and the Megaluropidae . The cheirocratid genus Casco Shoemaker, 1930 (Cheirocratidae) also has a large molar dominating the mandible.