A revision of the Cymadusa filosa complex (Crustacea: Amphipoda: Corophioidea: Ampithoidae) Author Peart, R. A. text Journal of Natural History 2004 2004-02-10 38 3 301 336 http://www.tandfonline.com/doi/abs/10.1080/0022293021000055441 journal article 10.1080/0022293021000055441 1464-5262 4653568 Cymadusa Savigny, 1816 Cymadusa Savigny, 1816: 51 , 109; Barnard and Karaman, 1991: 104 ; Poore and Lowry, 1997: 900 . Grubia Czerniavsky, 1868: 103 . Acanthogrubia Stout, 1912: 143 . Paradusa Ruffo, 1969: 63 ; Barnard and Karaman, 1991: 106 . Type species. Cymadusa filosa Savigny, 1816 , monotypy. Diagnosis. Antenna 1 longer than antenna 2. Antenna 1 with a one- to twoarticulate accessory flagellum. Mandibular palp three-articulate. Lower lip outer lobe notched. Gnathopod 1 smaller or subequal to gnathopod 2. Gnathopod 1 propodal palm acute. Pereopods 3 and 4 with narrow basis and narrow nonglandular merus. Uropod 1 with distoventral spur long and acute. Uropod 3 rami short and broad. Uropod 3 outer ramus with two recurved robust setae.