Quadrimaera Krapp-Schickel & Ruffo, 2000

Senna, André R. & Serejo, Cristiana S., 2007, Two new species of Quadrimaera (Crustacea: Amphipoda: Melitidae) from Atol das Rocas, Brazil, Zootaxa 1593, pp. 55-67 : 56

Genus Quadrimaera Krapp-Schickel & Ruffo, 2000

Type species: Gammarus quadrimanus Dana, 1853

Genus diagnosis. Article 1 of mandibular palp never produced into acute distal tooth; article 3 narrow, usually equally long or longer than article 2. Dactylus of gnathopod 2 with one single seta on outer margin, inner margin often with humps, teeth or excavations; palmar corner of gnathopod 2 equal to or shorter than 90°, sometimes produced into a stout process; dactyli of pereopods with a second tip on outer margin, thus seemingly bifid (modified from Krapp-Schickel & Ruffo, 2000).

Species: Quadrimaera ariadne ( Krapp, Marti & Ruffo, 1996) ; Q. ariel ( Ruffo, Krapp & Gable, 2000) ; Q. aurora ( Krapp, Marti & Ruffo, 1996) ; Q. caliban ( Ruffo, Krapp & Gable, 2000) ; Q. ceres ( Ruffo, Krapp & Gable, 2000) ; Q. chaelata sp. nov.; Q. chinarra (Barnard, 1979) ; Q. cristianae Krapp-Schickel & Ruffo, 2000 ; Q. inaequipes (Costa, 1851) ; Q. incerta (Chilton, 1883) ; Q. kaiulani (Barnard, 1970) ; Q. massavensis (Kossmann, 1880) ; Q. miranda ( Ruffo, Krapp & Gable, 2000) ; Q. pacifica (Schellenberg, 1938) ; Q. pieteri Krapp- Schickel & Ruffo, 2000; Q. quadrimana (Dana, 1853) ; Q. reishi (Barnard, 1979) ; Q. rocasensis sp. nov.; Q. sarae Krapp-Schickel & Ruffo, 2000 ; Q. schellenbergi (Ruffo, 1938) ; Q. serrata (Schellenberg, 1938) ; Q. vigota (Barnard, 1969) ; Q. viridis (Haswell, 1879) .