Remarks. Bruce (2009, fig. 7) showed that the Aegidae is basally divided into two major clades, one containing Aega Leach, 1815, Aegiochus Bovallius, 1885 and Aegapheles Bruce, 2009, the other containing Alitropus Milne Edwards, 1840, Rocinela Leach, 1818, Syscenus Harger, 1880 and Xenuraega Tattersall, 1909. In that analysis Xenuraega is the sister taxon to Syscenus, and these two genera are sister to Rocinela. Both genera lack a frontal lamina and have an elongate pleon that has all pleonites with free lateral margins, none being posteriorly directed.