A revision of the genus Harrisoniella (Mallophaga: Philopteridae)

Four species of the genus Harrisoniella Bedford, 1929 are recognised. Two further species are placed in synonymy. These, together with their hosts are H. ferox (Giebel, 1867) (=D. irroratae Kéler, 1957 new synonymy; = H. chilensis Carriker, 1964 new synonymy) on Diomedea melanophrys melanophrys, D. m. impavida, D. irrorata, D. cauta cauta, D. c. salvini, and D. bulleri; H. densa (Kellogg, 1896) on D. albatrus and D. immutabilis; H. hopkinsi Eichler, 1952 on D. exulans exulans, D. e. chionoptera, D. epomophora epomophora, and D. e. sanfordi; H. copei Timmermann, 1969 on D. nigripes. A key and illustrations to adult males and females of the species are provided and a neotype is designated for Harrisoniella ferox(Giebel, 1867). The relationships of the host are discussed with respect to their lice; attention is drawn to the species of Diomedeidae from which no records of Harrsoniella spp. exist. A bibliography of the genus and of all species, valid and synonymised, is given.