A new species of damselfish (Pomacentridae: Chrysiptera) from western New Guinea and the Togean Islands, Indonesia
Gerald R. Allen and Mark V. Erdmann
aqua, International Journal of Ichthyology, pp. 171-178, Volume 13, Issue 3-4 – 23 January 2008
Chrysiptera giti is described from nine specimens, 23.4-36.0 mm SL, from the Fak Fak Peninsula of western New Guinea (Papua Barat Province, Indonesia). Underwater photographs also reveal its presence at the Togean Islands off northeastern Sulawesi. A separate genetic study currently in progress indicates it belongs to a monophyletic clade of four species that includes C. hemicyanea (southern Sulawesi, Kei Islands, and western New Guinea), C. parasema (western Indonesia, Sabah, and the Philippines), and an undescribed species (Chrysiptera species B from northern New Guinea and north Sulawesi). The members of this group are characterised by a brilliant blue coloration with variable amounts of yellow on the posterior/ventral portion of the body. It most closely resembles C. hemicyanea. Both species have the posterior portion of the body abruptly yellow behind an oblique line extending forward from the upper caudal-fin base. The yellow coloration extends forward to the anal fin origin in C. giti, but in C. hemicyanea it also embraces the breast and lower one-fourth of the body. A key to the 10 members of the “hemicyanea complex” of Chrysiptera species is provided as well as comparative underwater photographs of the three species most closely related to C. giti.
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