^Sands, D. P. A. (1979). "NEW SPECIES OFPHILIRISRÖBER (LEPIDOPTERA: LYCAENIDAE) FROM PAPUA NEW GUINEA". Australian Journal of Entomology. 18 (2): 127–133. doi:10.1111/j.1440-6055.1979.tb00824.x. ISSN1326-6756. Eliot (1973) separated two species, P. sublutea (Bethune-Baker) and P. caerulea Tite from New Guinea, placing them in a new genus Titea and showed that Philiris, Titea, Parachrysops Bethune-Baker, Hypochrysops C. and R. Felder, and Waigeum Staudinger were a closely related group of genera within the tribe Luciini
