Poritia phormedon is an Indomalayan butterfly endemic to Borneo that belongs to the lycaenids, the blues family.Seki, Y.; Takanami, Y. & Otsuka, K. (1991). Butterflies of Borneo. 2 (1) Lycaenidae. Tobishima Corporation, Tokyo. Poritia phormedon was described by Hamilton Herbert Druce in 1895. Hans Fruhstorfer in Seitz ( page 1008 plate 34 fig.i) provides a description differentiating phormedon from neighbouring taxa.Seitz, A., 1912-1927. Die Indo-Australien Tagfalter. Theclinae, Poritiinae, Hesperiidae. Grossschmetterlinge Erde 9: 799-1107, pls. 138-175
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