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Fig. 2. Eyeshine from Nymphalini butterfly compound eyes. Epi-illumination of a dark-adapted eye showing light reflected from ommatidia viewing the incident illumination. (A) Junonia coenia The whitish appearance of the eye is likely due to light reflecting screening pigments located distally within the primary pigment cells (see Yagi and Koyama, 1963; Stavenga, 2002a) (B) Vanessa cardui. (C) Nymphalis antiopa. (D) Siproeta stelenes.