Fig. 3From: Unique wing scale photonics of male Rajah Brooke’s birdwing butterfliesRed hairs. a Epi-illumination light micrograph of the red hairs near the abdomen (area 4 of Fig. 1b); scale bar 100 μm. b, c Scanning electron micrograph of red hairs of the area near the abdomen and collar, respectively; scale bar: 5 μm. d Scatterogram of a red hairBack to article page