Fig. 6
From: Complex interplay between the microfluidic and optical properties of Hoplia sp. beetles
H. argentea (the same individual from Fig. 5A). A. Wet insect; scale bar 1 cm. B. Closer look at completely wet elytra and attached scales attaining brownish color; scale bar 50 um. C. Part of elytra immediately after applying a few droplets (each of 0.3 ul) of water with scales instantly turning greener; scale bar 1 mm. D. Individual scales of H. argentea (dry and wet). Arrows indicate the reversibility of the color change; scale bar 50 um