Figure 5 in Jumping spider scales (Araneae: Salticidae)

Figure 5. Iridescent scales of the male chrysilline Cosmophasis umbratica. 1, Adult male from Bali, showing the two bands of green-orange (or gold) iridescent scales that cross the top of the carapace. Land et al. (2007) called these type 1 scales. 2, Model section through the multilayers of a type 1 scale, showing nanoscale photon pathways (after Land et al. 2007). This configuration was thought to produce a peak reflection at 600 nm, but this would vary according to the relative direction of illumination at any position along the length of the scale. Optical thickness of each respective layer is depicted here. These scales also reflected near-UV light (~385 nm peak), a color that, according to Li et al. (2008), also plays a role in the recognition of males by female Phintella vittata (C. L. Koch 1846). Attribution and ©: 1, normfarmerimages.