Moth Eye Compound Structure — Hyles lineata

Description

The compound eye of the Lepidoptera is equipped with an anti-reflective nanostructure on the surface of each ommatidium lens — a nanoscale array of cones approximately 200nm in diameter that reduces surface reflection from approximately 4% to less than 0.1%, giving moths exceptional low-light visual acuity. This photograph, made at 8:1 optical magnification using a reflected-light dark-field illumination configuration, resolves the ommatidia arrangement of the white-lined sphinx moth compound eye while simultaneously revealing the nanostructure of individual ommatidia surfaces as a slightly matte texture visible under the oblique illumination angle. The image reveals biological engineering operating at four distinct spatial scales — a photograph that bridges optical and scanning electron microscopy in a single conventionally optical image.