Fourth, the d-scale socket density is much lower than the a-scale socket density. Third, the socket on the wing surface into which the pedicel is inserted is much smaller for d-scales than a-scales. Second, the d-scale pedicel, which is the slender base of the scale, is tapered that of the a-scale is columnar.
First, d-scales are much larger than a-scales. Although a-scales are morphologically common lepidopteran scales, d-scales have four distinctive features. This study showed that d-scale detachment only occurs through fluttering and that d-scales are obviously morphologically different from a-scales. To investigate the scale detachment mechanism, we analyzed the scale detachment process using video photography and examined the morphology of both d- and a-scales using optical and scanning electron microscopy. Even after this programmed detachment of scales (d-scales), small regions along the wing margin and vein still have scales attached (a-scales). The insect has a rather wide distribution and lives primarily in areas of India, Japan, Africa, Sri Lanka, Southeast Asia, Australia, Madagascar, and Seychelles. It is also a beautiful cross between a cicada, a moth, and a glass winged butterfly. However, in the pellucid hawk moth, Cephonodes hylas, numerous scales detach from a large region of the wing at initial take-off after eclosion consequently, a large transparent region without scales appears in the wing. The Pellucid Hawk Moth, Cephonodes hylas, or Coffee clearwing, is a moderately large species of moth. No scales of most lepidopterans (butterflies and moths) detach from the wings through fluttering.