Wing Scale Orientation Alters Reflection Directions in the Green Hairstreak Chrysozephyrus smaragdinus (Lycaenidae; Lepidoptera)

Michio Imafuku, Naomichi Ogihara

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

There have been only a few reports on the directional reflection of light by butterfly wings. Here, we systematically investigated this phenomenon in a lycaenid butterfly, Chrysozephyrus smaragdinus,in which males have bright green wings based on structural coloration. We used a device that measures intensities of light in hemispherical space by vertical shifting of a sensor and horizontal rotation of the stage carrying the wing, which is illuminated from the top, to determine the direction of light reflected by the fore-and hindwings. The orientation and curvature of wing scales were also examined microscopically. The forewing of this species reflected light shone from the top largely forward, whereas the hindwing reflected it slightly forward. This difference was attributed to the tilt angles of the wing scales. Light reflection by the forewing was relatively weak, and widely scattered, whereas that by the hindwing was rather concentrated, resulting in higher reflectance. This difference was attributed to difference in the curvature of the wing scales on the two wings.

Original languageEnglish
Pages (from-to)616-622
Number of pages7
JournalZoological Science
Volume33
Issue number6
DOIs
Publication statusPublished - 2016 Dec 1

Keywords

  • Chrysozephyrus
  • Directional reflection
  • Lepidoptera
  • Lycaenidae
  • orientation
  • wing scale

ASJC Scopus subject areas

  • Animal Science and Zoology

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