Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

On the Elytral Microsculpture of Carabid Beetles (Col. Carabidae)

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Insect Systematics & Evolution

There is a great amount of variation in microsculpture on the surface of Carabid Beetles. On the elytra, subject of this study, microsculpture may be entirely lacking, but as a rule consists of engraved microlines, either forming a network of meshes from isodiametric to more or less stretched, or of very dense transverse lines, a system of diffraction gratings causing iridescence. Since this phenomenon appears in many non-related genera and groups, for instance within the large genus Bembidion, it is concluded that diffraction grating is clearly polyphyletic in the Carabid family. An investigation of Baltic Amber Carabidae showed that the different types of microsculpture were developed already in early Oligocene and gave no support to the hypothesis-plausible in itself and confirmed in genus Bembidion-that diffraction grating is a derivative condition. The biological importance of iridescence is doubtful. In certain situations it may have a repulsive effect on predators, for instance birds. But, since it occurs also in certain cavernicolous species never exposed to light, this cannot be the only valid explanation. Other possible effects of iridescence, such as protection against over-heating or ultraviolet light, were doubted. It seems that no generally valid selective value of diffraction grating can be applied and that, in many cases, it may be preserved only as "not harmful".

Affiliations: 1: Zoological Institute of the University, 223 62 Lund, Sweden


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Insect Systematics & Evolution — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation