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Journal Article

Glandular Pyrazine Emission by a Tropical Katydid: An Example of Chemical Aposematism? (Orthoptera: Tettigoniidae: Copiphorinae: Vestria Stål)

David A. Nickle, James L. Castner, Scott R. Smedley, Athula B. Attygalle, Jerrold Meinwald and Thomas Eisner
Journal of Orthoptera Research
No. 5 (Aug., 1996), pp. 221-223
Published by: Orthopterists' Society
DOI: 10.2307/3503597
Stable URL: http://www.jstor.org/stable/3503597
Page Count: 3
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Glandular Pyrazine Emission by a Tropical Katydid: An Example of Chemical Aposematism? (Orthoptera: Tettigoniidae: Copiphorinae: Vestria Stål)
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Abstract

The Peruvian Crayola® katydid, Vestria undescribed species, responds to disturbance by everting a small odoriferous gland from near the tip of its abdomen. Three pyrazines have been characterized from the secretion of this gland, which is present in both sexes of this insect. It is argued that the gland serves for dissemination of a warning odor. A second undescribed species of Vestria, sympatric with the Crayola katydid, also produces pyrazines.

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