TitleDefensive chemicals of two species of Trachypachus Motschulski
Publication TypeJournal Article
Year of Publication2004
AuthorsAttygalle, AB, Wu, XG, Ruzicka, J, Rao, S, Garcia, S, Herath, K, Meinwald, J, Maddison, DR, Will, KW
JournalJournal of Chemical Ecology
Volume30
Pagination577-588
Type of ArticleJournal Article
ISSN0098-0331
Abstract

Analyses of pygidial gland contents of two species of a previously uninvestigated family of beetles (Trachypachidae) by Gas Chromatography-Mass Spectrometry (GC-MS) revealed that their chemistry is similar to that reported from many members of the family Carabidae. Nevertheless, the composition of defensive gland fluids of the two species Trachypachus slevini and T. gibbsii differs sufficiently to distinguish between the two species solely on the basis of their defensive chemistry. The major components of T. slevini glandular fluid are methacrylic, tiglic, and octanoic (D caprylic) acids, together with the hydrocarbon (Z)-9-pentacosene. In contrast, the glandular contents of T. gibbsii contain a rather unique mixture of polar and nonpolar compounds, the principal constituents of which are methacrylic and ethacrylic acids (=2-ethylacrylic acid), together with 2-phenylethanol, 2-phenylethyl methacrylate, 2-phenylethyl ethacrylate, and (Z)-9-pentacosene.

URL<Go to ISI>://WOS:000220053300007
DOI10.1023/b:joec.0000018630.79922.94