Anal Secretion of Thrips I. Identification of Perillene from Leeuwenia pasanii(Thysanoptera : Phlaeothripidae)

Abstract
Perillene was identified from the ether extract of the secretion of the thrips, Leeuwenia pasanii (Thysanoptera : Phlaeothripidae), on the basis of GLC, TLC, MS and synthesis. Four saturated hydrocarbons (dodecane, tridecane, tetradecane and pentadecane) were also identified from the extract, in which tridecane was a major component (66.5%). The contents of perillene and pentadecane were 17.7 and 12.7%, respectively. This species aggregates in a leaf-gall, and perillene may serve as an alarm pheromone in the colony. This is the first report on identification of components of secretion of thrips.

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