een12124-sup-0001-FigureS1.docWord document707KFigure S1. (a) Typical gas chromatogram from solid-phase microextraction (SPME) of the volatiles released from a single Eucalyptus tereticornis leaf, confirming 1,8-cineole as the major terpene. This example is from a high-nutrient leaf fed upon by Uraba lugens larvae. The retention time of cineole was approximately 4.60 min. (b) Mass spectra of the cineole peak. The molecular mass of cineole is approximately 154 m/z.
een12124-sup-0002-FigureS2.docWord document302KFigure S2. Experimental set-up used for measuring Eucalyptus volatiles. A = retort stand with clamp; B = SPME holder and fibre; C = Eucalyptus tereticornis seedling in pot; D = glass chamber and foil cover to enclose a single leaf.
een12124-sup-0003-FigureS3.docWord document3009KFigure S3. (a) A model caterpillar attached to a eucalypt branch; (b) The bait which consisted of a 5-ml plastic vial with or without 2.5 ml of cineole and loosely plugged with cotton wool; (c) The model caterpillar in relation to the bait (locations indicated by yellow arrows). Photo credit: P. Low.
een12124-sup-0004-FigureS4.docWord document1623KFigure S4. Physical variation in Eucalyptus tereticornis seedlings grown under low- (L) and high (H)-nutrient conditions for 13 weeks. Photo credit: J. Schlunke.

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