Fig. 1.

Partial total ion chromatograms (TIC) of a) an un-fractionated O. surinamensis crude larval extract, b) an un-fractionated T. confusum crude larval extract (representative for all three Tribolium species as the CHC profiles were similar in their composition with respect to the presence of n-alkanes and methyl alkanes) and c) the fraction of methyl alkanes of fractionated T. confusum crude larval extract. Numbers above peaks represent the CHCs listed in Table 2 and Table S5. The n-alkanes (n-C25 – n-C31) detected in the extracts of T. confusum and O. surinamensis are highlighted in bold. Crossed-out compounds are contaminations