“…Lures used were comprised by compounds found to be attractive by Unelius et al (), which were purchased (all of ≥98% purity) from Aldrich/SAFC. These compounds were (a) putative wasp pheromone heptyl butanoate, CAS nr: 5870‐93‐9 (Buteler et al, ; Unelius et al, ); (b) from fermented brown sugar: 3‐methylbut‐1‐yl acetate, CAS nr: 123‐92‐2, 2‐methyl‐1‐butanol, CAS nr: 137‐32‐6 (Unelius et al, ); (c) from beech forest honeydew (Brown, El‐Sayed, Unelius, Beggs, & Suckling, ): methyl phenylacetate, CAS nr: 101‐41‐7; (d) from green‐lipped mussel: 1‐octen‐3‐ol, CAS nr: 3391‐86‐4, 3‐octanone, CAS Number: 106‐68‐3 (Unelius et al, ); compounds with stereocenters were tested as racemates.…”