*3.3. Extraction and Isolation*

Flowers for SPME were enclosed in oven bags (Multix 25 cm × 38 cm, McPherson's Limited, Kingsgrove, NSW, Australia) and sampled for 24 h (DVB/CAR/PDMS, Supelco, Bellefonte, PA, USA) at room temperature. For solvent extractions, labella were removed and batches of 20 were extracted in each solvent (ca. 1 mL) for 48 h. The extracts were concentrated under a gentle stream of nitrogen at room temperature to a final volume of ca. 0.1 mL, stored at −20 ◦C and subsequently used for GC-MS and GC-EAD analyses. Female *A. fargeii* were extracted in dichloromethane (ca. 0.5 mL) for 48 h. The extracts were concentrated and treated as for the floral extracts.
