Figure 5. Identification and chemical synthesis of surface wax of O. albistylum.

(A) Chromatogram of hexane extract from the dorsal abdomen of a mature male. (B) Chromatogram of chloroform extract from the dorsal abdomen of a mature male. (C) Chromatogram of chloroform extract from the ventral abdomen of a mature male. (D) Chromatogram of chloroform extract from the dorsal abdomen of a mature female. (E) Chromatogram of chloroform extract from the ventral abdomen of a mature female. (F) Chromatogram of chemically synthesized 2-pentacosanone. Asterisks indicate nonspecific peaks that are also detected with the solvent only. The Y-axis shows the abundance of total ion current.

Figure 5—figure supplement 1. Mass spectra and extracted ion chromatogram of dragonfly wax.

(A, B, D–H) and of synthetic 2-pentacosanone (C).