Fig. 7From: Life as a fortress – structure, function, and adaptive values of morphological and chemical defense in the oribatid mite Euphthiracarus reticulatus (Actinotrichida)Gas chromatogram (a) of the oil gland secretions of Euphthiracarus reticulatus. Peak I = δ-acaridial, Peak II = β-springene (see inserted molecular structure). Electron-ionization mass spectrum of δ-acaridial (b). Interpretation of the main fragmentations (c), i.e. base ions and loss of function groups, of δ-acaridial (* denotes a McLafferty rearrangement)Back to article page