Figure 8. Comparison of wax components on the dorsal and ventral abdomen of O. albistylum, O. melania and S. darwinianum.

(A) Chromatogram of chloroform extract from the dorsal abdomen of a mature male of O. melania. (B) Chromatogram of chloroform extract from the ventral abdomen of a mature female of S. darwinianum. Asterisks indicate nonspecific peaks also detected with the solvent only. (C) Summary of wax components detected from O. albistylum, O. melania and S. darwinianum. Relative amount was judged from the abundance of total ion current. +++, high amount; ++, moderate amount; +, small amount.