Abstract
The effect of the sexually dimorphic face color as a visual stimulus during courtship was tested by painting male faces of laboratory-reared Ceratitis capitata. Experimental males were less successful copulating, due to their lower courtship activity. However, female responses in all the courtship steps were similar to both experimental and control males. Dimorphic face color may have lost relevance in sexual selection by the females of this species during courtship. Examination by scanning electron microscopy and a light stereoscope suggest that this sexually dimorphic character is caused by differences in cuticle color between males and females and is not related to structural differences or microtrichia density of the male face.
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