Figure 1 shows brains of adult flies stained with anti-GFP (green) to show the mAL neurons and a projected sketch of these neurons in both males (e) and females (f).  Kimura, Ken-Ichi, et al. “Fruitless Specifies Sexually Dimorphic Neural Circuitry in the Drosophila Brain.” Nature, vol. 438, 10 Nov. 2005, pp. 229–233., doi:10.1038.