The review paper on the role of DM-domain genes in the development and evolution of sexual dimorphism is published in Trends in Genetics:

http://www.cell.com/trends/genetics/abstract/S0168-9525%2812%2900017-0?script=true

And check the journal cover for a nice picture of the sex comb of D. ficusphila:

http://www.cell.com/trends/genetics/issue?pii=S0168-9525%2812%29X0004-0#