We’re going to change directions a bit and talk about some QTL studies of Heliconius.
Baxter, S. W., S. E. Johnston and C. D. Jiggins 2009. Butterfly speciation and the distribution of gene effect sizes fixed during adaptation. Heredity 102(1): 57-65 [doi]
Papa, R., D. D. Kapan, B. A. Counterman, K. Maldonado, D. P. Lindstrom, R. D. Reed, H. F. Nijhout, T. Hrbek and W. O. McMillan 2013. Multi-Allelic Major Effect Genes Interact with Minor Effect QTLs to Control Adaptive Color Pattern Variation in Heliconius erato. Plos One 8(3) [doi]