The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Rongwen Xi, National Institute of Biological Sciences, China. P{UAS-FLAG.Caf1-55.W}2 is a homozygous viable and fertile insertion on the second chromosome. (P{UAS-FLAG.Caf1-55.W} is similar to P{UAS-Caf1-55.W} (FBtp0071556, see FBrf0217472) and was created by the same lab, but this construct/insertion is unpublished.)