The FlyBase report for P{PZ}hhrJ413 (FBti0002944) lists a single map location, 3R:18 ,952,916, that maps in the CG31457 gene. Based on the GenBank records, the two flanks of this line map 14.6 kb apart. The 3' flank maps at 3R: 18953010, which is in CG31457, and the 5' flank maps at 3R: 18967669, which is at the 5' end of hh.