BG02315 (FBti0018555) is annotated in FlyBase as an allele of psq, but is localized in FlyBase to 2R:60903640 , which is in the luna gene. However, when I BLAST the 170 bp flank, I get a single 170/170 alignment mapping to 2R:6456555 , which is in the psq gene. There is a low complexity segment in the flank, which may be what caused the mismapping by FlyBase.