Insertion of a Juan element into the first common exon.
capu[+]/capu3G3-1 is a suppressor of embryonic head phenotype of miraαTub67C.mGFP6
The bicaudal phenotype of embryos derived from miraαTub67C.T:Avic\GFP-m6/+ females is suppressed if the females are also heterozygous for capu3G3-1.