P-element is deleted (position 894 to 2685 remain), and a single T to A substitution at position 33 of the P-element. Same insertion point as for whd81b9 and whd80k17. Same insertion orientation as whd80k17 but opposite to that of whd81b9 and whash-12.
Unstable, reverts to wild-type by P-element excision.