Males expressing djScer\UAS.T:Avic\GFP-S65T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 produce motile sperm and are fertile. A few spermatids expressing djScer\UAS.T:Avic\GFP-S65T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 appear misshapen in cell size and Nebenkern formation. Expression of djScer\UAS.T:Avic\GFP-S65T under the control of Scer\GAL4Sgs4.PH has no effect on the viability of larvae or adult flies.