γCopd06498/γCopKG06383 mutant males (also expressing γCopd06498 under the control of Scer\GAL4arm.PS to allow development to adulthood) show cytokinesis defects in onion-stage spermatids: spermatids containing one Nebenkern and more than one nucleus are seen.
Precise excision of the insertion reverts the mutant tracheal phenotype.