Homozygotes show a modest reduction in wing length and a mildly rough eye. In addition, homozygotes show ectopic wing veins, most frequently adjacent to L2 but sometimes connected or adjacent to the posterior crossvein or in the posterior cell. Ommatidial array is disrupted, many ommatidia are abnormally shaped. Eyes show interommatidial bristle defects. Some are missing, some are duplicated and some appear at additional vertices. 51% of ommatidia contain extra inner photoreceptors. A small fraction of ommatidia have one or more extra (2%) or missing (10%) outer photoreceptors. The majority of supernumerary photoreceptors show an R7 identity.
Mutant eye and wing phenotype.