Heterozygotes exhibit shortened wing vein LIV and the bristle loss phenotype associated with gain of function N alleles. Lethal in combination with NAx-E2 and viable in combination with NAx-9; therefore NAx-sAR5 belongs to the "N suppressor" class of Ax alleles. Second site dominant suppressor of Nact.sev that reduces the external roughness of the eye, in addition to causing the overall eye shape to become both rounder and larger, and less refractile.