Deletion of DNA flanking the wtsP509-19 P{lacW} insertion, probably in the proximal direction, without loss of the distal P{lacW} sequences.
Homozygotes die as pupae. Eyes are typically rough and show overproliferation.
Homozygotes exhibit embryonic or early larval lethality. wts tumour phenotype in mitotic clones: overproliferation and apical hypertrophy of epithelial cells leading to abnormal deposition of cuticle.
wtsP8 has hyperplasia phenotype, suppressible by CycA5