Flies expressing B1509B1509 under the control of Scer\GAL4dpp.blk1 lack the arista, tarsi are shortened, typically with no claws, and the wing and scutellum show defects.
The tarsi are truncated in flies expressing B1509B1509 under the control of Scer\GAL4dpp.blk1 and the claws are typically missing.