In tsh2757R8 larvae, the T1 segment adopts a labial identity. In the abdominal segments of these larvae, denticle rows 2 and 4 are missing and row 5 is duplicated.
In the presence of construct P{HS-Scr.Z} ectopic salivary glands do not form in parasegment 3.
Revertant. Selected as: Reversion of an enhancer trap insertion within tsh (L. Mathies and M.P. Scott).