There was an error published in Development138, 755-765.

On p. 756, the actin:GAL4 transgenic strain was erroneously attributed to Scheer and Campos-Ortega (1999). This line [which now appears on ZFIN with designation Tg(actc1b:GAL4)i269] should have been attributed to Sudipto Roy and Franco di Giovine who generated it in the laboratory of Philip W. Ingham.

The authors apologise to readers for this mistake.