Fig. 3. Early stages of lateral growth. Panels A-D show a time-lapse series just prior to the start of outgrowth. The lateral is shown at 25 (A), 26 (B), 27 (C) and 28 (D) hours after white pupae formation (awp). Panels E-I show a time lapse series for the early stages of lateral outgrowth. The lateral is shown at 28 (E), 29.5 (F), 31 (G), 33 (H) and 35 (I) hours awp. Panel J is a cartoon representation of the early stages in lateral outgrowth. From top to bottom of panel J are drawings representing aristae at 20, 25, 28, 31 and 35 hours awp. Note, as lateral development proceeds the cells become highly elongated along the proximal distal axis and the nuclei move proximally (He and Adler, 2001). The distorted shape of the 35 hour cell is meant to represent this.