Figure 2. Embryonic staging and developmental events in C. albipunctata.

Embryos are shown as lateral views: anterior is to the left, dorsal is up. Stage numbers (roughly corresponding to Bownes' stages in D. melanogaster [13] are shown in red at the bottom left corner of each panel. Times after egg activation from onset to end of each stage are shown in white at the bottom right corner in hrs:min. Arrows, asterisks, and white bar indicate morphological landmarks. See main text for a detailed description, and Figure 3 for comparative timing of stages with reference to D. melanogaster.