Figure 1.

Stage-specific melanic mutants of Bicyclus anynana. (a) Lateral view of the mid-last instar “WT” and Choc larvae. Typical color of WT head capsule and body integument is light brown, whereas that of the Choc mutants is dark reddish brown (pupal and adult coloration are not affected). The effect of the Choc allele is visible but much weaker in earlier larval instars; the dark coloration in these disappears almost completely by the end of each instar, just before each molt. (b) Ventral view of WT and melanine (mln) adult females. Typical adult coloration is brown with light bands and concentric rings of white, black and yellow running in the anterior-posterior direction along the wings. Homozygous adults for the mln allele are overall dark, almost black (larval and pupal coloration are not affected).