SOUTH AUSTRALIAN BUTTERFLIES
Polyura sempronius (Fabricius) (Tailed Emperor)
Newly laid egg
Fertile egg, two days old, that has acquired the purplish-brown apical ring
Egg, three days old showing the apical depression starting to form
Egg, four days old on leaf of Robinia foodplant
Photography by R. Fisher
Egg showing the developing mandibles (mouth parts) of the larva inside the egg
Egg, six days old, and eight hours before hatching.
The mandibles of the larva are on the right hand side
Egg, six days old, and two hours before hatching.
The mandibles of the larva are now at the top of the egg as it slowly eats open the egg.
A small opening has already been formed by the 'egg tooth',
seen in the middle of the reflective white patch near the top of the egg
Photography by R. Grund except where noted