| Egg of the Common Birdwing. The eggs are laid singly by the female and are normally attached to the top or bottom surface of the Aristolochia tagala leaves. After about 4-5 days, the caterpillar hatches. |
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| This is the 1st instar of the caterpillar. Extremely small (about 6 mm long), the caterpillar first eats the eggshell and then bites through the surface of the leaf, creating a hole. It feeds both during the day and at night. |  |
