Small White
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Pieris rapae
Common & widespread in Britain.
During the first and second instar the head is entirely black; third instar has the clypeus yellow but the rest of the head black.
In the fourth and fifth instar, there is a dark greenish-yellow dot behind each eye but with rest of the head black.
The Larvae feeds on Crucifers & Nasturtium.
In appearance it looks like a smaller version of the Large White (Pieris brassicae).
The upperside is creamy white with black tips on the forewings.
Females also have two black spots in the center of the forewings.
Its underwings are yellowish with black speckles.
It is sometimes mistaken for a Moth due to its plain appearance.
Flight period is from April-June & July-September.