Stangeia rapae
Encyclopedia
Stangeia rapae is a moth
Moth
A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Pterophoridae family. It is found in French Polynesia
French Polynesia
French Polynesia is an overseas country of the French Republic . It is made up of several groups of Polynesian islands, the most famous island being Tahiti in the Society Islands group, which is also the most populous island and the seat of the capital of the territory...

 (Rapa Island).

The wingspan
Wingspan
The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 is 13-16 mm. The head is grey with scattered white scales. The thorax is grey, but posteriorly creamy white with three longitudinal pale, clay-coloured lines. The forewing ground colour is grey, dorsally suffused pale brownish. The hindwings are greyish fuscous.

The larvae feed on Siegesbeckia orientalis. They feed in the inflorescence of their host plant. Pupation takes place on the flower stalks or very small leaves.
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