description Feathered Thorn Moth Overview
The Feathered Thorn Moth, Colotois pennaria, is a geometrid moth found across parts of Europe and Eurasia. It is an autumn-flying species, and adult males are distinguished by exceptionally feather-like antennae. The plumose antennae help males detect female pheromones, making the species a useful example of sexual communication and specialized moth anatomy.
help Feathered Thorn Moth FAQ
Why does the Feathered Thorn Moth have feather-like antennae?
The exceptionally plumose antennae are found on the male and help him detect female pheromones. This is why the antennae are the most distinctive feature of Colotois pennaria. [UK moth profile](https://www.ukmoths.org.uk/species/colotois-pennaria/)
When does the Feathered Thorn Moth fly?
It is an autumn-flying geometrid moth, so adults are typically encountered later in the year rather than during the main summer moth season. Its scientific name is Colotois pennaria.
Where is Colotois pennaria found?
The Feathered Thorn Moth occurs across parts of Europe and Eurasia. It is associated with habitats containing suitable deciduous vegetation rather than being restricted to one small region.
How can you tell a male Feathered Thorn Moth from a female?
The male has strongly feathered antennae, while the female’s antennae are much less conspicuous. The adults also have reddish-brown to grey-brown wings, which can make the antennae the easiest identification clue.
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