description Feathered Thorn Overview
The Feathered Thorn is a geometrid moth associated with the autumn flight season in Europe. Adult males have strongly plumose antennae, with many fine branches that increase the surface area available for detecting chemical signals released by females. This antenna structure is a common example of sexual dimorphism in moths, because females generally have much less feathered antennae.
help Feathered Thorn FAQ
Why do male Feathered Thorn moths have plumose antennae?
The strongly branched antennae help males detect chemical signals released by females. The fine branches increase the surface area available for sensing those signals.
When can Feathered Thorn moths be seen?
The Feathered Thorn is associated with the autumn flight season in Europe. Its adult activity is therefore linked to the autumn period rather than a single confirmed date.
What type of insect is the Feathered Thorn?
It is a geometrid moth. Adult males are especially recognizable for their strongly plumose antennae.
What do Feathered Thorn antennae detect?
They detect chemical signals, often called pheromones, released by females. The many fine branches help males pick up these signals.
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