Treble-bar
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Aplocera
treble-bar moths
Aplocera is a genus of geometer moths in the family Geometridae, subfamily Larentiinae, comprising approximately 30 described species distributed across the Palearctic region. The genus includes several well-known species such as Aplocera plagiata (treble-bar), Aplocera praeformata (purple treble-bar), and Aplocera efformata (lesser treble-bar). These moths are characterized by distinctive wing patterns with transverse dark bands, giving rise to their common name. Several species are declining in parts of Europe due to habitat loss.