Two species that can be confusing, especially when they are worn are Willow Beauty (Peribatodes rhomboidaria) and Mottled Beauty (Alcis repandata) When they are fresh, as the two below are, the differences are easier to see.
On this Willow Beauty (Peribatodes rhomboidaria) above the outer two cross-lines on the fore-wing almost meet at the trailing edge of the wing to form a "Blob"
On the underside the tip of the wing has a paler square, that can stand out quite prominently and is normally the palest area on the under-wing.
Overall the Mottled Beauty is a more striking moth. The two cross-lines remain almost parallel on converge only a little when they meet the trailing edge.
The tip of the wing can show a slightly paler tip to its surroundings, but it is less noticeable and more or less concolorous with the other pale areas on the under-wing.
I'd been talking to my grandson Jack about these two species and thought that a blog about them might be worth while, any comment would be useful.
A closer look at my numerous Willows now begins !
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