A little similar to the Honeysuckle moth, the Diamond-back moth has a more contrasting light back
and has irregular patches on its banded antennae. Most have two grey lines on their upturned tail. Many are migrants.
They are active throughout the summer and their larvae can be a serious pest to cabbage and related plants.
Wingspan 13-15mm; UK flight time May-Sep.
The back which gives the moth its name, by day . . .
. . . and by night (patterns not very diamond-shaped).