Just a bit of amateur science. I bred my last Emperorlets on hawthorn and started off this year's generation on the same. But others' experience here with bramble prompted me to stick in some bramble leaves yesterday as an alternative menu.
Thus far, as you can see above, conservative habits reign.
Is the different colouring translucence? Or are those two eating more (or less)?
One new arrival in the trap: this smart Muslin Moth:
Martin Wainwright, Thrupp, Oxon