Call me picky, but I get the feeling those leaf chewings look more like lepidoptera caterpillar damage; it is not somehow as tatty as I might expect from weevils. Many caterpillars are nocturnal, of course, so you'd have to go out with a torch (and a handful of luck/patience) to check, John.
By way of an aside/parallel...
In geology, we have things called trace fossils (ichnofossils if you want to be jargonistic). These are fossils not of creatures themselves but of the traces they left behind; fossilized footprints are an example, though rare. Much more common are traces left by worms and shells as they move through sediment or across its surface. If you're very lucky you might find a real fossil at the end of a trace fossil - telling you for sure what made the trace fossil. In general, though, it is a good guessing game - identifying the creature from the trace it left behind.
One is often forced to play a similar game with modern-day creatures that leave evidence of their existence on or in plants. With evidence and observations from many observers over many years, we have come to recognize some of the creators of these signs, though usually with a degree of uncertainty. I have recently posted pictures of
borings in stems of olive trees, which I attribute to leopard moth larvae. Tattered flower petals, one associates with earwigs. Particular shapes of chewed-out portions of leaves could indicate leaf-cutter bees. And so on. But sometimes we are just don't know. Fascination and wondrousness often have enigma, frustration and controversy as a companions!
