How do they do it?

This Tropinota Squalida. A very creepy and a very hairy beetle I see around a lot. Especially around Rockroses that bloom in spring. Most of the time they will sit inside the flower and feed on pollen or nectar. That happens when the flower is big enough for them to land on and don't miss it I guess. Some Rockrose flowers are the size of an orange - the white ones.

This yellow one I found growing near pines and their flowers are much smaller. But I did not expect to see what I saw that day!
I came closer to the bush, because I saw lots of petals on the ground. I thought they simply faded and start to fall.

But no, the flowers were just starting to open and there was lots of buds. Not fading then! And then I looked closer and some flowers seemed to be in good shape, but just with a few petals on..
WTF - I thought?
Some disease?

Yea... its called Tropinota Squalida!

_{Please notice the huge claws it has that work like hooks}

Those little beasts do not land on the flowers like they do with the bigger blooms. They land on the leaves and stems (they must be blind like bats!) and then crawl up until they get to the petals. But those are still standing on their way to get to the delicious center.
What to do?
BITE THEM OFF!

And this is what they have been doing... slowly munching off one or two petals of the each flower.