Another narcissus

I had to go out late with a flash, because my little camera managed to fail to record the shots I thought I took in the middle of the day.  I was interested when I got the flower on the computer to see that there are two green streaks on the bloom. I went outside again with torch and reading glasses, and confirmed that they are bugs of some kind, possibly caterpillars.  I wonder if they'll hide in the day time.