Parasitical beatles and snails get their just desserts

Most people think that the kermes oak, Quercus coccifera, is actually holly because it’s a prickly evergreen tree that round here doesn’t usually get much bigger than 2m. Cocciferous plants are so-called because they bear berries (coccus + fero), and people used to make cochineal out of what they thought were this plant’s berries. Then…