Complex sentence: Larvae of the common crow butterfly ("Euploea core") also feed on oleanders, and they retain or modify toxins, making them unpalatable to would-be predators such as birds, but not to other invertebrates such as spiders and wasps.
Split into simpler sentences: Larvae of the common crow butterfly ("Euploea core") also feed on oleanders. These larvae retain or modify toxins, making them unpalatable to would-be predators such as birds, but not to other invertebrates such as spiders and wasps.