There are three main ways parasitoids will infect their hosts:
1. Laying eggs in (or on, or near) host eggs or young.
2. Laying eggs on plants within the host’s environment.
3. Laying eggs in (or on, or near) adult hosts—which have been stung/paralysed.[^1]
[^1]: ‘[[Australian Museum. ‘Predators, parasites and parasitoids’, 2022.|Predators, parasites and parasitoids]]’, *Australian Museum*, updated 6 April 2022, https://australian.museum/learn/animals/insects/predators-parasites-and-parasitoids/.