Over the years I have raised multiple Orthopterans from nymphal stages to the adult stages as I find them interesting insects. I’ve never seriously bred them though – so I will only give general information on them. After all, Lepidopterans hold my main interest!
Orthoptera are hemimetabolous; they undergo several nyphal stages until they become sexually mature (winged) adults. Their main source of food is usually vegetal and most species will happily feed on fruits, vegetables and most plant matter like bramble leaves for example. Despite this they are not strictly herbivorous. In fact they are very opportunistic omnivores. They will scavenge and consume other insects if given the chance. Some species are even quite ferocious hunters go out of their way to catch live prey. To some degree, animal proteïns will be appreciated in their diet. For example fish food, boiled egg, cat food or dead insects will be a good addition to their vegetal diet. To some species live prey can also be offered, although most species prefer to scavenge dead insects – only a select few species are active predators. This does however wildly vary per family and species though. Tettigoniidae tend to be more carnivorous.
All in all, they’re pretty fun species, and their songs can be relaxing at night. Some random footage: