Praying mantis, centipedes, Tarantulas, dragonflies, scorpions and some species of ants.a centipedes, tarantulas, and scorpions are not insects.
insects that eat other insects are called canivores. This means that they eat plants. They can also eat their own kind (cannibals).
Three reasons are theorized:1.) They are an easy source of nutrients for plants that don't get much sunlight.2.) They are a great way to stay alive without water for shorter periods of time.3.)...
Not normally, but if you have babies in a tank with adults they might eat them, but probably won't. Some eat their shedded skin though.
Preying Mantis