Some spiders are active hunters, such as wolf spiders, jumping spiders or crab spiders. Crab spiders have their legs directed forwards, so they resemble crabs. They are often brightly colored, and sit and wait on flowers for unsuspecting insects to visit. Other arthropods are also predators of insects, including sun spiders, scorpions, whip scorpions, centipedes, and predatory mites. The importance of these creatures in controlling pest insects is often ignored.
Every fisherman knows to use flies to catch a trout.
Amphibians - Frogs feed on a number of insects. Reptiles - Snakes, some turtles, and lizards all feed on insects and other arthropods. Birds - Many different kinds of birds are insectivores, including owls. Mammals - Bats, shrews, moles, etc. Many other types of mammals supplement their diet with insects, including humans.