Spiders and predatory damsel and big-eyed bugs are known to be abundant and important predators, but there are many other insects that may prey on potato pests from time to time. Below are a few examples.
Flower fly larvae (Syrphidae)
Lady Beetles (Coccinelidae)
Brown lacewings (Hemerobiidae)
Aphidoletes midges (Cecidomyiidae)