Harmful
Aphididae
Aphids
(Family Aphididae)
This is one bug I think most people can identify immediately.
Entomology
Helpful
Polistinae
Paper Wasps
(Subfamily Polistinae)
Though these wasps can be known for stings, they are not usually aggressive unless they are protecting their nests. They are also not scavengers such as yellow jackets, so they are less likely to aggravate your next picnic. However, they are fantastic pollinators and predators.
Helpful
Coccinellidae
Mealybug Destroyers
(Genus: Cryptolaemus)
The adults have the general shape of ladybugs but usually lack the bright colors and spots. The larvae are fluffy, white, and actually resemble mealybugs.
Helpful
Syrphidae
Syrphid Flies
(Family: Syrphidae)
If you can get close enough, make sure to count the wings. Two wings, and you’ve got a fly; four wings, and watch out – it’s a bee or wasp!
Helpful
Salticidae
Jumping Spiders
(Family: Salticidae)
Jumping Spiders can be distinguished from other spider families by their large eyes and quick jumping abilities.
Helpful
Araneae
Spiders
(Class: Araneae)
Though spiders are often feared by many people, they are quite beneficial in your garden! They are efficient predators and primarily feed on insects.