1/4 to 1/2 inch

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image of Assassin Bug crawling on a leaf

Assassin Bugs

Nearly 200 species in North America north of Mexico

Venomous

image of Caddisfly on leaf

Caddisflies

About 1,500 species in North America north of Mexico

Click beetle resting on a brick wall

Click Beetles

Approximately 1,000 species in North America

A metallic green sweat bee gathering pollen on a yellow flowerhead

Halictid Bees (Sweat Bees)

More than 500 species in North America north of Mexico

image of an Ichneumon Wasp on tree trunk

Ichneumon Wasps

More than 5,000 species in North America

Swamp milkweed leaf beetle on a leaf it has chewed on.

Leaf Beetles

About 2,000 species in North America

image of a Leafhopper on leaf

Leafhoppers

More than 3,000 species in North America north of Mexico

Red milkweed beetle eating a common milkweed leaf.

Longhorned Beetles (Borers; Sawyer Beetles)

About 1,000 species in North America north of Mexico

Narceus Millipede crawling across gravel

Millipedes

More than 900 species in North America north of Mexico

Male eastern Hercules beetle walking in grass

Scarab Beetles

About 1,700 species in North America north of Mexico

Tan stink bug on dead leaves

Stink Bugs

In North America, more than 200 species in 64 genera.

image of a Wheel Bug, Side View

Wheel Bug

Arilus cristatus

Venomous