several yellow aphids on plant

    Aphids

    More than 1,300 species in North America north of Mexico
    Two Asian lady beetles, one orange with several black spots, the other red with no spots

    Asian Lady Beetle

    Harmonia axyridis
    Photo of a Banded Tiger Moth

    Banded Tiger Moth

    Apantesis vittata
    Several regal fritillaries feeding on butterfly weed

    Butterflies and Skippers

    More than 700 species in North America north of Mexico
    Image of a Cecropia moth.

    Cecropia Moth

    Hyalophora cecropia
    Photo of an adult damselfly on a twig next to water.

    Damselflies

    Species in the suborder Zygoptera
    Orangethroat darter male in spawning colors, side view photo with black background

    Darters

    Etheostoma, Percina, Ammocrypta, and Crystallaria spp.
    Photo of a male Banded Pennant dragonfly

    Dragonflies

    Species in the suborder Anisoptera
    elephant's ear

    Elephantear

    Elliptio crassidens
    exclamation mark

    Endangered

    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    Polyphemus Moth, Belton MO

    Giant Silkworm and Royal Moths

    About 75 species in North America north of Mexico
    Photo of a male Io Moth

    Io Moth

    Automeris io
    Seven-spotted lady beetle on a flower

    Lady Beetles (Ladybird Beetles; Ladybugs)

    Nearly 500 species in North America north of Mexico
    image of a Leafhopper on leaf

    Leafhoppers

    More than 3,000 species in North America north of Mexico
    Photo of a magdalen underwing moth

    Magdalen Underwing

    Catocala illecta
    Marbled orbweaver spider in web

    Marbled Orbweaver

    Araneus marmoreus
    Southern redbelly dace male in spawning colors, side view photo with black background

    Minnows

    Notropis, Cyprinella, Hybognathus, Luxilus, and others
    Forage looper moth perched on a brick wall, viewed from side

    Moths

    More than 12,000 species in North America north of Mexico
    Ninebark calligraphy beetle on cluster of ninebark flower buds

    Ninebark Calligraphy Beetle

    Calligrapha spiraea
    image of a Dagger Moth

    Noctuid Moths

    More than 2,500 species in North America north of Mexico
    Photo of a Painted Lichen Moth

    Painted Lichen Moth

    Hypoprepia fucosa
    image of a Yellow-Fringed Dolichomia Moth

    Pyralid Moths

    More than 680 species in North America north of Mexico
    Photo of a ramshorn snail on a wet rock.

    Ramshorn Snails

    Gyraulus, Helisoma, Menetus, Micromenetus, Planorbula spp.
    image of a Carolina Grasshopper

    Short-Horned Grasshoppers

    About 620 species in North America
    A white-lined sphinx moth sips nectar from a purple locoweed flower

    Sphinx Moths (Hawk Moths)

    More than 50 species in Missouri
    Adult salt marsh moth resting on a vertical plant stem

    Tiger and Lichen Moths

    Subfamily Arctiinae (formerly a family)
    Photo of an aquatic tubificid worm among rocks in an aquarium.

    Tubificid Worms (Tubifex Worms)

    Tubifex spp. and other aquatic tubificid annelids
    Photo of a magdalen underwing moth

    Underwing Moths

    Catocala spp., more than 100 species in North America north of Mexico
    V-marked lady beetle crawling on a flower

    V-Marked Lady Beetle

    Neoharmonia venusta
    Water springtails congregate in water above soggy dead leaves

    Water Springtail

    Podura aquatica
    Cryptorhynchus weevil viewed from side

    Weevils (Snout Beetles; Bark Beetles)

    About 2,500 species in North America north of Mexico
    Image of a western mudsnake

    Western Mudsnake

    Farancia abacura reinwardtii
    Photo of wood ear mushroom, which looks like a brownish human ear stuck to a log

    Wood Ear (Tree Ear)

    Auricularia auricula (formerly A. auricula-judae)
    fork and knife icon

    Edible

    image of Xystodesmid Millipede crawling on a forest floor

    Xystodesmid Millipedes

    8 tribes, with about 23 genera, in North America north of Mexico