Photo of an alderfly larva among rocks and gravel in an aquarium.

    Alderfly Larvae

    Sialis spp.
    Photo of a blusher, a tan gilled mushroom, showing injured spot turning rust red

    Amanitas

    Amanita spp. (about 600 species, worldwide)
    Poisonous Icon

    Poisonous

    Jagged ambush bug on a plant stem

    Ambush Bugs

    Phymata spp. and others in subfamily Phymatinae (ambush bugs)
    Venomous Icon

    Venomous

    several yellow aphids on plant

    Aphids

    More than 1,300 species in North America north of Mexico
    Photo of a spotted fishing spider perched on the water's surface amid floating duckweed plants

    Aquatic Spiders

    Dolomedes spp., Tetragnatha spp., and others
    brokenray

    Arkansas Brokenray

    Lampsilis reeveiana
    Arkansas Darter Male

    Arkansas Darter

    Etheostoma cragini
    Photo of two ash tree boletes, tan pored mushrooms, one overturned showing pores

    Ash Tree Bolete

    Boletinellus merulioides
    fork and knife icon

    Edible

    Two Asian lady beetles, one orange with several black spots, the other red with no spots

    Asian Lady Beetle

    Harmonia axyridis
    image of Assassin Bug crawling on a leaf

    Assassin Bugs

    Nearly 200 species in North America north of Mexico
    Venomous Icon

    Venomous

    Photo of backswimmer, side view

    Backswimmers

    About 32 North American species in the family Notonectidae
    Image of a banded scuplin

    Banded Sculpin

    Cottus carolinae
    image of Bee Fly on leaf

    Bee Flies

    About 800 species in North America
    Photo of Berkeley's polypore, fresh, young specimen.

    Berkeley’s Polypore

    Bondarzewia berkeleyi
    fork and knife icon

    Edible

    No photo available

    Big Laughing Gym (Big Laughing Jim)

    Gymnopilus junonius (formerly G. spectabilis)
    Poisonous Icon

    Poisonous

    Photo of black-staining polypore, a mushroom with tan, wavy, fan-shaped caps

    Black-Staining Polypore

    Meripilus sumstinei (formerly M. giganteus)
    fork and knife icon

    Edible

    Photo of a meloe blister beetle, female, on ground

    Blister Beetles

    More than 400 species in North America north of Mexico
    Image of a broad-banded watersnake

    Broad-Banded Watersnake

    Nerodia fasciata confluens
    Closeup of brown recluse spider on floor.

    Brown Recluse (Violin Spider)

    Loxosceles reclusa
    Venomous Icon

    Venomous

    Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
    Image of a bullsnake

    Bullsnake

    Pituophis catenifer sayi
    Several regal fritillaries feeding on butterfly weed

    Butterflies and Skippers

    More than 700 species in North America north of Mexico
    butterfly

    Butterfly

    Ellipsaria lineolata
    image of Caddisfly on leaf

    Caddisflies

    Various species in the order Trichoptera
    Photo of caddisfly larva with case made of detritus

    Caddisfly Larvae

    Various species in the order Trichoptera
    Photo of a cellar spider in her cobweb with egg sac

    Cellar Spiders

    Pholcus, Psilochorus, and others in the Pholcid family
    Photo of a central newt adult on a plastic aquarium plant.

    Central Newt

    Notophthalmus viridescens louisianensis
    Image of a chestnut lamprey

    Chestnut Lamprey

    Ichthyomyzon castaneus
    Photo of a Chickweed Geometer

    Chickweed Geometer

    Haematopis grataria
    Illustration of common carp

    Common Carp

    Cyprinus carpio
    invasive icon

    Invasive

    Photo of a common house spider, egg sac, and web

    Common House Spider

    Parasteatoda tepidariorum (syn. Achaeranea tepidariorum)
    Photo of a common wood-nymph butterfly

    Common Wood Nymph

    Cercyonis pegala
    Photo of a sod webworm adult moth on a window with hind end propped up

    Crambid Snout Moths

    More than 860 species in North America north of Mexico
    image of Crane Fly clinging to a twig

    Crane Flies

    There are over 500 species of crane flies in North America.
    Photo of crane fly larva

    Crane Fly Larvae

    There are over 500 species of crane flies in North America.
    Photo of cluster of pinkish crown-tipped coral mushrooms growing on rotting log

    Crown-Tipped Coral

    Artomyces pyxidatus (formerly Clavicorona pyxidata)
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    Edible

    Color illustration of Crystal Darter

    Crystal Darter

    Crystallaria asprella
    exclamation mark

    Endangered

    Photo of a Harvestman, viewed from above

    Daddy Longlegs (Harvestmen)

    About 6,500 species have been named so far, worldwide.
    Photo of an adult damselfly on a twig next to water.

    Damselflies

    Species in the suborder Zygoptera
    Photo of several deadly galerina mushroom caps, viewed from above.

    Deadly Galerina

    Galerina marginata (G. autumnalis)
    Poisonous Icon

    Poisonous

    deertoe

    Deertoe

    Truncilla truncata
    Photo of a Delaware Skipper

    Delaware Skipper

    Anatrytone logan
    Photo of a devil crayfish.

    Devil Crayfish

    Lacunicambarus aff. diogenes
    Image of a differential grasshopper.

    Differential Grasshopper

    Melanoplus differentialis
    Photo of a male Banded Pennant dragonfly

    Dragonflies

    Species in the suborder Anisoptera
    Top-view photo of three dryad's saddles, a tan bracket fungus, growing on wood

    Dryad’s Saddle

    Polyporus squamosus
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    Edible

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