Admirable Grasshopper on grass stem

    Admirable Grasshopper

    Syrbula admirabilis
    Photo of an alcohol inky mushroom cut in half lengthwise.

    Alcohol Inky

    Coprinopsis atramentaria (formerly Coprinus atramentarius)
    fork and knife icon

    Edible

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

    Alderfly Larvae

    Sialis spp.
    Image of alligator snapping turtle

    Alligator Snapping Turtle

    Macrochelys temminckii
    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

    Image of American Bullfrog

    American Bullfrog

    Lithobates catesbeianus (formerly Rana catesbeiana)
    American snout butterfly resting with wings folded

    American Snout

    Libytheana carinent
    image of Walker's Cicada clinging to a perch

    Annual Cicadas

    Neotibicen spp. (in Missouri) (formerly Tibicen)
    Photo of adult antlion with wings spread

    Antlion Adults

    More than 100 species in North America north of Mexico
    image of Antlion Larva on rock

    Antlion Larvae (Doodlebug Larvae)

    More than 100 species in North America north of Mexico
    several yellow aphids on plant

    Aphids

    More than 1,300 species in North America north of Mexico
    Photo of an aquatic isopod in an aquarium, crawling on a rock.

    Aquatic Pillbugs and Sowbugs (Aquatic Isopods)

    Freshwater members of the crustacean order Isopoda
    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 artist conk, woody bracket fungus on tree shown from side

    Artist Conk

    Ganoderma applanatum
    Photo of two ash tree boletes, tan pored mushrooms, one overturned showing pores

    Ash Tree Bolete

    Boletinellus merulioides
    fork and knife icon

    Edible

    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 a belted crayfish, also called Big River crayfish.

    Belted Crayfish (Big River Crayfish)

    Faxonius harrisonii (formerly Orconectes harrisonii)
    Photo of a Big Creek crayfish.

    Big Creek Crayfish

    Faxonius peruncus (formerly Orconectes peruncus)
    Photo of two gigantic red false morels, cut and laying on a ground

    Big Red False Morel

    Gyromitra caroliniana
    Poisonous Icon

    Poisonous

    image of a Toad Bug

    Big-Eyed Toad Bug

    Gelastocoris oculatus
    Image of a bigmouth buffalo

    Bigmouth Buffalo

    Ictiobus cyprinellus
    Photo of broken bolete mushroom cap, being held to show pores

    Bitter Bolete

    Tylopilus felleus
    A long fish with prominent dorsal and pectoral fins

    Black Carp

    Mylopharyngodon piceus
    invasive icon

    Invasive

    Photograph of a black morel mushroom

    Black Morel

    Morchella angusticeps (formerly M. elata)
    fork and knife icon

    Edible

    Photo of two black trumpets, dark brown vase-shaped mushrooms on mossy ground

    Black Trumpet

    Craterellus cornucopioides (C. fallax)
    fork and knife icon

    Edible

    Photo of black-footed polypore, mature specimens, with photographer's foot.

    Black-Footed Polypore

    Polyporus badius
    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

    Image of a blackspotted topminnow

    Blackspotted Topminnow

    Fundulus olivaceus
    Image of a blackstripe topminnow

    Blackstripe Topminnow

    Fundulus notatus
    Photo of cluster of bleeding mycenas, small, capped, reddish mushrooms

    Bleeding Mycena

    Mycena haematopus
    Photo of a meloe blister beetle, female, on ground

    Blister Beetles

    More than 400 species in North America north of Mexico
    image of greenbottle fly on carcass

    Blow Flies (Bottle Flies)

    About 84 species in North America.
    Photo of a blusher, a tan gilled mushroom, showing injured spot turning rust red

    Blusher

    Amanita rubescens
    Boreal Chorus Frog

    Boreal Chorus Frog

    Pseudacris maculata
    Image of a broad-banded watersnake

    Broad-Banded Watersnake

    Nerodia fasciata confluens
    Photo of Broad-headed skink on ground among leaves

    Broad-Headed Skink

    Plestiodon laticeps
    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

Pages