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 backswimmer, side view

    Backswimmers

    About 32 North American species in the family Notonectidae
    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
    Marbled orbweaver spider in web

    Marbled Orbweaver

    Araneus marmoreus
    Photo of a northern crab spider

    Northern Crab Spider

    Mecaphesa asperata
    Photo of a ramshorn snail on a wet rock.

    Ramshorn Snails

    Gyraulus, Helisoma, Menetus, Micromenetus, Planorbula spp.
    Cryptorhynchus weevil viewed from side

    Weevils (Snout Beetles; Bark Beetles)

    About 2,500 species in North America north of Mexico
    image of Xystodesmid Millipede crawling on a forest floor

    Xystodesmid Millipedes

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