image of an Alderfly

    Alderflies

    Sialis spp.
    image of Caddisfly on leaf

    Caddisflies

    About 1,500 species in North America north of Mexico
    image of Green Lacewing clinging to rock

    Green Lacewings

    About 85 species in North America north of Mexico
    Photo of an adult stonefly on a leaf

    Stoneflies

    Nearly 700 species in North America north of Mexico