Similar word to aphid:

ant, aphid, arachnid, arthropod, bedbug, bee, beetle, bumblebee, butterfly, cockroach, cootie, daddy longlegs, dragonfly, flea, fly, fruit fly, gnat, grasshopper, hornet, ladybug, louse, mite, mite, mosquito, moth, pest, praying mantis, spider, termite, tick