Meaning : Wingless usually flattened bloodsucking insect parasitic on warm-blooded animals.
Synonyms : sucking louse
Meaning : Any of several small insects especially aphids that feed by sucking the juices from plants.
Synonyms : plant louse
Meaning : Wingless insect with mouth parts adapted for biting. Mostly parasitic on birds.
Synonyms : bird louse, biting louse