This index features various insects, arachnids, and animals commonly considered pests, whose common names begin with the letter A. Click on a pest name to view detailed identification and control information.
A detailed list and link to more information on them is at bottom of the page
Household & Structural Pests (A)
- Ants: The most common ‘A’ pest, found globally, including carpenter ants, pavement ants, and odorous house ants.
- American Cockroach: The largest house-infesting cockroach species in the United States.
- Attic Rats: Rodents that often take up residence in upper levels of homes, causing noise and structural damage.
- Acrobat Ants: Small ants known for raising their abdomen over their head when disturbed.
Garden & Agricultural Pests (A)
- Aphids: Tiny, soft-bodied plant-sucking insects that can rapidly destroy crops and ornamental plants.
- Armyworms: Larvae of a moth species that chew on leaves and stems, often moving in large “armies.”
- Apple Maggots: Fly larvae that infest apples and other fruits, leading to premature fruit drop.
Arachnids & Others (A)
- Anchor Ticks: A species of tick found in regional areas known to transmit diseases.
Quick Tip: The most frequent structural pest starting with ‘A’ is the Ant. Identification is key to successful treatment, as carpenter ants require different methods than pavement ants.
- Ants
- Aphids
- Armyworms
- American Cockroaches
- Asian Tiger Mosquitoes
- Argentine Ants
- Acrobat Ants
- Ambrosia Beetles
- Apple Maggots
- Asian Lady Beetles
- Arizona Bark Scorpions
- Africanized Honey Bees
- Alfalfa Weevils
- Australian Cockroaches
- Asian Longhorned Beetles
- Anopheles Mosquitoes
- American Spider Beetles
- Antlion Larvae
- Ash Borers
- Anchor Worms
- Anobiid Beetles
- Angoumois Grain Moths
- Army Ants
- Asparagus Beetles
- Autumn Spider Mites
- Alderflies
- Arrowhead Spiders
- American Dog Ticks