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Photos & Graphics: Fire Ants

Please attribute all images as follows:

Source: Journal of Allergy and Clinical Immunology.

For more seasonal allergy visuals, visit the National Allergy Bureau's Plant and Pollen Photo Gallery.


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 Solenopsis invicta worker ants and queen. Arranged in a circle are majors (the largest workers), media (medium-sized workers) and minors (the smallest workers). Minors comprise the majority of worker ants in a colony. A queen is displayed to the right.
 


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 United States range expansion of imported fire ants (Solenopsis invicta), 1918-1999.
 


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(left) Single queen fire ant mound at street curb.

(right) Fire ant infestation of electrical wiring.

 
 


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  1. Stinging fire ant.
  2. Wheal-and-flare reactions to fire ant venom, five minutes after multiple fire ant stings.
  3. Sterile pustule 24 hours after fire ant sting.
  4. Cutaneous late-phase allergic reactions 24 hours after fire ant sting. Excoriated sterile pustule in the center of lesion.

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