These ants have workers that are different sizes

African big-headed ant

African big-headed ants have two types of workers, little ones (minors) and ones with giant heads (majors)! Find out more

 
African big-headed ant large (major) worker (© Alex Wild alexanderwild.com)

Red imported fire ant

Red imported fire ants have workers of many different sizes. Find out more

 
Red imported fire ant stinging - they also bite! (© Alex Wild alexanderwild.com)

Singapore ant

Singapore ant workers come in a large range of sizes. Find out more

 
A close-up of a Singapore ant worker (© Eli Sarnat, Creative Commons Attribution, Share Alike CC BY-SA License)

Tropical fire ant

Tropical fire ant workers come in a range of sizes, from very small to large with square heads. Find out more

 
Tropical fire ant worker (© Alex Wild alexanderwild.com)
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