What type of colony do Formosan termites create?

Formosan termites are known for creating carton colonies, which are a unique structure they build using a mixture of wood, soil, and their own saliva. This material forms a lightweight material that resembles cardboard or papier-mâché, hence the term "carton." The carton nests can be found both above ground and in the soil, which allows them to establish colonies in various environments.

This adaptability is a significant characteristic of Formosan termites, as they can thrive in many different settings, often leading to more infestations in urban areas. Their ability to build these carton nests also contributes to their aggressive nature and the difficulty in controlling their populations. Other colony types, like aerial or paper colonies, do not accurately represent the biology and behavior of Formosan termites, making carton colonies the correct answer for this question.