Which ants are characterized by having two nodes?

The correct choice is that the Thief Ant is characterized by having two nodes. In ant anatomy, the term "nodes" refers to the distinct segments found in the petiole, the connection between the thorax and abdomen. Ants that have two nodes are typically identified by the presence of these segments, which are crucial for classification purposes.

Thief Ants specifically exhibit this characteristic, differentiating them from other ant species. They are also known for their small size and yellowish coloration, which can further assist in their identification. Understanding the anatomy of ants and recognizing the node count is essential for correctly categorizing different ant species within entomology or pest control contexts.

Other options such as Crazy Ants, Pharaoh Ants, and Pavement Ants do not share the same two-node structure, as their petiole configurations differ. This knowledge is valuable when observing and identifying ant species in the field, ensuring correct management strategies can be employed for pest control and ecological studies.