Which type of ant has a hidden single node and a pungent odor when squished?

The odorous house ant is characterized by a hidden single node between its thorax and abdomen, which is a defining feature in ant identification. When these ants are crushed, they emit a distinctive, pungent odor reminiscent of rancid butter or rotten coconut. This smell is a key identification trait and is particularly useful in distinguishing them from other ants, especially in field scenarios where visual examination might be limited.

In contrast, the other mentioned ants have different characteristics. For instance, velvet tree ants, often found in brightly colored forms, typically do not emit a notable odor upon being squished, and ghost ants tend to have a more pronounced node structure. Carpenter ants, known for their wood-destroying habits, do not possess the same odor when crushed and usually have a much larger size compared to odorous house ants. Understanding these specific attributes allows pest control professionals to accurately identify and manage ant species effectively.