What is a primary feature of a swallow bug?

The primary feature of a swallow bug is that it is slightly smaller and narrower than a bed bug. This characteristic is significant because swallow bugs resemble bed bugs in other aspects, which can lead to confusion during identification. Swallow bugs are specifically adapted to living in the nests of swallows and feed on their blood, making their size and shape tailored to their environment. Recognizing that they are smaller and narrower helps pest control professionals distinguish them from bed bugs, which are more common household pests.

While other attributes, such as markings or longevity after infestation, may seem relevant, the physical size comparison is critical for effective identification and management strategies in the field. Understanding this feature aids pest control applicators in accurately diagnosing and responding to infestations.