How many segments compose a bed bug's antennae?

The correct answer identifies that a bed bug's antennae are composed of four distinct segments. This anatomical feature is crucial for their sensory perception, as the antennae are important for detecting chemical signals, humidity, and temperature. Insects typically have a varying number of antennae segments, which can affect their sensory capabilities and behaviors. For bed bugs, having four segments allows for a sophisticated level of environmental awareness, aiding in their survival and interaction with their habitats. This segment structure is consistent with the classification and morphology observed in many hemipteran insects, of which bed bugs are a part. Understanding this aspect of their anatomy can help provide insight into their behavior and ecology.