What is the primary characteristic of centipedes?

The primary characteristic of centipedes is that they have one pair of legs per segment. This morphological feature is key to differentiating centipedes from other similar arthropods, such as millipedes, which have two pairs of legs per body segment. Centipedes belong to the class Chilopoda and are known for their elongated bodies, with the number of segments and corresponding pairs of legs varying among different species. Each segment has a single pair of legs, which makes them highly agile predators. Their unique leg arrangement allows for efficient movement and hunting behavior, reflecting their evolutionary adaptations to various environments. Understanding this distinct anatomical feature is critical for recognizing centipedes in studies of entomology and pest control.