Which group of pests do arachnids belong to?

Arachnids belong to the group known as invertebrates. This classification is based on the absence of a backbone, which is a defining characteristic of invertebrates. Arachnids, which include spiders, scorpions, ticks, and mites, are characterized by having eight legs and a body divided into two segments: the cephalothorax and the abdomen.

In contrast, insects, while both arachnids and insects fall under the larger group of arthropods, are distinct in that they have six legs and a different body structure. Vertebrates, which include mammals, birds, reptiles, amphibians, and fish, are organisms that possess a backbone, clearly separating them from invertebrates. Crustaceans, such as crabs and lobsters, are also invertebrates but belong to a different subphylum within the arthropods. Understanding these classifications helps clarify the relationships among various groups of organisms and their fundamental biological characteristics.