Arthropodology

Arthropodology is the branch of zoology devoted to arthropods, including insects, arachnids, crustaceans, and myriapods. It studies their diversity, anatomy, evolution, behavior, and ecological roles.

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Arthropoda: The animal phylum of invertebrates with segmented bodies, jointed appendages, and a chitinous exoskeleton. This is the animal phylum whose members define arthropodology.
Medical entomology: The study of insects and related arthropods that affect human health, including disease vectors and pests. It applies arthropod knowledge to disease transmission and human protection.
Ecdysis: The shedding of an arthropod's old cuticle as it grows or changes developmental stage. Because the rigid exoskeleton cannot expand continuously, growth requires periodic shedding.
Carl Linnaeus: A Swedish naturalist who established a widely used system of binomial nomenclature and biological classification. Linnaean classification supplied enduring names and ranks for arthropod study.
Arthropod phylogeny: The evolutionary history and relationships among arthropod lineages. Relationships among major arthropod groups remain a central research problem.
Insecta: The arthropod class characterized in most adults by three pairs of legs and a body divided into head, thorax, and abdomen. Insects are the most species-rich major group studied in the field.
Agricultural entomology: The study of insects that affect crops, livestock, and agricultural production. It uses insect biology to manage crop pests and beneficial species.
Metamorphosis: A developmental process in which an animal undergoes substantial changes in body form between life stages. Insect metamorphosis links juvenile and adult forms through distinct developmental strategies.
Jean-Baptiste Lamarck: A French naturalist who advanced early evolutionary ideas and helped organize invertebrate zoology. Lamarck's work helped define invertebrates as a major subject of zoological study.
Pancrustacea: The clade comprising crustaceans and hexapods, including insects. This grouping challenges traditional boundaries between crustaceans and insects.