The world can be divided into the zoogeographical regions shown in the figure below. The divisions follow the World Wildlife Fund ecozones with the addition of an Arctic region that is occasionally used in Lepidoptera-related descriptions.
- Afrotropic. A region including Sub-Saharan Africa.
- Arctic. A region including the areas in and around the Arctic circle.
- Australasia. A region including Australia, New Guinea, New Zealand, and neighbouring islands. The northern boundary of this zone is known as the Wallace line.
- Holarctic. A term used to describe the combination of the Nearctic and Palearctic regions.
- Indomalaya. A region including the Indian subcontinent, Southeast Asia, and southern China.
- Nearctic. A region including most of North America.
- Neotropic. A region including South America, Central America, and the Caribbean.
- Palearctic. A region including the bulk of Europe, Asia and North Africa.