Entomological collections are organized groups of preserved insects and other arthropods used for scientific research and education. These collections help scientists study insect diversity, behavior, and evolution, providing valuable data for fields like ecology and agriculture. Typically housed in museums or universities, entomological collections can contain thousands to millions of specimens. Each specimen is carefully labeled with information about its species, location, and date of collection, contributing to a global database that supports research on topics such as biodiversity, conservation, and climate change.