The Family Megachilidae is a diverse group of bees, commonly known as leaf-cutter or mason bees. They are an important pollinator of many plants and are found all over the world. Some synonyms for this family include Anthidiidae, Ashmeadiidae, Lithurgidae, and Osmiidae, which are all considered part of the superfamily Apoidea. These bees are known for constructing nests out of leaves, mud, and other materials, which they use to protect and rear their young. They play a crucial role in the ecosystem, contributing to the pollination of various plant species and maintaining the health of many ecosystems.