Subject
- Melanolophia Moth1
- Melanolophia species1
- Melittia cucurbitae1
- Metallata absumens1
- Milbert's Tortoiseshell1
- Miles Brewton House1
- Milkweed Tussock Moth1
- Mills, Robert J. (Robert James), 1920-19811
- Monarch1
- Monarch butterfly1
- Monuments1
- Mournful Sphinx1
- Mourning Cloak1
- Mourning cloak butterfly1
- Museums1
- Nadata gibbosa1
- Nason's Slug Moth1
- Natada nasoni1
- Nemoria bistriaria1
- Nemoria lixaria1