Least-marked Euchlaena
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Lepidoptera
- family: Geometridae
- genus: Euchlaena
- species: Euchlaena irraria
Branford- Branford Center
- Mansfield City
- Mystic
- Storrs
Connecticut- Clayton
Georgia- Bloomington
Indiana- Enfield
Maine- Leverett
- Marblehead
- Pelham
- West Concord
- Wilmington
Massachusetts- Brentwood
New Hampshire- Chatham
- East Freehold
- Freehold
- Newton
New Jersey- Fort Montgomery
New York- Shanor-Northvue
Pennsylvania
United States