Hellinsia inquinatus is a moth of the family Pterophoridae. It is found in North America, including Florida, Mississippi, Oklahoma, Tennessee, Maryland,Moths of Maryland Alabama, Texas, Missouri, Colorado and Arizona. It has also been recorded from Hispaniola,Arthropods of Hispaniola (Dominican Republic and Haiti) Mexico, Puerto Rico and St. Thomas Island.

The wingspan is about .The Pterophoridae of North America Adults are on wing in April, June and December.

The larvae feed on Ambrosia artemissiifolia,Annotated Checklist of the Pterophoridae (Lepidoptera) of Florida Ambrosia trifida and Parthenium hysterophorus.

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