Which geographical area represents the western limit of the Io moth's broad distribution mentioned in the text?
Answer
Montana.
The Io moth's distribution spans across North America, extending from southern Canada down through the eastern and central United States, reaching west into states like Montana.

Related Questions
Is the Io moth generally classified as an invasive species?What colors characterize the upper wings of the male Io moth?What feature makes the Io moth caterpillars primarily responsible for painful human encounters?What is the approximate maximum wingspan of an adult Io moth?What best describes the feeding habit of the Io moth larvae?How do female Io moths typically differ in appearance from males?Which geographical area represents the western limit of the Io moth's broad distribution mentioned in the text?What method is recommended for safely observing adult Io moths?What reaction is commonly reported after contact with the stinging spines of Io moth caterpillars?When a native Io moth population booms locally, causing defoliation, what term is considered more accurate than 'invasion'?