Maine insects decline sharply, experts warn of ecosystem impact

Naturalists in Maine report a noticeable drop in local insect populations, including monarch butterflies, milkweed tussock moths, Japanese beetles and browntail moth caterpillars. Residents such as Lee Davis, who cultivates milkweed for migrating monarchs, have observed fewer insects visiting his yard, prompting concerns about the health of pollinator species.

Doug Hitchcox of Maine Audubon emphasized the broader importance of insects for pollination and food‑web stability, noting that while long‑term scientific data for Maine are limited, the pattern mirrors a worldwide decline documented in recent studies. Researchers point to habitat loss, pesticide use and climate change as major drivers, with some global surveys showing up to a 90% drop in certain butterfly populations over two decades. The local observations add to growing calls for increased monitoring and conservation action.

The article also references a 2018 New York Times Magazine piece titled “The Insect Apocalypse is Here,” which sparked heightened public interest in insect loss. While some entomologists caution against alarmist language, they agree the trend warrants attention and proactive measures.