State: symbol; stonefly; designate as the official state insect. Creates new act.

House Bill 4519, introduced in the Michigan Legislature on May 21, 2025, proposes designating the stonefly (Pteronarcys sp.) as the official state insect of Michigan. The bill was referred to the House Government Operations Committee for further consideration.

Supporters of HB4519 argue that recognizing the stonefly as Michigan's state insect highlights the importance of clean water ecosystems, as stoneflies are indicators of water quality. This designation could raise public awareness about environmental conservation efforts in the state.

Critics of the bill contend that legislative time and resources should be prioritized for more pressing issues affecting Michigan residents, rather than symbolic designations. They question the necessity and impact of naming an official state insect.