Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.48736

Sec. 48736. Except as provided in this section, a person shall not take or remove or attempt to take or remove any caddis fly larvae or other insect larvae or insects of any kind from any trout stream of this state. The department may designate trout streams or portions of trout streams from which caddis fly larvae or other insect larvae or insects may be taken for commercial purposes by persons licensed in accordance with section 48732.  1 This section does not prohibit the taking of any caddis fly larvae or other insect larvae or insects from any trout stream of the state for personal use in fishing the stream from which taken.