A brood (nest) cell of leafcutting bee, Megachile sp., formed from cut pieces of flower petals.

A brood (nest) cell of leafcutting bee formed from cut pieces of flower petals. Credit: Chelsey Ritner, Exotic Bee ID, USDA APHIS PPQ, Bugwood.org<br />Licensed under a <a href="https://creativecommons.org/licenses/by-nc/3.0/us/">Creative Commons Attribution-Noncommercial 3.0 License</a>
Credit: Chelsey Ritner, Exotic Bee ID, USDA APHIS PPQ, Bugwood.org
Licensed under a Creative Commons Attribution-Noncommercial 3.0 License