Megachile mendica
Megachile mendica, the Flat-tailed Leafcutter Bee, is a species of solitary bee in the family Megachilidae. It was described by Ezra Townsend Cresson in 1878.
The Flat-tailed Leafcutter Bee uses leaf pieces as nesting materials. It can be attracted to bee blocks and will nest in holes from 5/16" to 7/16" in diameter.