Life … Animals Arthropods Insects Hymenopterans Mason, Leafcutter, Carder, and Resin Bees Leafcutter, Mortar, and Resin Bees Megachile Willowherb Leafcutter Bee species 29 observations Willowherb Leafcutter Bee Megachile lapponica Field notes Supported by All 15 native plantssupport it in the US Nectar plants Plants whose flowers it visits Fireweed, Yellow Sweet-vetch, Fringed Willowherb, Marsh Willowherb 15 Close