Data from: Discovery of a critical time point in the development and handling of an orchard pollinator, the blue orchard bee (<i>Osmia lignaria</i>, Hymenoptera: Megachilidae)
<p dir="ltr">A native solitary bee to North America, the blue orchard bee (<i>Osmia lignaria</i> Say, Hymenoptera: Megachilidae) is a crucial pollinator for orchard crops such as apples, almonds, and cherries. <i>Osmia lignaria</i> is often managed commercially and sold to complement honey bee pollination …