Pygmy bee fly, Bombylius pygmaeus, Bombyliidae
This species is found primarily in the northeastern United States and up into Canada. Like many bee flies, larvae are parasitoids of solitary bee larvae. Adults drink nectar with their long proboscis.
Photos 1-2 by joebartok, 3-4 by scotiaspinner, 5-7 by jdee, 8 by Judy Gallagher, 9 by pawelp, and 10 (for scale) by joseph92