About Hammerschmidtia rufa (Williston, 1882)
Hammerschmidtia rufa, commonly called the black-bristled logsitter, is an uncommon syrphid fly species found throughout North America. Like other hoverflies, this species can stay nearly motionless while in flight. Adult flies of this species are also referred to as flower flies, because they are often seen on flowers, where they collect nectar for energy and pollen that is rich in protein. The larvae of Hammerschmidtia rufa have been recorded living under the bark of aspen, elm, walnut, and willow trees. This species was previously described as Hammerschmidtia ferruginea by Curran.
