Margined Leatherwings are a type of Soldier Beetle. Adults can be found in the spring on the blossoms of a variety of flowers such as hydrangea, linden, New Jersey tea and tree of heaven. They roam into and out of blossoms, inadvertently covering themselves in pollen. This makes them great pollinators in gardens, fields and meadows. Females lay fertilized eggs in the soil near plants. Larvae hatch and prey on other insects. Their large consumption of pest insects makes them a benefit to gardeners.
A soil fungus is known to attack this insect as an adult. Parasitic in nature, it feeds on the internal body parts of the insect, eventually attacking the brain. Dead Margined Leatherwing Beetles have been found attached to leaves by their jaws. The fungus is believed to spread its spores out of the beetles' bodies in order to reproduce itself.