However, this is only one type of nonprofit entity. A mutual-benefit nonprofit is a type of nonprofit corporation that works for the betterment of a select group of members, rather than for the benefit of the public. Nonprofits are typically structured as corporations.
The elm leaf beetle, Pyrrhalta luteola (Muller), is an important pest of elm trees in many parts of the United States. It can be a nuisance in homes in the fall when adult beetles start looking for a place to spend the winter.
Dutch elm disease is a fungal disease that kills elm trees. The fungus cannot move by air or water to infect new trees but rather is carried by beetles or transmitted through grafted (connected) roots. Therefore, knowing the biology of the beetles is as important as the biology of the fungus.