the prevailing hypothesis was that these beetles may use hydroquinones—the building blocks of the beetle’s shell—to biosynthesize the ingredients necessary for their explosive secretions.

However changes in the beetles lifestyle may be an important contributor as well. CU biologists Jeff Mitton and Scott Ferrenberg have studied the life cycle and activities of the mountain pine beetle, ...

For this reason, homeowners may find them in relatively large numbers around windows, patio doors and other openings to outdoors. Indoors, these beetles become a nuisance not only by their ...