1.   One menace is the microscopic tracheal mite that affects the breathing tubes of honey bees, often suffocating them.

2.   The center also has been at the forefront of the effort to control the deadly varroa and tracheal mites.

3.   The tracheal mite, which has weakened in the last few years, can be killed with menthol crystals.

4.   That parasite, known as the tracheal mite, crawls into the breathing tubes of an adult honeybee and sucks its blood.

5.   The original invader, the tiny tracheal mite, crawls into the breathing tubes of bees and lives off their blood.