Ligature Strangulation. Strangulation is that form of asphyxia which is caused from constriction of the neck by ligature without suspending the body. Pulling a U-shaped ligature against the front and sides of the neck while standing at the back can cause death. It is of two types: [1] Strangulation by a ligature, and [2] manual strangulation or throttling.
What are the enemies of the monarch butterfly? The biggest threat to the monarch butterfly are wasps, bees, frogs, and especially people. Insects like to eat the eggs of monarch butterflies.
Of course, there's more to the butterfly world than monarchs. And attracting other butterflies, including tiger swallowtails and black swallowtails, depends on recognizing this same fact: grow particular plants to attract adult swallowtails, and grow another set of plants to serve as hosts for swallowtail caterpillars.