Later signs and symptoms may include: 1  Fever. 2  Headache. 3  Nausea. Vomiting. 4  Agitation. Anxiety. 5  Confusion. Hyperactivity.  Difficulty 1  swallowing. Excessive salivation.  Fear of water (hydrophobia) because of the difficulty in 1  swallowing. Hallucinations.  Insomnia. Partial paralysis.
Some people consider the caterpillars of this butterfly to be a pest, since they eat parsley, carrots, and other garden plants. Many people enjoy butterfly-watching and collecting, and the Eastern Black Swallowtail is considered by most to be a handsome specimen.he Eastern Black Swallowtail is a common swallowtail butterfly, often confused with the Pipevine Swallowtail or female Tiger Swallowtail. Both male and female Eastern Black Swallowtails are bluish-black with yellow spots on the wings.
In particular, monarch caterpillars eat milkweed because it makes them an unpleasant-tasting meal to predators. For the butterflies, which are able to suck and are unable to chew, you should include nectar plants with different colors of flowers, such as zinnias, lilacs, and the butterfly bush.acts About Butterflies. Natural butterfly habitats have been destroyed or affected by construction of housing and shopping developments, as well as by the use of pesticides and other chemicals.