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.
Mom to the rescue! This situation is one of the reasons it's good to have a butterfly garden buddy-extra host plant (caterpillar food plant) reserve. I was out of food, but she had dill, parsley, fennel and rue in her garden.he gave me some dill plants and a fennel plant, which I put in my garden by the caterpillars, and took her new caterpillars home. The caterpillars that remained chewed all the dill, fennel, and parsley down to nothing but stubs, and then vanished.