![]() The history of this insect in the United States is very short because it was just discovered in Pennsylvania. Host Preferences: Walnut, Apple, Pine, Poplar, Plum, Peach, Apricot, Cherry, Oak trees, wild grape vines and up to 70 other species! History Nymphs are present on the plants during the spring, and going through several instars until they become adults. Adults will oviposit on any smooth trunk tree, stones, bricks, or any vertical smooth surface including anything that is stored outside for long periods of time like farm equipment. In late September through November eggs are laid. It has the potential to impact the logging, fruit tree and grape industries, which in Pennsylvania alone gross up to $190.5 million dollars. Over there it has been documented to attack 25 plant species that also grow in the United States. ![]() They can be found sucking the phloem out of plants like the adults.Įven though it has just been found in the United States, it has demonstrated its ecological impact in Korea, where it is also invasive. First instars are black with white dots present all over and as it grows red patches start to develop. They undergo several molts (instars) until they become adults. Larvae Description: Despite the nymphs being quite small they are also very noticeable. Due to the sugar content of the “honey dew”, large infestations can produce mats of fungus and mold at the tree base which can hinder growth or kill the tree. Wasps, hornets and bees are known to feed on the “honey dew” therefore, another sign of an infestation is increased activity of these insects around the infested tree. Symptoms of an infestation are weeping wounds filled with sap and large amounts of “honey dew” (insect waste) will gather at the base of the tree and blacken the soil. They have piercing mouthparts that allow them to feed on the phloem of plants. Adult Description: The adult spotted laternfly, Lycorma delicatula, is a small but conspicuous insect with black spots on grayish forewings, and pinkish-red hindwings with black spots and thick striping.
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