- Hosts: Over 45 species of plants in 22 families. Monocots preferred over dicots. Common in palms, various grasses, ti leaf, iris, and most lilies including mondo.
- Range: Most of east side of BigIsland, Kona district and Kohala district; Oahu (Central Oahu, Waimanalo, Waialua); and Maui (Haiku, Paia, Makawao, Wailuku, and Kihei)
- Symptoms: Heavily damaged leaves, fecal pellets on the leaves
- Spread through: primarily through movement of infested plants.
- Health concern: stinging spines cause burning and itching of skin; swelling, welts, or blisters can occur followed by a persistent rash that may last for weeks. Severe symptoms include difficulty breathing. If severe symptoms or spines in the eyes occur, seek medical help immediately.
- Control: biological control identified and released. It has caused a decline in nettle caterpillar populations of 60%-90%.
Source: Nettle Caterpillar, State of Hawaii Department of Agriculture New Pest Advisory No. 01-03, Updated April 2011.