Nettle Caterpillar

In September 2001, specimens of this stinging nettle caterpillar were found at a nursery in Panaewa on the Big Island.  Although efforts successfully contained the nettle caterpillar for a number of years, another infestation was found in central Oahu in June 2007.  Efforts are now underway to manage and contain the Oahu infestation with the use of pheromone traps, insecticides, electric bug zappers, and public education.

Nettle caterpillars grow to a maximum length of one inch and are covered with spines.  They feed on over 45 species plants.  They are also a health concern due to the stinging spines which cause burning and itching sensations to the skin.

Suspected infestations with the nettle caterpillar in areas other than the Big Island and central Oahu should be reported to the State's toll-free Pest Hotline at 643-PEST (7378).

The following are links to information relating to the nettle caterpillar:

• HDOA New Pest Advisory - Nettle Caterpillar
• UH CES Pest Alert - Stinging Nettle Caterpillar
• Plant Pest control activities highlighted in the  Hawaii Department of Agriculture Annual 2006 Report   beginning on page 27.
• HDOA News Release - Stinging Caterpillar Found at Oahu Nursery 6/7/2007
• HDOA - CDFA research paper June 2007- Chronicles of Darna pallivitta