Hot Issues!!


Pest Alerts

Polyphagous Shot Hole Borer and Fusarium Dieback

Jeffrey Pine Needle Miner in Al Tahoe Neighborhood, South Lake Tahoe, CA

Redhaired Pine Bark Beetle

Mediterranean Pine Engraver

Sudden Oak Death



Firewood Movement: Buy It Where You Burn It

Firewood: Best Management Practices



Goldspotted Oak Borer

UCDavis IPM Pest Note

GSOB website

Pesticide Options 



Bark Beetles

Heterobasidion Root Disease Information

Port-Orford-cedar Root Disease

Pitch Canker



Pacific Islands Forest Health

Early Detection Pest Risk Assessment: Coconut Rhinoceros Beetle

Early Detection Pest Risk Assessment: Erythrina Gall Wasp

Detector Dogs: Coconut Rhinoceros Beetle (12MB video) 

Guam: Coconut Rhinoceros Beetle Eradication Plan

Koa Moth: The koa moth or koa looper, Scotorythra paludicola (Lepidoptera: Geometridae) is an endemic insect present on the islands of Hawai‘i, Maui, and O‘ahu. The caterpillars specialize in feeding on koa leaves and seed pods, and are typically present in low densities in koa forests. In high densities, caterpillars of this species are capable of defoliating mature koa trees. Population explosions have been documented historically on Maui and Hawai‘i islands, where large areas of koa forest have been defoliated. In January 2013 DOFAW documented extensive defoliation of large sections of mature koa forest on Hawai‘i Island. The current outbreak is the first reported on this island since the 1950’s and is the largest to date, spanning over 50,000 acres. DLNR-DOFAW, in cooperation with the University of Hawaii at Mānoa, the University of Hawai‘i at Hilo, Hawai‘i Cooperative Studies Unit, and the U.S. Geological Survey, Pacific Island Ecosystem Research Center and U.S.D.A. Forest Service, are monitoring the spread of the moth and the impact to koa forests.

Koa Moth Fact Sheet

Pest Portal Article