![]() ![]() However, flight is energy-intensive, and field observations suggest that when CRB have access to a preferred food source and breeding material, they likely won’t fly far. On Oʻahu, the first detections were near the airport at Mamala Bay.Ī: Studies have documented adult CRB flying up to 2 miles a day. CRB have since invaded the Pacific, including Guam, Palau, and Samoa.Ī: There is no certain path of invasion, but genetic information and pathway analyses suggest human-vectored spread from another Pacific Island. Q: Where did they come from? Where else are they?Ī: The CRB’s native range is in Southeast Asia, including India, Indonesia, and the Philippines. Q: Why haven’t I heard anything about CRB in the media lately?Ī: The CRB Response engages in press briefings following major developments. ![]() Treatments are approved for legal use in Hawaiʻi by the Department of Agriculture Pesticide Branch, and are only applied in accordance with the label and where it is intended to be used. The CRB Response is deploying products that contain imidacloprid, beta-cyfluthrin, and/or acephate in breeding sites and host trees in hot spot areas when appropriate and approved by the landowner. Q: Is there a pesticide treatment option for CRB?Ī: Pesticide treatments for CRB have been tested in the lab and field application trials. ![]() New treatments for palms and breeding sites are also showing promising results in reducing CRB populations. Public reports of CRB adults, larvae, damage, breeding sites, and adopting CRB green waste management guidelines all support efforts to eradicate CRB. Q: Is it possible to get rid of CRB on Oʻahu?Ī: The CRB Response is working to completely get rid of CRB in Hawaiʻi and we believe that it is possible with the cooperation of public and private entities. Learn more in our lookalike species blog. Please note that OFB breed in the same kind of material as CRB, so if you find OFB larvae, CRB may be nearby. Although they are a nuisance, their feeding does not seem to harm fruit and flower production. OFB feed on rotting or damaged fruits, and are widespread around Oʻahu. Q: What about the oriental flower beetle (Protaetia orientalis OFB)?Ī: OFB are also non-native but have less impact on the environment compared to CRB. Q: Why don’t you hang traps on coconut trees?Ī: We don’t want to attract beetles to their preferred food source, it is difficult to hang traps on coconut palms, and falling coconuts pose a hazard to our field technicians. CRB are unable to escape this trap because the cup is too slippery to climb and CRB wings are too wide to fly out. The adult beetle flies into the side panel and drops into the cup. If you are concerned about CRB, please consult our green waste management suggestions or contact us.Ī: Traps have a pheromone lure (a chemical substance that triggers a social response in the same species) that attracts CRB. A single trap will not protect palms in the vicinity or catch every CRB. Q: Why do I see the traps everywhere?Ī: The CRB Response monitors all of Oʻahu for CRB, using traps to identify where beetle populations exist and the size of those populations.Ī: Over 3,000 traps are deployed across Oʻahu in strategic locations, at higher concentrations in areas that are infested with CRB. The North Shore of Oʻahu has also seen an increase in detections. Most of the beetles are found in Central Oʻahu and the Waiʻanae Coast, ʻEwa Beach, Iroquois Point, Waipahu, Waikele, Mililani, and Kunia. Q: Where have coconut rhinoceros beetles been detected in Hawaiʻi?Ī: The CRB Response’s monitoring and trapping network has only detected CRB on select areas of Oʻahu. ![]()
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