![]() The beetle has since been detected in many neighborhoods on O‘ahu, and was detected on Kaua‘i in May 2023 where collaborative eradication efforts continue. The coconut rhinoceros beetle is a large scarab beetle that was first detected on O‘ahu in 2013. Adult beetles are about two inches long, all black and have a single horn on their head. Residents on all islands are asked to be vigilant when purchasing mulch, compost and soil products, and to inspect bags for evidence of entry holes. Adult coconut rhinoceros beetles prefer to feed on coconut and other larger palms, and are a major threat to the health of these plants. Reports of possible coconut rhinoceros beetle infestation may also be addressed to the Coconut Rhinoceros Beetle Response team at 80, email or the state’s toll-free Pest Hotline at 808-643-PEST (7378).Ĭoconut rhinoceros beetle grubs live in decomposing plant and animal waste and may have been inadvertently transported across O‘ahu and to neighbor islands in bags of compost or mulch. ![]() Residents are encouraged to go to the Coconut Rhinoceros Beetle Response website at: to learn more about how to detect the signs of coconut rhinoceros beetle damage, how to identify coconut rhinoceros beetle life stages, and how to report any suspected signs of damage or beetles/grubs via the coconut rhinoceros beetle reporting feature. Department of Agriculture staff are also trying to trace the origin and the pathway of the grubs found in Waikoloa. Surveillance for coconut rhinoceros beetle has been ongoing on all islands, including traps at airports, harbors and other strategic locations. A multi-agency team will continue to survey the area.Īdditional pheromone traps, used for early detection of infestations, are being deployed from Waikoloa Beach to Waimea, as well as other areas around the island. No other grubs or adult coconut rhinoceros beetles have been detected so far on Hawai‘i Island.ĭepartment of Agriculture crews on Hawai‘i Island and coconut rhinoceros beetle response staff from O‘ahu have surveyed the immediate area and have not found additional coconut rhinoceros beetle damage. On Wednesday of this week, the resident reported finding one more grub on the property. Staff from the Hawai‘i Department of Agriculture responded to the site and collected the specimens which were sent to a University of Hawai‘i laboratory in Honolulu where a DNA-based test was used to identify the grubs as coconut rhinoceros beetles. 11, the resident found five large grubs (larvae) in a decaying palm tree stump on the property and reported it to the Coconut Rhinoceros Beetle Response Project. ![]() This is the first discovery of the invasive beetle on the island. Coconut rhinoceros beetle grubs have been found at a residence in Waikoloa Village on Hawai‘i Island.
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