![]() ![]() A fungus, Metarhizium anisopliae, from the Philippines is also used. Today, the key agent is a virus ( Oryctes rhinoceros nudivirus - OrNV) originally from Malaysia. Research into management of Oryctes started in the Pacific islands in the 1960s. Spread is on the wing, they are stronger flyers, and aboard ships and aircraft. They do not eat the frass from the tunnels instead, they drink the sap that comes from tunnelling. The beetles are nocturnal, flying to the tops of coconuts where they use their mandibles, horn and strong forelegs to tunnel into the crowns. Females live about 9 months, and lay about 50 eggs males live about 5 months. They are black with horns - those of the female often shorter than the male (Photos 9-12). The two pupal stages last 25-40 days.Īdults remain in the ground for 2-3 weeks and then chew their way out. The last stage makes a hollow where it feeds, lining it with liquid faecal material, and then pupates. There are three stages lasting 80 to 200 days (depending on quality of the diet), with the third stage up to 100 mm long and 20 mm diameter. ![]() The C-shaped larvae or grubs are white then creamy with brown heads (Photo 8). Logs and stumps of many other kinds of trees are also hosts (Photo 7). Oval eggs (3.5 x 4 mm) are laid one at a time, 5-15 cm, below the surface of moist organic materials, such as sawdust, manure, compost and garbage heaps, or above ground in tunnels, debris in axils of coconut fronds, in still-standing but dead and rotten coconut palms, and in the rotten ends of fallen coconut trunks (Photo 6). Holes in the base of the fronds may be obvious when beetle populations are high (Photo 5). When the leaves unfold the damage is seen as V or wedge-shaped areas missing from the leaflets (Photos 1-4). Please direct all inquiries and comments to insectidentification AT adult beetle does the damage, boring into the crown of coconut palms, cutting across young fronds and flowers. When emailing please include your location and the general estimated size of the specimen in question if possible. Images in JPG format are preferred with a minimum horizontal dimension of 1000px if possible. By submitting images to us () you acknowledge that you have read and understood our Site Disclaimer as it pertains to "User-Submitted Content". Material presented throughout this website is for entertainment value and should not to be construed as usable for scientific research or medical advice (regarding bites, etc.).Please consult licensed, degreed professionals for such information. This resource uses publically-released information. The logo, its written content, and watermarked photographs/imagery are unique to this website (unless where indicated) and is protected by all applicable domestic and international intellectual property laws. ![]() Lures and a pest hotline for reporting infestations are a step toward finding and eliminating this new North American destructive pest.©īeetle Identification Butterfly Identification Caterpillar Identification Spider ID Fungal Infections on Insects Nursery Web Spider Official State Insects Termite Basics Insect Molting Process Bugs of Tennessee House Other Pacific islands infested with the exotic beetle have used deliberate fungal and viral infections to kill adults and stop breeding. Efforts to find, control and, hopefully, eradicate it from the island are now underway. Exactly how the beetle arrived on the island is still unclear. The beetle has now been found on the island of Oahu in the state of Hawaii. It has done significant damage to coconut tree populations there. ![]() The Coconut Rhinoceros Beetle is native to Asia, but migrated to the Pacific Island of Guam sometime in 2007. The yellowish grubs are also large, growing up to 4 inches long. Coconut Rhinoceros Beetles are pests on a variety of other common island plants such as pineapples, bananas, papayas, dates and taro. This frond damage reduces coconut production and could kill younger trees. It then drinks the sap that is released by the plant's soft tissue. It bores holes into the young, upper fronds of coconut palm trees. An adult male has large horns while a female has smaller, shorter horns. The hefty Coconut Rhinoceros Beetle is large and black. ![]()
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