Photo 1. Characteristic damage done by the coconut rhinoceros beetle, Oryctes rhinoceros, showing V or wedge-shaped sections missing from the fronds eaten by the adults as they tunnel into the crowns of mature palms. (Solomon Islands)
Photo 2. Severe damage to young fronds by adult coconut rhinoceros beetle, Orytes rhinoceros. (Palau)
Photo 3. The damage from Orytes rhinoceros in Solomon Islands is so severe that palms are dying from the attack.
Photo 4. Close up of characteristic shape of fronds eaten by adult coconut rhinoceros beetle, Oryctes rhinoceros. (Palau)
Photo 5. Holes made by adult coconut rhinoceros beetle, Oryctes rhinoceros, in the base of fronds. Presumably, the holes were made when the leaves were much younger as the beetle tunnelled into the crown of the palm. (Palau)
Photo 6. Larvae of coconut rhinoceros beetle, Orytes rhinoceros, in a rotten coconut trunk. A favourite breeding site, especially in still standing but decaying palms (Fiji).
Photo 7. Larvae of coconut rhinoceros beetle, Orytes rhinoceros, under a log of unknown tree species.
Photo 8. Close-up of the larva of a coconut rhinoceros beetle, Orytes rhinoceros. Note that the C-shape grubs or larvae grow up to 100 mm.
Photo 9. The adult is jet-black, up to 40 mm long with a prominent horn. Both male and female beetles vary in size, and size cannot be used to distinguish the sexes.
Photo 10. Close-up of the head end of the coconut rhinoceros beetle, Oryctes rhinoceros. Male (right), female (left).
Photo 11. Underside of adult coconut rhinoceros beetle, Oryctes rhinoceros, to show the fuzzy group of hairs at the rear end of the female (left) compared to the male (right).
Photo 12. Close-up of the hind end of the coconut rhinoceros beetle, Oryctes rhinoceros. Female, with abundant hairs at the tip (left); male (right).
Photo 13. The grub or larva of a coconut rhinoceros beetle, Oryctes rhinoceros, infected by the fungus Metarhizium (Guam). The green areas are where the fungus is sporulating.
Photo 14. Trapping coconut rhinoceros beetle, Oryctes rhinoceros. Breeding sites are heaps of old fronds or other organic matter; they are covered by a gill net, and the beetles get caught in the mesh when entering or leaving the heaps.
Photo 15. Bucket traps for coconut rhinoceros beetles, Oyctes rhinoceros, with checken-wire covers and pheromone (Fiji).
Photo 16. Bucket traps for coconut rhinoceros beetles, Oyctes rhinoceros, placed above ground. About 2 m above ground is ideal.
Coconut rhinoceros beetle, rhinoceros beetle
Oryctes rhinoceros. Several strains are recognised. In Pacific islands
AUTHOR Grahame Jackson
Information from Waterhouse DF, Norris KR (1987) Biological Control Pacific Prospects. Inkata Press, and from Mark Schmaedick (2005). Cococnut rhinoceros beetle. Pests and diseases of American Samoa, Number 8. American Samoa College Community & Natural Resources Cooperative Research & Extension. Photos 7-10&12 Mark Schmaedick, Land Grant Program, American Samoa Community College. Photos 2,4,5,9&11 Joel Miles, Bureau of Agriculture, Republic of Palau. Photos 9,19&12 Mark Schmaedick, Entomologist, Land Grant Program, American Samoa Community College. Photo 13 Fred Brooks, University of Hawaii at Manoa. Photo 14 Aubrey Moore University of Guam. Photos 6&15-18 Nitya Singh, Ministry of Agriculture, Fiji.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
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