Coconut Rhinoceros Beetle Information

Posted on Jan 15, 2014 in Main

Coconut Rhinoceros Beetle (adult)


Two coconut rhinoceros beetles have been found on Kauai near Lihue Airport around the Lihue Transfer Station in late May and early June 2023. This is the first detection of CRB outside of Oahu. Crews from the Coconut Rhinoceros Beetle Response Team have been deployed to Kauai to aid in the surveying of the area. The County of Kauai has closed the green waste facility at the Lihue Transfer Station until further notice.

Link to the news releases for more information:


The eradication efforts for the invasive coconut rhinoceros beetle continues on Oahu and residents are being asked to check their mulch piles and green waste for any breeding populations. In addition, mulch material should not be transported. Oahu residents are urged to call the CRB team for assistance at 808-679-5244. 

More information may be found in the news release below.


The public is asked to report CRB panel traps that may be blown down due to strong winds. Dislodged traps may be reported by either calling the CRB hotline at 808-679-5244 or by e-mail at: [email protected] . For more information, our website is .

More than 3,100 panel traps have been deployed around Oahu.




The Coconut Rhinoceros Beetle (CRB), a serious invasive pest, was detected on Dec. 23, 2013 on Joint Base Pearl Harbor – Hickam (JBPH-H) on coconut trees.

Since the detection, a joint effort between the U.S. Department of Agriculture (USDA), the University of Hawaii @ Manoa (UH), the U.S. Navy, the Hawaii Department of Agriculture (HDOA) and other partners have mobilized surveying, trapping and control efforts in the area where the beetle was found.  The Incident Command System (ICS) has been established to help manage the various agencies and activities needed to efficiently respond to this pest emergency.

Since it was initially detected at JBPH-H, CRB have been found at Barbers Point in May 2014, Campbell Industrial Park in July 2014, and Diamond Head in Oct. 2014.

CRB is a major pest of palms in India, the Philippines, the Palaus, Fiji, Wallis, Nukunono, American and Western Samoa and Guam. CRB is native to the Asian tropics, but was accidentally introduced to western and central Pacific islands. It is not known exactly how the beetles arrived in Hawaii.

CRB is mainly a pest of coconut and oil palms, but may also attack other palm species. Adult CRB are dark brown in color and measure 1 ¼ to 2 ½ inches long. CRB larvae are white in color with a brown head. (See photos below)

They damage palms by boring into the center of the crown where they injure young, growing tissue and feed on the sap. As they bore into the crown, they cut through developing leaves, causing damage to the fronds. V-shaped cuts in the fronds and holes through the midrib are visible as leaves mature and unfold.

Suspected CRB on coconut and palm plants on all islands should be reported to HDOA’s PEST HOTLINE – 643-PEST (7378). This is also a toll-free number for neighbor islands.

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Hawaii News Now – Sunrise – Oct. 29, 2014 – CRB Update

KITV News – Oct. 21, 2014 – CRB Found in Mililani

KITV News – Oct. 17, 2014 – CRB Found at Diamond Head

KITV News – Oct. 9, 2014 – Incinerators New Weapon in Beetle Battle

Stars & Stripes – Oct. 9, 2014 – Navy battling rhino beetles infestation at Hawaii base

Honolulu Star-Advertiser – Sept. 29, 2014 –  City Workers Learn to Kill LFA and CRB

Hawaii News Now – April 29, 3014 – Beetles Found Extends Buffer Zone

Honolulu Star-Advertiser – Feb. 21, 2014 – Navy Assisting in Beetle Eradication

Hawaii News Now – Feb. 20, 2014 – Hundreds of Beetles Captured

CNN – Feb. 9. 2014 – Meet the Beetles

KHON News – Feb. 4, 2014 Major Effort to Eradicate Coconut Rhinoceros Beetle

KITV News – Jan. 21, 2014 – Experts from Guam assist

Hawaii News Now Sunrise Morning Show w/ Howard Dicus – Jan. 14, 2014

Honolulu Star-Advertiser – Jan. 10. 2014

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CRB Pic Larva 2
Adult CRB Beetle CRB Larvae – often found in mulch piles
CRB Larval Instars CRB Feeding Damage 3
CRB Instars V-cut damage in palm leaves indicate CRB infestation
CRB Feeding Damage 3 Boring Holes
V-cut damage Holes bored in tree by CRB
Panel traps used to survey for CRB Panel trap in tree