Products your Coconuts and Palms From the Rhinoceros Beetle Lure

Coconut rhinoceros beetles (CRB) are a major pest of coconut trees and fan palms, but they can feed on other palms (including royal, date, and foxtail palms) and even plants like hala, kalo, sugarcane, and pineapple. Even if you are familiar with CRB damage to coconut trees, damage looks different on other palms and host plants.

Adult CRB bore into the crowns of trees, leaving behind 1.5 - 2” boreholes. This exposes the plant to secondary pests and diseases, decreases growth and production, and significant CRB feeding damage can kill the plant. Palm fronds will show damage after the feeding event occurs, but the exact damage pattern and time it takes to emerge will vary depending on the type of palm. Damage to palms is an alert to possible CRB infestation and breeding activity nearby. This guide covers which plants to inspect for signs of CRB and other factors that can cause similar symptoms.

CRB damage to coconut trees first appears as 2” boreholes at the crown of the tree. Weeks or months later, after the immature frond unfurls, the tree will show evidence of CRB feeding with v-shaped cuts. Damage to inner fronds indicates more recent feeding, and damage to outer fronds indicates feeding from several months prior.

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