Ambrosia Beetle Damage

May be confused with

Some species of bagworms have small perpendicular larval structures that are superficially similar to the frass plugs of ambrosia beetles. The frass plugs are rather crumbly, whereas bagworm "bags" are rather tough.

Cause

Ambrosia beetles (Xyleborus spp. and Platypus parallelus) burrow into the trunks of presumably stressed palms where they feed on the ambrosia fungi that they cultivate.

Occurrence

Ambrosia beetles are cosmopolitan in distribution.

Additional comments

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Last updated May 2015

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