AMBROSIA BEETLE

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Title: AMBROSIA BEETLE
Description: LATIN NAME: Xyloborus dispar (Fabricius) LIFE CYCLE: Overwinter as adults in host. Adults appear in April and after mating, tunnel into a host to lay eggs. Larvae are present May to July. New adults remain in host to overwinter. One generation per year. MONITORING: Tanglefoot or some other sticky material applied to the trunks may trap adults and indicate their presence. Ethanol-baited Lindgren Funnel Traps can also be used to detect adults. Look for small exit or entry holes (2mm). HOSTS: Native and cultivated trees. COMMENTS: Ambrosia beetles tunnel into heartwood causing brown strips of dead tissue in the cambium and discoloration in the heartwood. This contrasts to shothole borers that feed on the cambium, leaving a network of tunnels under the bark. BODY LENGTH: Adult - 3.0 mm; Mature larva - 4.0 mm.