Bark Beetles

Curculionidae: Scolytinae

Bark Beetles is a bark- and phloem-associated beetle umbrella associated with conifers and broadleaf woody plants, especially stressed, storm-damaged, dying, or recently cut material. Feeding and galleries can girdle branches or trunks, disrupt phloem, and introduce blue-stain or pathogenic fungi. Not every bark beetle farms fungi. Act before internal protection develops.

Identification

Most bark beetles tunnel in inner bark or phloem. Gallery shape, pitch tubes, frass, host species, and adult morphology distinguish them from ambrosia beetles. Peel fresh bark around active pitch or frass and document gallery architecture. Identify the host and collect adults before assigning species-level management.

Symptoms / Signs

Feeding and galleries can girdle branches or trunks, disrupt phloem, and introduce blue-stain or pathogenic fungi. Not every bark beetle farms fungi. Old holes may outlast activity.

Life Cycle / Process

Bark Beetles undergoes complete metamorphosis. Egg placement follows the occupied site on conifers and broadleaf woody plants, especially stressed, storm-damaged, dying, or recently cut material.

Prevention

Maintain vigor, prevent injury, and remove active reservoirs. Priority reservoir for this record: conifers and broadleaf woody plants, especially stressed, storm-damaged, dying, or recently cut material.

Management / Control

Maintain tree vigor, remove storm-damaged wood, process logs rapidly, and use preventive bark protection only during documented adult flight.

Procedure Steps

1. Map the freshest holes, frass, wilt, flagging, sap, or branch decline. 2. Collect the larva, pupa, or adult with the damaged tissue. 3. Close the Bark Beetles incident only after new internal injury stops.

Safety Notes

Use exclusion and sanitation before considering trapping or lethal control. Protect children, pets, livestock, wells, public paths, and Myco-Patrons from devices, baits, droppings, and contaminated surfaces. Confirm current Florida and federal wildlife rules before capture, relocation, nest disturbance, or lethal action.