BugwoodWiki Article

redbay ambrosia beetle
Xyleborus glabratus Eichhoff, 1877

Overview

Origin
Xyleborus glabratus is native to India, Japan, Myanmar, and Taiwan.
Life Cycle
Xyleborus glabratus adults are small, 0.08 in. (2 mm) long, slender, cylindrical, and brown-black in color. It is very similar to other members of the genus but the combination of its coloration, glabrous elytra, and abrupt declivity distinguishes it from other species (Mayfield and Thomas 2006). The larvae are white, c-shaped, legless grubs with an amber colored head capsule (Rabaglia 2005). A specialist should be consulted for positive identification of adults and larvae due to their similarity to other species. Adult females construct galleries in the sapwood and inoculate the galleries with a fungus (Ophiostoma sp., vascular wilt pathogen) (Mayfield and Thomas 2006, Rabaglia 2005). The adults and larvae feed on fungi and not on the wood of the damaged host plant. Females are believed to be able to fly 2-3 km in search of a host (Rabaglia 2005). Males are dwarfed, haploid, and flightless and are rarely encountered (Rabaglia 2005). Very little is known about the life cycle and biology of Xyleborus glabratus, but it is assumed to be similar to other species in the genus (Mayfield and Thomas 2006). Most of the life cycle takes place within the galleries, where beetles mate, lay eggs, and young develop.
Distribution
Xyleborus glabratus was first discovered in Georgia in 2002. It has spread to infect redbay and sassafras trees along coastal areas of Georgia, South Carolina and Florida.
Control Efforts
Never transport any part of an infected tree. Cut and chip the infected tree and leave it onsite or at least dispose of it locally. The Don’t Move Firewood campaign is aimed at slowing down the spread of this and other forests pests.

Resources

Selected Images


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1413003

redbay ambrosia beetle
Xyleborus glabratus
Adult(s)
Michael C. Thomas
1413004
1413004

redbay ambrosia beetle
Xyleborus glabratus
Adult(s)
Michael C. Thomas
5411465
5411465

redbay ambrosia beetle
Xyleborus glabratus
Larva(e)
Andrew Derksen
5411463
5411463

redbay ambrosia beetle
Xyleborus glabratus
Egg(s)
Karolynne Griffiths
5411462
5411462

redbay ambrosia beetle
Xyleborus glabratus
Egg(s)
Karolynne Griffiths
2199088
2199088

redbay ambrosia beetle
Xyleborus glabratus
Damage
Albert (Bud) Mayfield
2109039
2109039

redbay ambrosia beetle
Xyleborus glabratus
Galleries
James Johnson
2110016
2110016

redbay ambrosia beetle
Xyleborus glabratus
Damage
James Johnson
2110018
2110018

redbay ambrosia beetle
Xyleborus glabratus
Damage
James Johnson
2199081
2199081

redbay ambrosia beetle
Xyleborus glabratus
Feature(s)
Albert (Bud) Mayfield
2199082
2199082

redbay ambrosia beetle
Xyleborus glabratus
Feature(s)
Albert (Bud) Mayfield
5383214
5383214

redbay ambrosia beetle
Xyleborus glabratus
Symptoms
Ronald F. Billings

Taxonomic Rank

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Atelocerata
Class: Hexapoda (including Insecta)
Infraclass: Neoptera
Subclass: Pterygota
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Superfamily: Curculionoidea
Family: Curculionidae
Subfamily: Scolytinae
Tribe: Scolytini: Xyleborina
Genus: Xyleborus

Other System Links

NPDN Pest: INBQRHA

Categories

Category: Boring Insects
Category: Fungus Feeding Insects - Mycophagous