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For the United States & Canada
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Fall Fund Drive


Species Xylosandrus crassiusculus - Asian Ambrosia Beetle

Asian Ambrosia Beetle - Xylosandrus crassiusculus Asian Ambrosia Beetle - Xylosandrus crassiusculus - female Asian Ambrosia Beetle - Xylosandrus crassiusculus I used to know the genus for this scolytine... - Xylosandrus crassiusculus Asian Ambrosia Beetle - Xylosandrus crassiusculus Asian Ambrosia Beetle - Xylosandrus crassiusculus Xylosandrus crassiusculus dorsal view - Xylosandrus crassiusculus Reddish bark beetle - Xylosandrus crassiusculus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Scolytinae (Bark and Ambrosia Beetles)
Tribe Scolytini (Typical Bark Beetles)
Subtribe Xyleborina
Genus Xylosandrus
Species crassiusculus (Asian Ambrosia Beetle)
Other Common Names
Granulate Ambrosia Beetle(1)
Explanation of Names
Xylosandrus crassiusculus (Motschulsky 1866)
♀ 2.1-2.9 mm, ♂ 1.5 mm
native to E. Asia(2), adventive elsewhere, spreads by timber trade(1); in our area, e. US (MA-FL to MI-NE-TX) & ON(3)(2)
trapped most frequently during the spring [cite:185010]
polyphagous; hosts include members of 46 families (3)
Life Cycle
beetles attack the tree trunk and push the frass out of galleries in a distinctive toothpick fashion [cite:185010]
earliest record in our area: SC 1974(4)
Internet References
Featured Creatures - Atkinson et al. 2012
Works Cited
1.Alien terrestrial arthropods of Europe
Roques A., Kenis M., Lees D., Lopez-Vaamonde C., Rabitsch W., Rasplus J.-Y., Roy D., eds. 2010. BioRisk 4 Special Issue; 2 vols., 1028 pp.
2.New Curculionoidea (Coleoptera) records for Canada
Douglas H., Bouchard P., Anderson R.S., de Tonnancour P., Vigneault R., Webster R.P. 2013. ZooKeys 309: 13–48.
3.Atkinson T.H. (200_-2014) Bark and ambrosia beetles
4.Exotic bark and ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) in the United States: potential and current invaders
Haack R.A., Rabaglia R.J. 2013. In: Potential invasive pests of agricultural crops. Peña J.E., ed. CABI International, Wallingford, UK, pp. 48-74.