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Genus Xylosandrus

Scolytine - Xylosandrus germanus Reddish bark beetle - Xylosandrus crassiusculus Asian Ambrosia Beetle - Xylosandrus crassiusculus - female Unknown Scolytinae - Xylosandrus germanus Xylosandrus crassiusculus ? - Xylosandrus crassiusculus Xylosandrus crassiusculus lateral view - Xylosandrus crassiusculus Reddish bark beetle - Xylosandrus crassiusculus Scolytini ? - 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
Explanation of Names
Xylosandrus Reitter 1913
4 spp. (of which 3 adventive) in our area, >50 total(1)
1.0–1.8 mm(1)
worldwide, mostly tropical but some range into temperate areas; in our area, the native species in CA, the introduced in se. US (X. germanus widespread)(1)
hosts: Acer, Ardesia, Calliandra, Carya, Cornus, Cupania, Fagus, Ficus, Fraxinus, Juglans, Myrica, Liriodendron, Phoradendron, Pinus, Prunus, Pyrus, Quercus, Serjania, Ulmus, Vitis(1)
The exotic spp. are becoming very common, and sometimes aggressively attack apparently healthy small trees(2)
Internet References
Works Cited
1.Mercado J.E. (2011) Bark beetle genera of the United States
2.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.