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Genus Xylosandrus

Xylosandrus compactus, lateral view - Xylosandrus compactus - female scoly - Xylosandrus crassiusculus Xylosandrus crassiusculus dorsal view - Xylosandrus crassiusculus Scolytinae - Xylosandrus germanus Small, reddish bark beetle - Xylosandrus crassiusculus X. compactus, mites - Xylosandrus compactus - female Scolytini ? - Xylosandrus crassiusculus beetles boring out of golden rain tree: Koelreuteria paniculata - Xylosandrus germanus
Classification
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
Numbers
4 spp. (of which 3 adventive) in our area, >50 total(1)
Size
1.0–1.8 mm(1)
Range
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)
Food
hosts: Acer, Ardesia, Calliandra, Carya, Cornus, Cupania, Fagus, Ficus, Fraxinus, Juglans, Myrica, Liriodendron, Phoradendron, Pinus, Prunus, Pyrus, Quercus, Serjania, Ulmus, Vitis(1)
Remarks
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.