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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

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Genus Xylosandrus

Xylosandrus germanus - female Asian Ambrosia Beetle - Xylosandrus crassiusculus Bark Beetle - Xylosandrus crassiusculus Borings Extruded by Granulate Ambrosia Beetles? - Xylosandrus crassiusculus Ambrosiodmus sp. - Xylosandrus crassiusculus Scolytinae - Xylosandrus germanus beetles boring out of golden rain tree: Koelreuteria paniculata - Xylosandrus germanus 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 Xyleborini
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.