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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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Previous events


Genus Euwallacea

Wallacellus similis - Euwallacea similis Holly trees dying - Euwallacea validus bark beetle, Scolytini - Euwallacea validus Horned Powder-post Beetle? - Euwallacea validus Helmeted Beetle - Euwallacea validus introduced bark beetle - Euwallacea validus Euwallacea validus Curculionoidea – Curculionidae – Bark and Ambrosia Beetles - Scolytinae – Xyleborini  - Euwallacea validus
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 Euwallacea
Synonyms and other taxonomic changes
Although the name appears feminine, it was treated as masculine by Wood & Bright (1992) and by Bright & Skidmore (1997). Of the three species included by Hopkins, E. (Xyleborus) validus Eichh. has a masculine ending (the other species are E. wallacei and E. streblicola, invariable). Since no gender was specified, Euwallacea is not an originally Latin or Greek word, and there are a number of species of economic importance with names having masculine endings, we are invoking Art 30.2.3. and confirming it to be masculine.(1)
Explanation of Names
Euwallacea Hopkins 1915
6 spp. in our area (E. validus, E. interjectus, E. fornicatus, E. perbrevis, E. kuroshio, E. similis)(2), all adventive, 53 spp. total(3)
1.9-3.8 mm(3)
native to so. Asia and Oceania (rare in temperate e. Asia), adventive in NA(4): e. US (NY-FL-LA) & CA(3)
hosts: Albizia, Camellia, Hevea, Populus, Robinia, Shorea, Theobroma, Persea, Citrus, Punica(3); Large species breeding in tree trunks, small species often in twigs(4)
Internet References
Fact sheet by A. Eskalen(5)