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Family Byturidae - Fruitworm Beetles

Raspberry Fruitworm Beetle - Byturus unicolor unknown tiny beetle - Xerasia grisescens beetle - Byturus unicolor Beetles - Byturus unicolor - female Byturidae, Byturus unicolor? - Byturus unicolor Xerasia grisescens? - Xerasia grisescens Gold Fuzzy Beetle - Byturus unicolor Santa Cruz 03
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 Cleroidea (Bark-gnawing, Checkered and Soft-winged Flower Beetles)
Family Byturidae (Fruitworm Beetles)
Synonyms and other taxonomic changes
until recently treated in Cucujoidea
Explanation of Names
Byturidae Gistel 1848
2 spp. in 2 genera in our area(1), 24 spp. in 7 genera total(2)
2.5-5.5 mm
Fine, dense vestiture. Dorsum gently convex. Eleven antennomeres, last three forming club. Pronotum wide as elytra at back, narrowing toward head, which is narrower than pronotum.
holarctic & Oriental(3); in our area, Byturus unicolor e. NA (NF-NT-AK to GA-TX), Xerasia grisescens w. US(1)(4)
Adults feed at a variety of flowers. Larvae often in native fruits, or in oak galls in the case of Xerasia grisescens.
Works Cited
1.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.
2.Order Coleoptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Ślipiński S.A., Leschen R.A.B., Lawrence J.F. 2011. Zootaxa 3148: 203–208.
3.Coleoptera, Beetles; Morphology and Systematics vol. 2
Richard A.B. Leschen, Rolf G. Beutel and John F. Lawrence. 2010. De Gruyter.
4.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.