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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Xerasia grisescens

Xerasia grisescens (Byturidae) - Xerasia grisescens Xerasia grisescens (Byturidae) - Xerasia grisescens tiny beetle - Xerasia grisescens tiny beetle - Xerasia grisescens Chrysomelid? - Xerasia grisescens Wolly Beetle #2 - Xerasia grisescens Brown Hairy Beetle 2 - Xerasia grisescens Small brown beetle - Xerasia grisescens
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)
Genus Xerasia
Species grisescens (Xerasia grisescens)
Synonyms and other taxonomic changes
Byturus grisescens
Explanation of Names
Xerasia grisescens (Jayne 1882)
4-5 mm(1)
throughout w. NA just about anywhere oaks occur(1)
associated mainly with oaks (Quercus); in CA, from sea level to >7000 ft, from wet coastal locations to very dry areas like Carrizo Plain(1)
Adults feed mainly on fungi associated with the trees, though some may feed on oak pollen as well(1)
Life Cycle
Adults emerge during the cooler winter months, and may be abundant through the spring(1)
among the most common of all California's beetles (1)
Internet References