Andricus brunneus, also known as the clustered gall wasp, is a species of oak gall wasp in the genus Andricus. It lives along the Pacific Coast of North America. Only females of this species are known.[1] Adults are brown or reddish-brown and about 3 millimetres (0.12 in) long.[2] It induces round galls on the leaves of white oaks, especially blue oaks.[2][1] These galls are usually found in clusters, reddish to light brown, and about 6 millimetres (0.24 in) in diameter. Each holds a single larval chamber, from which adult females emerge in autumn.[1]

Andricus brunneus
The galls induced by Andricus brunneus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Cynipidae
Genus: Andricus
Species:
A. brunneus
Binomial name
Andricus brunneus
Fullaway, 1911

References

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  1. ^ a b c Russo, Ronald A. (2021). Plant galls of the Western United States. Princeton, New Jersey: Princeton University Press. p. 276. ISBN 978-0-691-21340-8. OCLC 1239984577.
  2. ^ a b Fullaway, David T. (December 1911). "Monograph of the Gall-Making Cynipidae (Cynipinae) of California". Annals of the Entomological Society of America. 4 (4): 353–354. doi:10.1093/aesa/4.4.331.
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