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Dryocosmus dubiosus

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Dryocosmus dubiosus
Photographed 2023 near Pacifica, California
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Cynipidae
Genus: Dryocosmus
Species:
D. dubiosus
Binomial name
Dryocosmus dubiosus
(Fullaway, 1911)

Dryocosmus dubiosus is an abundant species of cynipid wasp that produces galls on oak trees in California in North America.[1][2] Commonly known as the two-horned gall wasp, the wasp oviposits on the leaves and catkins of coast live oaks and interior live oaks.[1] After the eggs hatch, the resulting gall form looks like it has a set of bull's horns.[1]

According to the University of California center for integrated pest management, "Damage from the leaf-galling generation of two-horned oak gall wasps is often confused with damage from fungi that cause oak twig blight and certain beetles e.g., oak twig girdlers."[3]

References

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  1. ^ a b c Russo, Ronald A. (2021). Plant Galls of the Western United States. Princeton University Press. p. 89. doi:10.1515/9780691213408. ISBN 978-0-691-21340-8. LCCN 2020949502. S2CID 238148746.
  2. ^ "Two-horned Gall Wasp (Dryocosmus dubiosus)". iNaturalist. Retrieved 2023-10-23.
  3. ^ "Managing Pests in Gardens: Trees and Shrubs: Invertebrates: Two Horned Oak Gall Wasp—UC IPM". ipm.ucanr.edu. Retrieved 2024-03-05.