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Dryocosmus minusculus

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North American gall-inducing wasp

Dryocosmus minusculus
Galls induced by Dryocosmus minusculus, Coyote Valley Open Space District, San Jose, California, 2017
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Cynipidae
Genus: Dryocosmus
Species: D. minusculus
Binomial name
Dryocosmus minusculus
Weld, 1952

Dryocosmus minusculus is an abundant species of cynipid wasp that produces galls on oak trees in California in North America. Commonly known as the pumpkin gall wasp, the wasp oviposits on the leaves of Quercus agrifolia, Quercus wislizenii, and Quercus kelloggii. In spring and summer, larvae induce round galls reaching 1 mm across. Fresh galls are pale with darker centers. Adult wasps emerge the following spring.

References

  1. ^ Russo, Ronald A. (2021). Plant Galls of the Western United States. Princeton University Press. p. 96. doi:10.1515/9780691213408. ISBN 978-0-691-21340-8. LCCN 2020949502. S2CID 238148746.
  2. "Pumpkin Gall Wasp (Dryocosmus minusculus)". iNaturalist. Retrieved 2023-10-23.

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