Amphibolips acuminata

Fusiform Oak Apple Gall Wasp

Amphibolips acuminata is a of gall wasp in the Cynipidae, commonly known as the Oak Apple Gall Wasp. The species induces distinctive galls on oak trees, specifically forming fusiform (spindle-shaped) oak apple galls. As with other members of the Amphibolips, this species has an with distinct sexual and forms that produce different gall types. The species is associated with oaks in the genus Quercus and has been documented across a broad geographic range in North America.

Amphibolips acuminata by (c) Jeff Clark, some rights reserved (CC BY), uploaded by Jeff Clark. Used under a CC-BY license.Amphibolips acuminata by (c) Antoine Guiguet, some rights reserved (CC BY), uploaded by Antoine Guiguet. Used under a CC-BY license.

Pronunciation

How to pronounce Amphibolips acuminata: //æmˈfɪbəlɪps əˌkjuːmɪˈneɪtə//

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Habitat

Associated with oak forests and woodlands where trees in the Quercus occur.

Distribution

Documented across eastern and central North America; iNaturalist records indicate observations from the United States and Canada.

Host Associations

  • Quercus - gall induction for gall formation; specific oak associations require verification

Ecological Role

Gall inducer; modifies oak tissue to form protective structures for larval development. The galls provide and food resources for the larvae and may serve as microhabitats for other organisms.

Similar Taxa

  • Amphibolips quercusinanisBoth produce oak apple galls; differentiation requires examination of gall and specificity
  • Other Amphibolips speciesMany induce similar oak galls; precise identification often requires gall structure analysis and knowledge of oak

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Sources and further reading