Cynipidae

Amphibolips

Quercus hemisphaerica

Alabama

Arkansas

Florida

Georgia

Louisiana

Maryland

Mississippi

North Carolina

Pennsylvania

South Carolina

Texas

Virginia

Quercus incana

Oklahoma

Quercus inopina

Quercus laurifolia

Quercus myrtifolia

Quercus phellos

Connecticut

Delaware

Illinois

Kentucky

Missouri

New Jersey

New York

Ohio

Tennessee

Cynipid galls of the eastern United States

Amphibolips spinosa (agamic)

Amphibolips spinosa n. sp.

Galls on the Laurel Oak (Quercus laurifolia)

Gall.— A small, brown globular gall, covered with prickles or spines; the shell is thick and covers with a slight spongy substance, a thin larval cell; diameter .30 inch. 

Described from one specimen reared in January. 

On The Cynipidous Galls of Florida

Amphibolips spinosa

Gall. On leaves of laurel oak (Quercus laurifolia). Brown, globular, covered with prickles or spines. The outer shell is thick and internally it is composed of a slight spongy substance, which surrounds the thin central larval cell. Diameter 7.50 mm.

Habitat: Florida.




The species of Amphibolips and their galls

Amphibolips spinosa

Spiny oak apple. Globose, spined, brown, thick-shelled leaf gall, internally slightly spongy, diameter 7.5 mm, on Q laurifolia. 

Key to American Insect Galls

Amphibolips spinosa

This species was described from one specimen from " Florida " reared in January, the gall on Q. laurifolia. The writer has found the gall on Q. phellos also and at the following localities : Jacksonville, Daytona, Live Oak, Madison, River Junction, Tallahassee, Gainesville, and Clearwater. Among galls collected on ground at Madison on October 21, 1919 some contained pupae but the adults never emerged. When the galls were cut open October 10, 1920 moulded adults, a pupa and a larva were found. These adults were females. 

Field notes on gall-inhabiting cynipid wasps with descriptions of new species

Amphibolips spinosa

Quercus laurifolia, phellos
Bud galls
Lemon-shaped. Collected on ground Oct to Feb. Type host.

[Photo caption]
On Q phellos. Also on Q laurifolia, cinerea [incana]. Collected on ground in Oct. Contained pupae Dec 5. 

Amphibolips spinosa Ashmead, 1887, sexual generation

Synonyms: Amphibolips spinosa Ashmead (1887: 141), females and galls. Amphibolips spinosus corrected spelling by Dalla Torre & Kieffer (1910: 591)

Biology. Alternate asexual and sexual generations are known. Asexual galls (Fig. 42) are ovate, about 10 mm long, in buds on Q. laurifolia and Q. myrtifolia. The sexual bud galls begin to develop in early May, mature in May-June, adults emerge in May through June. We recorded sexual galls on Q. myrtifolia, Q. laurifolia, Q. inopina and Q. incana. 

Distribution. USA: Florida, Highlands, Manatee, Martin, Walton, Liberty, Brevard Counties. We found this species also in North Carolina (Patsy Pond Area and Croatan National Forest, Carperet Co.).

Pairing of sexual and asexual generations of Nearctic oak gallwasps, with new synonyms and new species names (Hymenoptera: Cynipidae, Cynipini)

An externally similar gall was observed on Quercus imbricaria in [Ohio](https://www.inaturalist.org/observations/91472860). 

Quercus hemisphaerica added as a host based on its relationship with Quercus laurifolia and tentatively supported by this [observation](https://www.inaturalist.org/observations/87735383). 

Gallformers ID Notes