Andricus femoratus

Cynipidae

Amphibolips

Quercus hemisphaerica

Alabama

Arkansas

Florida

Georgia

Louisiana

Maryland

Mississippi

North Carolina

Pennsylvania

South Carolina

Texas

Virginia

Quercus incana

Oklahoma

Quercus laevis

Quercus laurifolia

Quercus marilandica

Delaware

Illinois

Indiana

Iowa

Kansas

Kentucky

Missouri

Nebraska

New Jersey

New York

Ohio

Tennessee

West Virginia

Quercus phellos

Connecticut

Cynipid galls of the eastern United States

Amphibolips femoratus (sexgen)

Andricus femoratus n. sp.

A small, very thin shelled globular gall, containing a larval cell held in place by fine radiating filaments; diameter 0.3 inch. Described from one specimen reared May, 1886 [On Quercus laurifolia]

On The Cynipidous Galls of Florida

Andricus femoratus

Q tinctoria [velutina], rubra. 

Globular, small, fibrous oak apple

FL, IN

An illustrated catalogue of American insect galls

Andricus femoratus

Globular, very thin-shelled leaf gall containing a fiber-supported cell, diameter 8 mm, on Q laurifolia.

Key to American Insect Galls

Andricus femoratus Ashmead 

Described from a female reared in Max from gall on Q. laurifolia from "Florida,'' the type is labeled Jacksonville. The writer collected galls on Q. laurifolia and phellos at Jacksonville, Daytona, Gainesville, River Junction, and Tallahassee and secured a couple of adults which emerged some time after April 7. 

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

Andricus femoratus

Quercus laurifolia, phellos
Leaf galls, detachable 
A small oak apple, 7.5 mm in dia., in spring. Type host [Quercus laurifolia]

[Photo caption]
On Q laurifolia. Also on Q phellos. The type was reared in May.

Amphibolips femoratus

On the basis of diagnostic characters given above, 6 species from the genus Andricus herein  are  transferred  to  Amphibolips: A. femoratus Ashmead,  1887,  comb. nov.

Review of the world genera of oak cynipid wasps (Hymenoptera: Cynipidae: Cynipini)

Additional hosts in subsection Phellos tentatively added based on unconfirmed observations:
[Quercus laevis](https://www.inaturalist.org/observations/74246227)
[Quercus incana](https://www.inaturalist.org/observations/74311459)
[Quercus hemisphaerica](https://www.inaturalist.org/observations/41049584)
[Quercus marilandica](https://www.inaturalist.org/observations/156444189)

Unlike [A quercusostensackenii](https://www.gallformers.org/gall/584), a similar gall found on other red-group oaks, femoratus rarely extends above the upper side of the leaf, and often makes a flat surface slightly sunken below the leaf, similar to the upper side of galls of [Amphibolips quercusrugosa](https://www.gallformers.org/gall/820).

Thompson's claim that this gall is found on Quercus rubra and velutina, which are not in subsection Phellos, is likely due to misidentification of [A quercusostensackenii](https://www.gallformers.org/gall/584).

Gallformers ID Notes