Eumayria multiarticulata

Cynipidae

Eumayria

Quercus buckleyi

Kansas

Oklahoma

Texas

Quercus coccinea

Alabama

Arkansas

Connecticut

Delaware

Georgia

Illinois

Indiana

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

Missouri

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Vermont

Virginia

West Virginia

Wisconsin

Quercus falcata

Florida

Quercus ilicifolia

Ontario

Quercus incana

Quercus laevis

Quercus laurifolia

Quercus marilandica

Iowa

Nebraska

Quercus myrtifolia

Quercus phellos

Quercus rubra

Minnesota

New Brunswick

Nova Scotia

Prince Edward Island

Quebec

Quercus velutina

American gallflies of the family Cynipidae producing subterranean galls on oak

Cynipid galls of the eastern United States

Eumayria floridana (sexgen)

Eumayria floridana n. sp.

[Described from adult only, captured in March]


On The Cynipidous Galls of Florida

Eumayria floridana Ashmead.

Eumayria multiarticulata (gall only)

Gall. On the roots of laurel-leaf oak (Quercus laurifolia). Polythalamous. Hard, rounded and composed of many hard larval cells. 

Habitat: Florida. 

The types are in the United States National Museum and one male and one female are in the collection of Mrs. A. T. Slosson

Some North American Cynipidæ and their Galls

Eumayria floridana Ashmead

Eumayria mutiarticulata

Doctor Ashmead described a root gall on Quercus laurifolia Michaux in 1887 in Transactions American Entomological Society (vol. 14, p. 133) as Eumayria multiarticulata. Later in the same paper he described Eumayria floridana, male and female, without gall, from five specimens taken at large in March, 1SS7, in Florida. In the old Ashmead collection at the United States National Museum are three male flies with the label "Jacksonville, Florida," and bearing a white label with the word "type." These are evidently of the original five. The American Entomological Society probably has another one. In the Museum collection, however, probably years later, he placed a red label with "U.S.N.M. Type 2883" on a gall which answers the description of multiarticulata and also on a female fly and accessioned them as Eumayria floridana. Both bear the "U.S. D.A. No. 2647" and are from Georgiana, Florida. With these are 37 other females all bearing the same number. The emergence dates are April 12, 13, 19, 20, 25, 27, and May 3, 1882. Pinned in case with them is a slip with name " Eumayria multiarticulata, " showing that as that name had been applied only to gall, he wished to call the species floridana and wished the large series of reared flies to be included in the type series for in the type book he wrote "many types." Whether there were any males in the reared series or any females in the captured series is not known. The writer has reared both males and females from galls collected at Jacksonville, Florida, and these agree with both sexes in the Museum, so that there is no doubt that the Museum material belongs to one species. 

As Ashmead 's description of the adults was very brief, the following notes are added from the type material in the Museum: 

Gall. — Photographed from galls on Quercus catesbaei Michaux collected at Jacksonville, Florida. In the late fall the galls contain a thick translucent nutritive layer in each cell. They should be collected in the spring for rearing. 

Host. — It was described from Quercus laurifolia Michaux. The writer has collected galls on nine other species of oak, as shown below. 

Habitat. — From Quercus catesbaei at Ocala and Jacksonville, Florida, galls were taken and adults of both sexes reared that agree with the types in the United States National Museum. They were collected April 21 and April 25, 1914, and the flies emerged and died in the box before August 10. Galls of this species and on this host were seen at Green Cove Springs, Ocala, Madison, and Gainesville, Florida. Galls have been taken, but no flies reared from the following oaks: 

Q. rubra Linnaeus at Ravinia, Fort Sheridan, Highland Park, and Evanston, Illinois. 

Q. coccinea Wangenheim at Millers, Indiana, and Evanston, Illinois. 

Q. velutina Lamarck at Hot Springs, Arkansas. 

Q.falcata Michaux at Gainesville, Florida. 

Q. texana Buckley at Boerne and Kerrville, Texas. 

Q. marilandica Muenchhausen at Mineola, Texas, and Hot Springs, Arkansas. 

Q. brevifolia Sargent at Marianna and Ocala, Florida. 

Q. myrtifolia Willdenow at Carrabelle and Daytona, Florida. 

Eumayria floridana

Quercus catesbaei [laevis], cinerea [incana], coccinea, falcata, ilicifolia, laurifolia, marilandica, myrtifolia, rubra, texana [buckleyi], velutina
"Root" galls
Abrupt rounded mass with botryoidal surface, up to 25 mm in dia, at surface of ground on sprouts.

[Photo caption]
On Q catesbaei [laevis]. Also on Q coccinea, rubra, velutina, ilicifolia, falcata, cinerea [incana], myrtifolia, texana [buckleyi]. Adults emerged Apr 12-May 3 (FL).

Eumayria floridana Ashmead

Eumayria floridana Ashmead
Eumayria multiarticulata Ashmead 

Distribution.--IN, IL, AR, TX, VA, FL

Biology.--Only a bisexual generation is known. Induces stem-swelling galls at the base of young sprouts of Quercus coccinea, falcata, ilicifolia, incana, laurifolia, myrtifolia, rubra, texana [buckleyi], velutina. Adult emerge in May through August. 

SYNONYMY OF TWO GENERA (EUMAYRIA AND TRISOLENIELLA) OF CYNIPID GALL WASPS AND DESCRIPTION OF A NEW GENUS, EUMAYRIELLA (HYMEN0PTERA: CYNIPIDAE) 

Eumayria floridana (Ashmead 1887)

Hosts: Quercus myrtifolia

[Sexual generation root galls found in Florida in the spring.]

Using gall wasps on oaks to test broad ecological concepts

Quercus phellos added tentatively as a host based on [this unconfirmed observation](https://www.inaturalist.org/observations/94265367). 

Gallformers ID Notes