Schizomyia viticola

Cecidomyia lituus

Cecidomyia vitislituus

Cecidomyia vitis lituus

Cecidomyia viticola

Cecidomyiidae

Ampelomyia

Vitis labrusca

Alabama

Connecticut

Delaware

Georgia

Illinois

Indiana

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Utah

Vermont

Virginia

West Virginia

Wisconsin

New Brunswick

Nova Scotia

Ontario

Vitis riparia

Arkansas

Colorado

Iowa

Kansas

Minnesota

Missouri

Montana

Nebraska

North Dakota

Oklahoma

Oregon

South Dakota

Texas

Washington

Wyoming

Manitoba

Quebec

Saskatchewan

Vitis vulpina

Florida

Key to American Insect Galls

Ampelomyia viticola

Cecidomyia viticola, n. sp.

Elongated, conical, red galls, 0.25 to 0.3 long; on the upper side of the leaves of the grape. On the 16th of July, when I found them, they contained pale orange larvae, the breast bone of which had two points anteriorly, with several small indentations between them. The tip of the body ended in two curved, horny points, directed upwards. 

Monographs of the Diptera of North America

Cecidomyia viticola OS

The upper surface of grape leaves is frequently found to be more or less covered with nail-like galls about one-third of an inch long. The galls are reddish or crimson in color, shading to green. The parent insect is a small midge, or gnat, resembling the preceding species, and the larva or grub within the gall is pale orange in color. This species is not sufficiently abundant to require treatment. 

Insect and fungous enemies of the grape east of the Rocky Mountains

Cecidomyia viticola

Vitis
Leaf or tendril galls
Elongate, conical, reddish or greenish leaf gall, length 6 to 9 mm. 

Cecidomyia viticola OS
Grape tube gall

Vitis
Leaf or Tendril Galls
Conical, reddish or greenish leaf gall, length 1/4 inch, midge, summer

Plant Galls and Gall Makers

Schizomyia viticola

Vitis
Complex, woody, node gall or dehiscent spine gall on leaf

The spinelike galls usually occur on the leaves and are monothalamous. S viticola comes from leaf galls. All the galls vary in shape and hairiness.

Range: eastern half of North America

The plant-feeding gall midges of North America

...taken from a tubular leaf gall on *Vitis* sp. August 13, 2009.

[note: Reported as "*Schizomyia viticola* (Osten Sacken 1862)"]

The Gall Midges (Diptera: Cecidomyiidae: Cecidomyiinae) From Allegheny County Pennsylvania

Ampelomyia viticola, new combination

induces conical leaf galls

Ampelomyia, a new genus of Schizomyiina (Diptera: Cecidomyiidae) associated with Vitis (Vitaceae) in the Palaearctic and Nearctic regions, with description of a new species from Japan