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

Ampelomyia viticola, new combination

induces conical leaf galls

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.

Cecidomyia viticola

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

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.

Cecidomyia viticola OS
Grape tube gall

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

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

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