Neolasioptera vitinea

Vitis
Woody, elongate-tapered swelling of tendrils, petioles, or midveins

Swellings are 5-15 mm long, and several may occur in tandem. Larvae live along the pith. One generation occurs per year, the adults emerging from the galls in spring.

Range: New England to Virginia, west to MO

Schizomyia petiolicola Felt was reportedly reared from a tapered stem swelling attributable to Neolasioptera vitinea but I have never seen Schizomyia larvae in these galls.

Lasioptera vitinea, n. sp.

Bred June 15, 1907 from a leaf petiole gall on grape, taken on Staten Island, NY

Neolasioptera vitinea Felt

The midge was reared June 15, 1907 from a conical petiole gall on grape, collected on Staten Island, N. Y. The gall is quite common in the vicinity of New York City, also at West Nyack, N. Y. It was found on Isabella grape by Mrs M. Archer Shee, Highland Falls, N. Y., and taken on grape at Albany, N. Y. The species was reared by the late Dr M. T. Thompson, Worcester, Mass., and presumably at Washington, D. C, as specimens dated April 28, 1888 are in the collections of the National Museum. Trichasis virginiensis Ashm. was reared from this gall.

Gall (pl. 3, fig. 2). This is an obpyriform or slightly curved conical petiole gall on grape. The enlargement is about 1.5 cm long and .5 cm in diameter. Each gall contains 2-4 larvae in along central chamber.

Neolasioptera vitinea

Vitis
Leaf or tendril galls
Reared from similar gall [Oval, petiole or tendril gall, length 2.5 cm, swelling mostly distant from the base.], swellings mostly basal.

Schizomyia petiolicola [assumed to be synonymous, at least as a gall (fly may be distinct, possibly an inquiline), based on Gagne 1989]

Vitis
Leaf or tendril galls
Oval, petiole or tendril gall, length 2.5 cm, swelling mostly distant from the base

Neolasioptera vitinea Felt
Lasioptera riparia Felt
Asteromyia petiolicola Felt
Schizomyia petiolicola Felt
[Felt lists these as 4 distinct species inducing an identical gall but they are now considered likely either synonyms or inquilines of N vitinea]

Vitis
Leaf or Tendril Galls
Oval petiole or tendril gall, length 3/8 inch, midge, summer

Cecidomyia sp.

Vitis
Leaf or Tendril Galls
Cylindrical petiole gall, length 3/4 to 2 inches, midge, summer

ex leaf petiole gall on Vitis sp.