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Schizomyia viticola
No clue what these little red growths were... a fungus, maybe??
Try looking up information on various gall-causing flies and midges; I think you'll find these to be galls.
Grape Tomato Gall, Lasioptera vitis
Grape Blister Gall, Cecidomyia sp.
Grape Tube Gallmaker, Cecidomyia viticola Osten -Sacken