Cynips quercusfolii · obuoliškoji gumbavapsvė «Cynips quercusfolii · obuoliškoji gumbavapsvė^Thumbnails»Neuroterus quercusbaccarum · kekiškoji ąžuolinė gumbavapsvė«Cynips quercusfolii · obuoliškoji gumbavapsvė^Thumbnails»Neuroterus quercusbaccarum · kekiškoji ąžuolinė gumbavapsvė«Cynips quercusfolii · obuoliškoji gumbavapsvė^Thumbnails»Neuroterus quercusbaccarum · kekiškoji ąžuolinė gumbavapsvė

Cynips quercusfolii · obuoliškoji gumbavapsvė

  • cherry gall wasp
  • Gemeine Eichengallwespe
  • obuoliškoji gumbavapsvė, ąžuolinė gumbavapsvė
  • ozolu ābolveida panglapsene
  • galasówka dębianka
  • ekäpplegallstekel

Cynips quercusfolii is a small black gall wasp. Agamic galls are cherry galls on the leaves of some species of oak. The galls are large and succulent, 15 to 25 mm in diameter, smoother on Quercus robur or more warty on Quercus petraea; yellow-green suffused with pink or red, and later dark red then brown with a thick walled chamber. They persist on fallen leaves over winter.

The sexual gall is on buds, and is ovoid and with a velvety surface. The agamic cherry galls are a similar size to the common marble gall (Andricus kollari) but these form from buds, not on a leaf. There are several similar bud galls on oak.

https://en.wikipedia.org/wiki/Oak_apple Oak apple gall (cecidia) · ąžuolo rašalinis riešutėlis: Oak galls have been used in the production of ink since at least the time of the Roman Empire. From the Middle Ages to the early twentieth century, iron gall ink was the main medium used for writing in the Western world. Gall nuts are a source of tannin in the production of iron gall ink. The reaction between the tannins from and the iron (iron sulfate) produces a complex that gives the iron gall its color.

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