The galls are created by the gall wasp laying its egg in a various part of the plant.
From the kidderminstershuttle.co.uk
Karen Sutherland and a kaffir lime with sticky labels to prevent gall wasp.
From the smh.com.au
The mealy oak gall wasp causes woody twig and stem galls on live oaks.
From the chron.com
The third structure is a deformity caused by the horned oak gall wasp.
From the kentucky.com
The hedgehog gall wasp triggers leaf galls with orangeish fuzz.
From the chron.com
Upon hatching, E. erythrinae larvae eat the gall wasp larvae.
From the sciencedaily.com
Oak apples are galls on oaks made by the gall wasp.
From the en.wikipedia.org
Soot, iron salts or tannic acid made from oak galls, the swellings on oak trees formed around gall wasp eggs, were mixed with gum and water to make ink.
From the telegraph.co.uk
How the gall wasp arrived in Hawaii in April 2005 is unknown, but it quickly found suitable hosts on which to feed and reproduce, first on Oahu and then other Hawaiian islands, notes Gates.