Does your pin oak look like it’s breaking out in little bumps Those odd, round growths are called twig galls, and they’re ...

Not all wasp-shaped insects can do us harm. Gall wasps are a stingless species that create galls on trees and bushes where they grow from larvae into adulthood. So, now we know they won't hurt us ...

The balls taking space on the trees are eggs of Gall Wasps. Gall wasps are a small breed of wasps that lay their eggs in Oak and Pecan trees. Their eggs grow into the tree, leaving a hard capsule ...

Getty Images/iStockphoto These little balls are actually the home, so to speak, for a gall wasp. Adult gall wasps will inject a chemical into the leaf buds as they're forming, and these little ...

This particular gall infecting our laurel oaks is caused by the eastern horned gall wasp (Callirhytis quercusclaviger). The horn in the name is descriptive of the numerous small, horn-like ...

Twenty-two new species of gall wasps have been identified and named, thanks to new research. The study nearly doubles the number of known species in this genus of wasps. Twenty-two new species of ...

Native to the southeastern United States, this species lays its egg inside the tiny, wooden chambers that another parasitic wasp species, the gall wasp (Bassettia pallida), carves out in sand live ...

A second biological control agent is moving closer to entering the battle against the erythrina gall wasp to enhance survival of endemic wiliwili trees across Hawaii. Releasing the parasitoid will ...

Jane shares a new technique for tackling citrus gall wasp once and for all! In most parts of Australia, if you've grown citrus, you’re more than likely to have come across swollen galls on ...

The wasps come out of a “microhabitat” of “tumorlike growths” made by a gall wasp species that lives on oak leaves on the campus, according to the news release. Researchers collected the ...

The most peculiar cause of premature acorn drop that I have encountered is the acorn pip gall wasp. Native where oaks are present, this cryptic wasp goes mostly unnoticed. That is, unless your ...