Generally, when a tree is being swarmed by real wasps, what they are doing is hunting other insects, and usually it's gall insects that are emerging from the galls. As far as gall insects go ...

Galls are abnormal, tumor-like growths on oak trees created by gall wasps as a shelter for their larvae. Once the gall wasp larvae become adults, they eat their way out of the gall and fly away.

The two-horned oak gall wasp is just one of dozens of species of gall wasps that incubate their eggs in oak leaves. Skip to content. All Sections. Subscribe Now. 70°F. Sunday, June 8th 2025 ...

Ormyrus labotus parasitizes gall wasps, which lay their eggs on plants and induce them to form protective, swollen structures called galls around the larvae (a parasite, in a parasite!).

But leaf gall wasps are age-old associates of live oaks, The damage is unsightly, and may weaken the tree, but I've never heard of it killing one.The leaf gall wasp is one of the hundreds of ...

They are called galls. Oak galls are caused by gall wasps, a small cynipid wasp. The female wasp lays her eggs on the tree. This irritation causes the abnormal plant growth we ...

Cynipid: A member of the Cynipidae family, commonly known as gall wasps, many of which induce galls on plants. Phylogeny: The study of the evolutionary history and relationships among species.

The horns develop the second or third year after the gall maker's eggs are laid, when the wasps inside are nearing their full size. Eventually, one full-size adult wasp emerges from each horn.

Gall wasps, which belong to the family Cynipidae, do not sting. There are more than 700 species of cynipid gall wasps in North America and at least 90 species within the genus Callirhytis.

A comprehensive review of inquiline oak gall wasps provided an updated account of the New World species, including the description of three new taxa and a morphological key to distinguish the ...