Gouty Gall Wasps
Callirhytis punctata
Tiny cynipid wasps that create yellowish, irregularly round galls on oak twigs. These wasps have a complex two-year life cycle with alternating generations creating different types of galls.
Identification & Symptoms
What to Look For
Potential Damage
Lifecycle
Tiny parthenogenic wasps emerge from twig galls in May and June. Eggs are laid on undersides of leaf veins, hatching to cause small galls appearing as oblong blisters in late May-June. A generation matures in July with emergence of both male and female wasps. After mating, females lay eggs on young twigs. Galls form the following spring. Two or more years are required for young wasps in twigs to mature.
Professional Treatment Approach
Generally treatment not necessary due to minor impact
Prune and destroy heavily galled twigs if aesthetic concerns
Apply Imicide if severe infestations threaten tree health
Monitor for excessive gall formation on young trees
Maintain tree vigor with Arborfos to reduce susceptibility
Recommended Mauget Products
Imicide
Professional-grade treatment specifically effective against gouty gall wasps.
View Product DetailsArborfos
Professional-grade treatment specifically effective against gouty gall wasps.
View Product DetailsNeed Professional Diagnosis?
Our certified arborists can help you accurately identify tree problems and develop an effective treatment plan using Mauget's proven injection systems.