PestMedium Severity

Hackberry Psyllid

Pachypsylla spp.

Small jumping plant lice that feed on hackberry trees and cause various types of galls on leaves, twigs, and bark. These insects complete their development inside protective gall structures.

Peak Season: Adults emerge in spring, nymphs develop in summer galls, new adults emerge in late summer
View Treatment OptionsRecommended Products
Psyllid galls showing characteristic abnormal growths and small jumping insects typical of hackberry psyllid infestations

Identification & Symptoms

What to Look For

Abnormal growths (galls) on leaves and twigs
Small jumping insects on leaves and branches
Yellowing or distortion of affected leaves
Sticky honeydew deposits on foliage
Various gall types including nipple, blister, and button galls

Potential Damage

Aesthetic damage from numerous galls on foliage
Reduced photosynthesis in heavily infested leaves
Branch dieback in severe infestations
Weakening of tree vigor over time

Lifecycle

Adults overwinter in bark crevices and emerge in spring to lay eggs. Nymphs develop inside galls during summer, emerging as adults in late summer.

Professional Treatment Approach

1

Systemic insecticide applications in early spring

2

Horticultural oil treatments during dormant season

3

Remove heavily infested branches when practical

4

Maintain tree health through proper nutrition

5

Natural predators often provide control

Recommended Mauget Products

Imicide

Professional-grade treatment specifically effective against hackberry psyllid.

View Product Details

Imisol

Professional-grade treatment specifically effective against hackberry psyllid.

View Product Details

Dinocide

Professional-grade treatment specifically effective against hackberry psyllid.

View Product Details

Need Professional Diagnosis?

Our certified arborists can help you accurately identify tree problems and develop an effective treatment plan using Mauget's proven injection systems.

Schedule ConsultationUse Diagnostic Tool