Psyllids

Pest: Psyllid (Psyllidae)

Pest Type: Insect Pest

Major Identifying Features: Suck phloem sap and excrete honeydew, which promotes the growth of black sooty mold, some species also excrete pale wax or crystallized honeydew, adults are usually about 1/10 inch long and hold their wings roof-like over their bodies, when feeding, adults lift their bodies at a 45° angle from the plant surface, psyllids have short antennae, strong jumping legs, no cornicles

Life Cycle: Psyllids on deciduous trees overwinter as eggs or young nymphs in or around bud scales, in spring eggs hatch and nymphs feed on new growth, on evergreen trees all stages can be found year-round, high temperatures may reduce populations of some species

Pest Rating: Minor to moderate

Management Rating: Easy to difficult

Host/Season/Outbreak Information: Evergreen or deciduous shrubs and trees

Damage Information: High psyllid populations can reduce plant growth and cause premature leaf drop, certain species can cause terminals to distort, discolor, or die back, many native shrubs can deal with psyllid and don’t suffer from damage

Management Options: Cultural practices by choosing proper plants, replacing problem plants, avoiding over irrigation and fertilization, insecticides such as horticultural oils, neem oil, insecticidal soap, systemic insecticides in large trees is the best method

Sources:

Pests of Landscape Trees and Shrubs (Book)

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s