Wood Acres Tree Specialists MD, DC, VA
call for tree service-1-888-464-3926
10315 Kensington Parkway, Kensington MD 20895-3358
Leaf Notes Blog
Tree & shrub care services
General Tree Work:
Plant Health Care:

Pine Webworm

Ronald F. Billings, Texas Forest Service, Bugwood.org
 Pococera robustella (Zeller) - Damage    The pine webworm feeds on and lives in pine trees across the eastern United States. It usually chooses young seedlings but can infest saplings and larger trees. The eating habits of the larvae causes a loss of needles but this rarely leads to tree mortality. The defoliation can affect tree growth, especially on very small trees.

Between May and September, adult pine webworm moths mate and lay eggs on the needles of a host tree. The eggs hatch weeks or months later depending on the temperature and season. After the larvae hatch, they construct a mass of silken webbing among the pine needles and deposit solid excrement called frass.

Usually one to two larvae inhabit a single webbing mass but as many as 25 larvae can live in a mass on some occasions. The larvae's main food source is the surrounding pine needles. The larvae mature and then drop to the ground where they pupate underneath the soil, forming an oval cocoon like covering. Again temperature and season determine the amount of time the webworm spends in the pupae stage. When that stage does end, the webworm emerges, transformed into an adult moth.
Pro-active tree & shrub care
Insect & Tree Pest Index Tree & Shrub Disease Index Tree & Shrub Damage Index Monthly Plant Health Care Report
Tree & Shrub Care info
Maryland Aborist Association   Tree Care Association Accreditation   ISA Certified Master Arborist ISA Certified Arborist
Maryland Arborist
Tree Care Industry
International Society
of Arboriculture
Master Arboist
On Staff
Copyright © 2010-2018 Wood Acres Tree Specialists - All Rights Reserved