Synanthedon scitula

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Synanthedon scitula (click on image to enlarge it)
Author(s): J.A. Davidson
Source: IPM Images

Synanthedon scitula (Harris, 1839) - (dogwood borer)

The borer is a pest of woody ornamentals and fruit trees in North America. The insect has a wide host range, which includes apple, hickory, pecan and oak. The larvae bore into trunks and branches of the trees. Infestations weaken the trees, shorten their lifespan and might cause death. On apple, the use of dwarfing rootstocks has increased damage by this pests. These root stocks often form "burrknots" which facilitates the entry of the borer (Kain et al. 2004).

S. scitula overwinters in the larval stage (e.g. in burrknots). The adult emerges around the beginning of summer. Control is difficult due to the cryptic life style of the larvae.

Vernacular names
• English: dogwood borer
• Français: sésie du cornouiller

For details see the respective page in BugwoodWiki.