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TWIG GIRDLER
Fallen branches clipped from tree by adult TWIG GIRDLERS; immature beetles in branches.
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| Species |
Oncideres cingulata |
| Common Hosts: |
Australian pine Casuarina cunninghamiana
Hickories Carya spp.
Oaks Quercus spp.
Pecan Carya illinoensis
Pear Pyrus communis
Persimmon Diospyrus virginiana |
Description |
Adult -- approximately 15 mm long; grayish-brown body with scattered yellowish spots; antennae longer than body.
Larvae -- size variable, approximately 18 mm long when mature; dark brown head, yellowish-white body. |
Importance |
Severe infestations may weaken and distort the shape of ornamental and shade trees. |
Signs
of Infestation |
Foliage discoloration and hanging branches in tree crown. Severed branches on the ground; may be in circles around base of tree. |
Control |
- Collect and destroy branches on the ground - these contain the immature twig girdlers. Use an approved insecticide for high-value trees or those experiencing severe levels of damage by the twig girdler.
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Bulletin No. 196-A | Printed October, 1983 | Contact the
Forest Health Section 
