Cephus cinctus
| Literature database |
|---|
| 79 articles sorted by: |
| • year (descending) |
| • research topics |
| • countries/regions |
| • host plants |
| • list of natural enemies |
Author(s): Willow Warren, Department of Agriculture Western Australia
Source: PaDIL
Cephus cinctus Norton, 1872 - (wheat stem sawfly)
The sawfly is an important pest of wheat in North America. The larvae live inside the stem, girdle and fell the plants. In a wheat field, infestation rates can exceed 50% and the percentage of cut stems 40%.
The adult female only lives for a week and lays its eggs, one at a time, into the stems of young growing wheat plants. Subsequent females may lay eggs into the same stem resulting in competition between the larvae.
The development of the larvae passes through 4-5 instars. The mature larvae move to the base of the stem, cut a notch into the stem, plug the stem and build an overwintering chamber in the stubble. The larvae pupate in spring and adults typically emerge in May to July.
| Vernacular names | |
|---|---|
| • Deutsch: | amerikanische Weizenhalmwespe |
| • English: | wheat stem sawfly |
| • Français: | cèphe du blé |
- Other images of Cephus cinctus (Wikimedia Commons and PaDIL - click to enlarge)
life cycle
female
male
male
head
head
head
head - ventral view
thorax
abdomen, female
abdomen, male
