How to Manage Pests
UC Pest Management Guidelines
Aphids — General Considerations
(Reviewed 2/07, updated 2/07)
In this Guideline:
APHID SPECIES Key to identifying aphids
In addition to aphids described in this guideline, there are several other species that may be found on cereals throughout the year. Many occur in extremely low numbers and cause no damage. If, however, you encounter large numbers of an aphid or aphids that do not fit any of the following descriptions, please contact your farm advisor or county agricultural commissioner immediately. New species occur frequently, and your assistance in finding these is greatly appreciated.
The antennae are appendages arising one each from the side of the head and function as sense organs. The cornicles are tubular structures that arise one each on the side of the body near the rear end. The cauda is a structure resembling a tail that arises from the tip of the abdomen. Depending on species, it may be elongated, knobbed, triangular, or other shapes.
UC IPM Pest Management Guidelines:
Insects and Mites
L. D. Godfrey, Entomology, UC Davis
Acknowledgment for contributions to Insects and Mites:D. Gonzalez, Entomology, UC Riverside
C. G. Summers, Entomology, UC Davis/Kearney Agricultural Center, Parlier