Diuraphis noxia (Mordvilko)

Diuraphis noxia (Mordvilko)

   
Common names: Barley Aphid; Russian Wheat Aphid
Ethiopian name: Yegebs Kish Kish
   
Order: Homoptera
Family: Aphididae
   
HOSTS:  
Main hosts: Barley, Wheat
Alternative hosts: Other cereals, Grasses
   
IMPORTANCE IN ETHIOPIA:  
Major pest of: Barley, Wheat
Minor pest of: Tef
   
DISTRIBUTION IN ETHIOPIA:  
  A serious pest in the highlands at 2400 m above sea level and higher.
   
DAMAGE:  
  Infested plants show yellow streaks along the veins. The leaves curl inwards and the plants remain stunted. This species is known to be a vector of virus diseases. It is most serious in dry weather conditions.
   
INSECT BIOLOGY & RECOGNITION:  
Apterae: The length is 1.4 2.3 mm. They are pale yellow green or grey green and dusted with a white wax powder.
Alatae: The length is 1.5 2.0 mm. They have a pale green abdomen.
   
REMARK:  
  Several other species of aphids have been recorded on cereals in Ethiopia.

Text adapted from:

INSECT PESTS OF CEREALS IN ETHIOPIA identification and control methods by Hein Bijlmakers, FAO/UNDP Project ETH/86/029 Crop Protection Phase II, Addis Ababa, October 1989