Diuraphis noxia

NameKingdom: AnimaliaPhylum: ArthropodaClass: InsectaBinomial Nomenclature: Diuraphis noxia

From Eurasia (central and western) Came to U.S. in 1986 Brought to Texas accidentally from

Mexico Can now be found in many western

states (California, Colorado, Nevada, etc.)

Map Of Distributionover all years

Mostly eats Wheat and BarleyMain economic effect: Farmers lose

money by losing crops and by buying pesticides

What Effects Has it Caused?(Ecosystems)

• To save money by not buying pesticides, types of flies have been introduced to stop the aphids

Food Web Wheat Wheat

Barley

SunSun

AphidAphidLadybug

Flies

Reasons For Success

• Many predators such as lady beetles are too large to enter the rolled leaves

•Reproduce Asexually and all are female

In The FutureAttempts to Stop the Menace

• Farmers can plant their crops early– Trade off- unanticipated weather

• Making sure plants are not under water stress– Trade off- might over water plants

• Not planting wheat or barley– Trade off- fewer wheat and barley for

us(consumers)

Infected Crops

• The Aphid injects a toxin into the plant while feeding and causes damage

• The leaves then get white longitudinal streaks

• The leaf then curls up

Different TypesDifferent TypesWinged (alate)- when the plant

dies several nymphs grow wingsThey seek a new host plantDark green thoraxWingless (apterous)- produce

many children Normal green thorax

• http://www.invasivespeciesinfo.gov/animals/rwa.shtml

• http://www.ipm.ucdavis.edu/PMG/r730300211.html

• http://www.ksre.ksu.edu/library/entml2/mf2666.pdf

• http://ces.uwyo.edu/PUBS/B1013.07.pdf