1.Distribution Cosmopolitan pests,distributed in Asia, Europe and North America; >Sitodiplosis mosellana favors warm environment.Mainly occur in wheat growing areas of valleys of Yellow River and Huai River in 31-35 N.in China. >Contarinia tritici prefers cool environment. Mainly distributed in wheat growing areas of alp and altiplano
¾ Cosmopolitan pests, distributed in Asia, Europe and North America; ¾ Sitodiplosis mosellana favors warm environment. Mainly occur in wheat growing areas of valleys of Yellow River and Huai River in 31-35°N. in China. ¾ Contarinia Contarinia tritici tritici prefers cool environment prefers cool . Mainly distributed in wheat growing areas Mainly distributed in wheat growing areas of alp and of alp and altiplano altiplano. 1. Distribution 1. Distribution
2.Damage Oligophagous pests.Severely damage wheat,barley, highland barley wild oat(青稞)，rey,oat and some weeds; *Larvae damage to wheat flowers and sucking of the sap of milking wheat kernels causes wheat plants to produce non-rich grains.Generally,the amount of damage is abundant.When severe damage occurs,the loss is almost 100%. 幼虫危害小麦花器和吸食正在灌浆的小麦籽粒的浆液，造成瘪粒而 减产，受害严重时几乎毁产
Oligophagous pests. Severely damage wheat, barley, highland barley wild oat (青稞), rey, oat and some weeds; Larvae damage to wheat flowers and sucking of the sap of milking wheat kernels causes wheat plants to produce non-rich grains. Generally, the amount of damage is abundant. When severe damage occurs, the loss is almost 100%. 幼虫危害小麦花器和吸食正在灌浆的小麦籽粒的浆液，造成瘪粒而 减产，受害严重时几乎毁产。 2. Damage 2. Damage
Sitodiplosis mosellana
Sitodiplosis Sitodiplosis mosellana mosellana
Taken by Junxiang Wu in Xushui,Hebei,2003
Taken by Junxiang Wu in Xushui, Hebei , 2003
Taken by Junxiang Wu in Xushui,Hebei,2003
Taken by Junxiang Wu in Xushui, Hebei , 2003