Virus-transmission
Guides
Javesella
Javesella is a genus of delphacid planthoppers (family Delphacidae) established by Fennah in 1963, containing at least 20 described species. The genus is best known through Javesella pellucida, a significant agricultural pest and virus vector. Species in this genus exhibit wing dimorphism and are associated with grass hosts including cereals.
Psammotettix
Psammotettix is a genus of leafhoppers in family Cicadellidae, tribe Paralimnini. Species occur in Eurasia and North America. Several species are significant agricultural pests as vectors of wheat viruses, including Wheat dwarf virus and Wheat yellow striate virus. The genus includes both generalist and halophilic species.
Sitobion avenae
English Grain Aphid
Sitobion avenae, the English grain aphid, is a globally distributed pest of cereal crops. It feeds on phloem sap and transmits yellow dwarf viruses to wheat, barley, and oats. Population dynamics are influenced by temperature, water availability, and host plant quality. The species exhibits complex reproductive strategies including both cyclical and obligate parthenogenesis. Management challenges include insecticide resistance, variable biotypes, and climate change impacts on dispersal and adaptation.