Abstract
The smaller tea tortrix larvae, Adoxophyes fasciata, are susceptible to a granulosis virus which is pathogenic to the fat body. Electron micrographs revealed the sequence of virogenesis and encapsulation in fat cells of infected larvae. The size of the virus rod was approximately 305nm in length and 70nm in width, while the ellipsoidal capsule had a size of 500-540nm in length and 250-280nm in width. Abnormally shaped capsules were occasionally found among normal capsules and infected cells containing only abnormal capsules were also found. Few infected cells, packed with a great number of immature virus rods and no capsules were detected in a late stage of infection, suggesting that defects in synthesis of virus and capsule proteins had occurred in the host cells.
