Abstract

A granulosis virus was found infecting Plathypena scabra larvae in Iowa. The capsules averaged 377 ± 25 × 222 ± 19 nm. On the basis of light microscopical observations, the virus appeared to infect the epidermis, fat body, and tracheal matrix cells. The LC 50 and LC 95 were 6.7 × 10 7 and 1.5 × 10 9 capsules/acre, respectively. The LT 50 values varied from 3 to 9 days for 1 × 10 12 and 1 × 10 8 capsules/acre, respectively.

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