The movement of four plant viruses into the hemocoel of chrysomelid and coccinellid beetle vectors after ingestion was studied. None of the four plant viruses (two beetle-transmissible and two non-beetle-transmissible) were detected in the hemolymph of the Mexican bean beetle (Epilachna varivestis), an efficient plant virus vector in the family Coccinellidae, regardless of the acquisition source, type of virus, or method of virus detection. The infectivity of viruses was not destroyed by the hemolymph of the Mexican bean beetle, as demonstrated by virus survival in hemolymph for up to 3 days after virus injection into the hemocoel (...)
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R. Y. Wang (1992) studied this question.