The TWiVsters reveal the puppet master: an RNA virus injected with wasp eggs that paralyzes the ladybug so that she protects the cocoon until the adult emerges.
The esteemed TWiVumvirate reveal the discovery of a new negative stranded RNA virus of wasps that regulates longevity and sex ratio of its parasitoid host.
The TWiV-osphere introduces influenza D virus, virus-like particles encoded in the wasp genome which protect its eggs from caterpillar immunity, and a cytomegalovirus protein which counters host restriction factors that prevent establishment of latency.
In their final episode of the year, the TWiV team reviews twelve cool virology stories from 2012.
Vincent, Dick, Alan, and Max Gottesman discuss an unusual wasp-virus symbiosis, influenza transmission and absolute humidity, how mosquitoes survive Dengue virus infection, and viruses of bacteria.