image: This image shows Diachasma alloeum emerging from a puparium of its host, Rhagoletis pomonella. This image relates to an article that appeared in the Feb. 6, 2009, issue of the journal Science, published by AAAS. The study, by Dr. Andrew A. Forbes and colleagues, was titled "Sequential Sympatric Speciation Across Trophic Levels." view more
Credit: Image courtesy of <i>Science</i>/AAAS