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Helen Roy in China

Helen Roy in China

The native range of harlequin ladybirds (Harmonia axyridis) is China (where Helen Roy, Ph.D. is shown here), but they arrived in the U.K. more than a decade ago and now constitute about 80-90 percent of the ladybirds in urban areas of England. Although the beetles have few natural enemies in the U.K., some have recently been shown to be infected with a small, sexually transmitted fungus, Hesperomyces virescens. (Photo credit: Peter Brown)

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