white-lined sphinx moths

Nature

On the crawl: Why so many caterpillars are wriggling around Arizona

Kelsey Shaw and her two children pick up large yellow and green caterpillars just off the Bush Highway near Saguaro Lake. The children have no hesitation handling these nearly 2- to 3-inch-long caterpillars, letting them crawl all over their clothes. Shaw and her children were preparing to spend the morning picking up litter along the

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