Yucca Moth

Yucca Moth, Tegeticula sp.

In finding a model for obligate mutualism and coevoluting species interactions, the yucca and yucca moth are a prime example. Over forty million years of a mutualistic partnership has led to an existence where each depends completely on the other for survival. The short-lived adult moth of the Tegeticula species does not have a tongue, but rather tentacles around its mouth. The female uses this feature for the purpose of collecting pollen and pollinating a different plant altogether. The plant she chooses depends on whether or not it is suitable for her offspring. By purposely cross pollinating the yucca, she ensures the flower will produce enough seeds and fruit for her larvae to feast upon once hatched. These larvae will form a cocoon underground, waiting to emerge the following spring with the blooming of the yucca.