<i>Dendrobaena</i> Cocoon (IMAGE)
Caption
The invasive worm Dendrobaena octaedra lays its tiny egg-like cocoons -- such as the 2-millimeter-wide cocoon shown here -- in leaf litter, where they are easily caught in the treads of car tires and carried from place to place.
Credit
Photo courtesy of Erin Cameron, University of Alberta
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