The arrival of Hickory Tussock Moth caterpillars in our backyard is a signal of summer nearing it’s end as they become pretty active this time of year, feeding on the leaves of our white walnut tree. Their tufts of soft-looking, hairlike setae might encourage you or your children to want to touch them but resist the urge! These hairs have microscopic barbs that if they come in contact with your skin can cause a mild to severe allergic reaction. Yikes. I’m so glad that when I was taking photos of this one yesterday I heeded my Inner Girl Scout’s warning to look but do not touch.