Tent caterpillars are a common pest in many regions, particularly in spring when their populations are high. Here’s what you need to know about them: Why Are Tent Caterpillars in Trees? Tent caterpillars are the larvae of various species of moths, most notably the Eastern tent caterpillar (Malacosoma americanum) and the Forest tent caterpillar (Malacosoma … Continue reading Tent caterpillars in your trees? What you can do!