Moths

 Today I attended a lecture about moths in Minnesota. Moths outnumber butterflies by a margin of 10 to 1 but butterflies get most of the attention. Most, but not all, moths fly only at night. Light can affect their travels. Like a moth to a flame, moths are attracted to out door lights that look yellow or orange. They are not attracted to the white light of a LED bulb. Male moths have fanned out antennae that are larger than the female antennae. That is because the males can smell or sense a female moth from seven miles away. The female moth's antennae are smaller and not fanned out. Females don't go looking for males. Instead, they just wait for the males to arrive. Female moths can carry one hundred eggs. When  laying eggs the female will lay all her eggs in one spot. After hatching from an egg, they will eat and grow. Moths will shed their exoskeleton 6 or 7 times until they are ready to form a cocoon. They eat so much as caterpillars that once they shed their cocoon they don't eat anymore. Moths don't have mouth parts. Moths live as moths for about a week. They live as caterpillars for two and a half months. Here in Winona County, in an effort to eradicate the spongy moth infestation, planes have been spraying pheromones that disrupt the males from finding the females. This pheromone affects all moths and butterflies and not just the spongy moth. So is it a good idea to spray the confusing pheromone? If we let spongy moths proliferate and there are no leaves on trees for the native moths to eat, well, that wouldn't be good either. Our speaker is an amateur entomologist and nature photographer. He spoke about three species of moths. One is the green luna moth which is my favorite because it is so pretty and green. I once saw one in the hull of a boat in the morning. The aluminum boat was pulled up on the shore of Rush Lake near New York Mills. Another moth he talked about is the crecopia moth which is beautiful with red spots. This last May I spotted a crecopia moth cocoon on a branch at the arboretum at Gustavus Adolphus in Saint Peter. The last moth he talked about is the polyphemus moth which is yellow in color. In closing he advised us not to rake up all our leaves in the fall. The crecopia moth will attach it's cocoon to a branch. The luna moth and the polyphemus moths attach their cocoons to leaves. If you rake and bag all your leaves you are harming the moth population. Now I feel bad about all those leaves I mulched with my mower and set in my compost piles.