Mothing

Blurry Chocolate Angle
Blurry Chocolate Angle

“Chancing to take a memorable walk by moonlight some years ago, I resolved to take more such walks, and make acquaintance with another side of Nature.” – Henry David Thoreau

The mothing began without intention, the frontdoor light left on by chance. Going out well after dark with the dog, I noticed several moths on the side of the house near the light and had the wherewithal to capture several of them. Thereafter, following this serendipitous beginning, the light was left on deliberately, becoming something of a nightly ritual throughout the autumn months.

Not long after the mothing commenced, I purchased a copy of Discovering Moths: Nighttime Jewels in Your Own Backyard by John Himmelman. I enjoyed this book immensely, reading it cover-to-cover in a matter of days. Himmelmann does a really great job of passing along his enthusiasm for moths. The line drawings, the mini-biographies of Lepidopterists and other mothing folk, the seasonal presentation of the mothing year, and the color plates provided the thorough introduction to this group of insects that I needed. And it was in this book, in its discussion of mothing equipment, that I came upon the suggestion of using a bug-zapper as a mothing light.

Now, the bug zapper is truly a repugnant invention. The one and only insect pest it purports to annihilate, the mosquito, is not attracted to light. What smokes and settles in a heap beneath the powered-up machine is a wide variety of beneficial insects, non-biting midges and moths making up a large percentage of the kills. The fact that they are marketed nowadays with chemical lures to attract mosquitoes I take to be an admission of their ineffectualness. In my opinion, bug zappers should be banned and taken off the market. A consequence of their ineffectualness, however, is that used ones are available very cheap. And, using a few simple tools and some electrical tape, the high-voltage grid can be disarmed and the remaining UV light repurposed as a moth light.

This new set up, the now-benign bug zapper hung at the top of our white garage door, provided a marked increase in the attendance of moths. Once or twice a week, if the weather cooperated, I’d set up the light, turn it on, and wait. I’d go out at dusk and then a number of times after that, eventually turning the light off at some point well after midnight to let the moths go about their business…and not rouse too much curiosity about my behavior among our neighbors.

Vagabond Crambus Moth
Vagabond Crambus Moth

My daughter took to helping me (any excuse to stay up late…right!) and became very adept at catching the moths. Most of the moths were small and could be captured in vials. After capture, the moths went into the refrigerator for the night. In the morning, once the sun was up, they were photographed and released. Usually, the refrigerated moths would sit for some time while they warmed up, allowing me to take dozens of photos. The smaller the moth the less time you have—the ratio of surface area to body volume playing a part in how fast they warmed. The micro moths flew almost as soon as I popped the top on the plastic vial, so I don’t have many successful photos of these tiny moths. My daughter also enjoys all the curious names that moths have been given, as do I. Here’s a sampling: The Wedgeling, The Asteroid, The Deceptive Snout, The Ambiguous Moth, Blurry Chocolate Angle, Hitched Arches, The White Speck.

Our shiny Peterson Guide to moths, purchased in 2012 and barely used, was finally getting some use. At first, with little knowledge whatsoever about moths, the number and variety was simply bewildering. It had taken me several years to get familiar with the hundred or so local dragonflies, the local moths, on the other hand, numbered in the thousands! Himmelman’s book provided an in. And two online resources, bugguide.net and the moth photographers website, provided the added information and assistance needed to begin making identifications of some of the moths. A look at all the moths captured (nearly 250 photos) can be had by visiting my Flickr site and looking at the moth set. Many remain unidentified, and many have question marks appended to tentative identifications, so please feel free to leave corrections or identification suggestions.

Wavy-Lined Heterocampa Moth
Wavy-Lined Heterocampa Moth

A third excellent online resource is the Butterflies and Moths of North America website (BAMONA). The BAMONA website checklist for Rice County lists (at the time of this post) only eleven species. Over a period of three months, late in the year, missing the spring species and many of the summer species, I collected and photographed well over seventy different kinds of moths just in our driveway. Eventually, as time permits, I’ll submit my sightings to BAMONA. That there is a long way to go in documenting the moths of Rice County can be demonstrated by looking at the numbers of species for a better surveyed county. For instance, Wright County, northwest of Rice County, has 280 species on its list.

So, with more work to do and more discoveries to make, I’m looking forward to spring, and the commencement of a new mothing season. I’m also hoping to graduate to the more traditional white sheet this spring. And, if time permits, maybe try some other locations around the state. Who knows, I might even organize a mothing event for National Moth Week, July 19 – 27, 2014. Yes, there’s a national moth week…how cool is that!

White-lined Sphinx Moth
White-lined Sphinx Moth

Resources & Links

David Beadle & Seabrooke Leckie. Peterson Field Guide to Moths of Northeastern North America. Houghton Mifflin Harcourt. 2012.

John Himmelman. Discovering Moths: Nighttime Jewels in Your Own Backyard. Down East Books. 2002.

Moth Photographers Group

bugguide.net

Butterflies and Moths of North America

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