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The Pleasures of Moth-Watching – The New York Times


Summer isn’t just butterfly season and tomato season, it’s also high moth season. And while you may think that a moth garden doesn’t sound quite as enchanting as a butterfly garden, I beg to differ. Thanks to guidance from some patient experts, these days you can call me the moth gardener.

Of course, as a longtime bird person, I also delight at seeing a diversity of butterflies. But moths are the mother lode by another order of magnitude — and how did it take me decades of being engaged with the outdoors before I knew that?

In all of North America, there are about 700 species of birds, and maybe 750 of butterflies. Moths number more than 11,000 species, with scientists regularly identifying more, particularly tiny micromoths.

Since my moth awakening, I have counted more than 175 kinds in my own garden, mostly after dark. Many are night flyers, which is why I was once oblivious to them.

Drawing you out into the dark is one of several ways that moths enrich life, if you embrace them. (Clothes moths or grain moths in the pantry — many people’s only experience of moths — are excepted from that embrace.)



The night garden is a whole different world, filled with organisms that use the cover of darkness as a tool to avoid predation. I think of these new companions — not just the obvious fireflies, but scarab beetles and caddisflies, giant millipedes and tiny, primitive bristletails and many others — as my garden’s night shift. Each is going about its business, in hopes of surviving to start a family.

Get to know an adult Pandorus sphinx moth, with its four-inch wingspan in green and pink, or a tolype, with its multiple mohawk hairdos, and you will never again feel the same about a munching caterpillar — the moth’s earlier, larval stage.

Caterpillars like the hickory tussock, a small black-and-white one covered in hairs called setae, looked like alien invaders to me until I identified them in David L. Wagner’s “Caterpillars of Eastern North America” and learned that they are a native species — and also that those urticating hairs can cause skin rashes.

Moths’ extra-special power: They will transform you into a citizen scientist, no binoculars required. In my case, an email also nudged me in that direction, from a sender I did not recognize.

“Can I have your data?” Dylan Cipkowski inquired, after establishing in the subject line that the topic was moths.

Mr. Cipkowski is a field biologist surveying the moths of Columbia County, N.Y., where I live, for the nonprofit Hawthorne Valley Farmscape Ecology Program. He had seen photographs I posted online — and apparently photos, when tied to dates and locations, equal data. It turned out I had data on more than 100 species, and counting.

Can you have my data? Well, of course.

I am now officially a data collector, no longer merely some madwoman wandering around in the dark with a camera. And being one has enriched my relationship with the place, and all of its creatures.

Both are in the order Lepidoptera — from the Greek for “scaled wings” — as they are covered in microscopic scales that serve various functions, including making escape from a sticky spiderweb possible. Losing a few scales beats losing your life.

Most moths have feathery antennae. Butterflies’ threadlike antennae are usually clubbed at the ends. At rest, moths generally hold their wings open, either flat or tented over their bodies; most butterflies hold theirs closed overhead.

A majority of adult butterflies draw nectar from flowers. Certain moths do, too. But at the other extreme, some moths (including silk moths like the luna, cecropia and polyphemus) do not feed in their short adult phase, focusing only on reproduction.

Some specialist moths feed on just one or two plant species, Mr. Cipkowski said, so when you see them you know that plant is around — like the turtlehead borer moth, whose larvae bore into the stems of the native perennial Chelone.

“The diversity of moths and butterflies is partially a reflection of a site’s botanical community,” he said. “It can work both ways: You can be in a particular vegetation zone and then see the moths — or see what the moth community looks like first, and get an idea of what the vegetation is.”

“Moths are everywhere,” the Peterson guide begins — which is particularly true on warm evenings, as far from light pollution as possible. The visitors you get will change throughout the season; different species have distinct flight periods.

Flipping on the porch light will attract some customers, but here’s a better way: Outdoors, on a wall or using rope, stretch a white cotton sheet within extension-cord range of an electric outlet. Plug in a clamp-on light socket fitted with an inexpensive CFL black light bulb. (A reminder: Light pollution at night is a major killer of insects, particularly moths, contributing to global insect decline, so if you have security lights, operate them on a motion sensor, or switch bulbs to yellow LEDs, which are less attractive to insects.)

Have a headlamp? Take a garden stroll, plotting a course for tubular flowers.

“A way to see the moths is looking at deep-throated flowers on summer nights, like Monarda, that the sphinx moths nectar at,” Mr. Cipkowski said. Phlox paniculata is another target.

The best part, he said: “If you have a headlamp on, you’ll see their eyeshine.”

You likely have caught larger glimpses of deer or raccoon eyeshine in the headlights, the work of specialized tissue called tapetum. This reflective surface behind the retina improves the odds that, in a lowlight world, essential visual information can be processed effectively, eye to brain.



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