Tag Archives: silver-spotted skipper

July’s Prairie Patterns

“The world is a confusing and turbulent place, but we make sense of it by finding order… . This makes us all pattern seekers. “– Philip Ball

*****

High heat and cool breezes; thunderstorms and calm mornings. From my hammock overlooking the backyard prairie patch, I’m astonished at the rapid growth of plants under the hot sun, watered by frequent rain showers. I swear I saw cup plants grow an inch right before my eyes! Anything seems possible in the bright light and blue skies of July.

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As I swing in my hammock, I’m reading a new book from University of Chicago Press: Patterns in Nature.  It’s a revelation. As an art and journalism student in my undergrad years, I avoided math as much as possible. Now, I’m discovering the beauty of mathematics on the prairie. Symmetry. Fractals. Surface tension.

So many different combinations of patterns in July! I’ve always been intrigued by patterns in nature. But I didn’t understand much about what I saw.

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Paging through Philip Ball’s book, I begin with symmetry, which Ball says, is at the root of understanding how patterns in nature appear.

It’s an eye-opener.

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Ball notes that “Bilateral symmetry seems almost to be the default for animals. Fish,  mammals, insects, and birds all share this attribute.” I see this in the blue-fronted damselfly above; in the mirror-image wings of a skipper butterfly below. Divide them in half and each side is essentially identical.

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It’s evinced in the reversed haploa moth, barely visible, deep in the tallgrass.

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There is bilateral symmetry in a bison’s skull, with a few imperfections.

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Or a monarch’s wings, even when tattered and worn.

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Who wouldn’t marvel at the folded, paired symmetrical wings of the male violet dancer damselfly?

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Once you begin looking for patterns in the natural world…

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…you see them everywhere.

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Fractal geometry, Ball writes, is said to be “the geometry of nature.” Fractals? What’s a fractal?  “Don’t know much algebra…,” sang Sam Cooke in his classic, “(What a) Wonderful World.” Yup. But I want to know more.

Ball boils it down to this: Look at a tree. A part of the tree, he writes, can resemble the whole, as the “tree algorithm” keeps making the same kind of structure repeatedly. As I hike the prairie one afternoon, I look up and all of the sudden it makes sense—once I understand what I’m looking at.

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“Growing fractals”  are a type of fractal found in the network of arteries, veins, and capillaries in the vascular system—another “branching” effect, Ball tells me. I think of the “arteries” running across prairie dock leaves, so pronounced in the autumn.

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I reflect on these concepts and my head aches. Fractals. Symmetry. So fascinating. So…complex. I regret now my ability to dodge everything math-related in college except for a course called “Cardinal Numbers.” A sort of 101 math for art majors. But maybe it’s not too late?

Early one morning, wading Clear Creek at Nachusa Grasslands, I admire the dew drops. I remember reading in Ball’s book that beads of water are driven by surface tension. Simply put, he says, surface tension pulls dew and rain into these “droplet” shapes, and gravity helps flatten the droplets. Ahhh. Look at that. Yes.

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A different sort of pattern. I search for water droplets: on leaves, spiderwebs, even dragonfly wings. Each dewdrop has heightened meaning.

As I continue reading, chapter after chapter, then go for hikes to explore the different patterns in Ball’s book, his simple explanations for a non-scientist open up a new world for me. A world where math seems a little more applicable. A little more accessible. A little more…meaningful. Perhaps, though, the best moment in Ball’s book  is when he writes that the law of pattern formation is driven by wonder.

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“We need to marvel and admire as well as to analyze and calculate,” Ball writes. Oh, yes. I’ve always been attuned to wonder; marveling comes without effort for me. Now, I’m learning the other side of the equation. Such an astonishing world!

So many “patterns” to marvel at and admire in the month of July on the prairie. Why not go see?

******

Philip Ball is the former editor for Nature. The quotes in this post are from his book, Patterns in Nature: Why the Natural World Looks the Way it Does (University of Chicago Press, 2016). Check it out here.

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All photos copyright Cindy Crosby (top to bottom): July on the Schulenberg Prairie, The Morton Arboretum, Lisle, IL; monarch caterpillar (Danaus plexippus) on butterflyweed (Asclepias tuberosa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; blue-fronted dancer damselfly (Argia apicalis), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; silver-spotted skipper (Epargyreus clarus), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; reversed haploa moth (Haploa reversa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; bison (Bison bison) skull, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; monarch butterfly (Danaus plexippus) on rattlesnake master (Eryngium yuccifolium), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; violet dancer (sometimes called variable dancer) (Argia fumipennis violacea), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; gray-headed coneflower (Ratibida pinnata) seedhead, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; orb weaver (family Araneidae) spider web, Brown County State Park, Nashville, IN; tree leafing out on the edge of the Schulenberg Prairie, The Morton Arboretum, Lisle, IL; prairie dock (Silphium terebinthinaceum), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; water droplets along Clear Creek, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; glade mallow (Napaea dioica), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.

Cindy’s Classes and Speaking

August 2, 8-11:30 a.m., Prairie Ethnobotany: How People Have Used Prairie Plants Throughout History, The Morton Arboretum, Lisle, IL. Register here.

August 12, 7-8:30 p.m., Dragonflies and Damselflies: The Garden’s Frequent Fliers, Fox Valley Garden Club, Aurora, IL. Free and open to the Public. Details here.

August 19-22, 8-5 p.m. daily, National Association for Interpretation Certified Interpretive Guide Training, The Morton Arboretum, Lisle, IL. Register here.

August 29, 7-8:30 p.m., Summer Literary Series: Tallgrass Conversations: In Search of the Prairie Spirit. Hope aboard the Morton Arboretum’s tram and enjoy a cool beverage, then listen to Cindy talk about the “prairie spirit” on the beautiful Schulenberg Prairie, the fourth oldest prairie restoration in the world. Register here.

See more at http://www.cindycrosby.com

Prairie All-Stars

“In baseball, you don’t know nothing’.” — Yogi Berra

***

If there’s one thing you learn on a prairie, it’s that the more you begin to know about the bugs, blooms, and grasses, the less you realize you know. And the more you realize you don’t know, the more you want to know about what you don’t know.

Whew.

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Bees, for instance. They’ve always been flying around, sort buzzing in the background of the prairie. But not on my radar. Until I started paying attention to bees this season. This one turned up as I was wading a stream this week, looking for dragonflies. At least—I think this is a bee. Interesting “raft!”

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I looked up, hip-deep in creek water, hoping to see the former owner of the feather.  The only bird in sight was this kingfisher. Hmmm…doesn’t seem to match.

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Back to the bees. Or is this a bee look-alike? I look at the markings on the head, the tuft of fur behind the, um—neck? Is that the right term?—and the patterns as seen from topside. I still am unsure. So many native bees and non-native bees! So many bee look-alikes! The mind boggles.

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The sunflower this bee is busily investigating is the woodland sunflower, Helianthus divaricatus. At least, I think that’s what the flower is. Does anyone else find the sunflower family confusing? Later, I asked the bee researcher, who was shoulder-deep in the sunflowers, if he knew which species it was. He shrugged.

Made me feel better.

So many All-Star prairie wildflowers.

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And don’t get me started on the skippers. For my birthday this month, my wonderful husband gave me a terrific pair of close-focus binoculars and an out-of-print guide to Illinois skippers—all 59 local species. They’ve both helped. But even the skippers on the prairie seem astonished by their own complexity.

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Silver-spotted skipper? I think so. The field guide says they are pretty common. But it’s going to take me a while to get a handle on the skippers and butterflies in my little corner of the world. At least there is no “question” about the identity of this beautiful butterfly.

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This week, I’m teaching “Dragonfly and Damselfly ID.” It’s guaranteed to be an exercise in humility. No matter how many of the dragonfly and damselfly species that I know—and I’ve learned quite a few over the past 13 years as a monitor—it’s a good bet there will be some oddball that shows up and doesn’t fit any description of a damselfly I’ve seen before. The meadowhawks are particularly confusing at this time of year. This one below is likely an autumn meadowhawk because of the yellowish legs.

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Likely. I’m pretty sure—at least, I think that’s what she is. However, there are red meadowhawk dragonflies zipping all over the prairie, and their immature counterparts which are yellow-ish, and the females which are sort of gold, and it all begins to blend together. Their red counterparts are even more confusing. Cherry-faced meadowhawk? Ruby meadowhawk? White-faced?

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I think I see some reflected amber patches on the leaf. So I check the field guide— most of the red meadowhawks have them. My “unknown meadowhawk dragonfly” column on my data sheet is getting bigger each week.

For my class, I’ll hope for the old familiar favorites, like the male calico pennants with their row of luscious red “hearts” in a row down their abdomen.

Unmistakable.

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And back to those wildflowers. Wow! They keep me up at night, flipping through plant ID websites, dipping into Flora of the Chicago Region, trying to understand what it is that I’m seeing and how it fits into the community we call prairie. Nachusa Grasslands, where I’m a dragonfly monitor, has more than 700 plant species! How do you wrap your head around that?

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What a beautiful problem to have, isn’t it? So many “All-Stars” on the prairie. So much to discover. Whenever I get frustrated at all there is to learn about in the tallgrass—and marvel that I’ve learned anything at all—I take a moment to sit on the bridge over Willoway Brook and be quiet.  Clear my head.

As I reflect, I realize what I don’t know doesn’t matter as much as showing up. Listening. Thinking about what I see.

Being there.

*****

Lawrence Peter (Lorenzo Pietro) “Yogi Berra” (1925-2015) was an 18-time All-Star professional baseball catcher, coach, and manager. He was part of teams that won the World Series 10 times—more World Series wins than any other professional baseball player to date. Berra and his wife Carmen were married for 65 years which is another great record. He is known for his paradoxical sayings such as the one that begins this post. Check out more “Yogi Berra-isms” here, and find a smile for your day because, as he says, “It ain’t over until it’s over.” And, remember, Berra also told us, “I never said most of the things I said.”

All photos and video clip copyright Cindy Crosby (top to bottom): July at Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; bee on a feather, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; kingfisher (Megaceryle alcyon) over Clear Creek, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; unknown bee on woodland sunflower (Helianthus divaricatus), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; July wildflowers, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; silver-spotted skipper (Epargyreus clarus), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; question mark (Polygonia interrogationis), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; autumn meadowhawk dragonfly (Sympetrum vicinum), Nachusa Grasslands, Franklin Grove, IL; unknown meadowhawk dragonfly (Sympetrum), Nachusa Grasslands, Franklin Grove, IL; calico pennant dragonfly (male) (Celithemis elisa) Schulenberg Prairie, The Morton Arboretum, Lisle, IL; Nachusa Grasslands in July, The Nature Conservancy, Franklin Grove, IL; video clip of bridge over Willoway Brook in July, Schulenberg Prairie, The Morton Arboretum, Lisle, IL.

Prairie Fireworks

“Everything is blooming most recklessly… .” — Rainer Maria Rilke

***

It’s been said that the most beautiful day for prairie wildflowers is the Fourth of July. True? Take a look.

The purple prairie clover blooms are alive with insect scurry and motion.

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Dragonflies are zipping around the ponds! The bullfrogs call, creating a soundtrack to a muggy July morning.

 

These four froggies keep an eye on any dragonfly that gets within tongue-zapping distance.

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Nearby, a tiny eastern amberwing dragonfly is laying her eggs. She taps her abdomen into the pond vegetation, ensuring a future generation.

 

 

 

Close up, you can see how intentional her motions are.

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Deep in the grasses, her mate’s wings glint gold in the sunshine.

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Such an explosion of gold on the prairie in July!

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Interesting insects float and perch on the blooms and in the tallgrass.

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A silver spotted skipper sips nectar from a common milkweed flower.

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An American painted lady, interrupted in her search for nectar, gives me the eye.

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The vervain flowers remind me of a lavender sparkler. The butterfly’s outer wing’s painted “eyes” don’t dispel my feeling of being watched, so I move on and leave her in peace.

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Bursts of pink and purple are part of the prairie palette in early July. But if you’re in the mood for some flag-waving colors on the Fourth, you can find red in the tiny bugs…

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…white in the thimbleweed blossoms…

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…blue? A blue grosbeak is a rare treat. Perfect for the holiday.

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The tallgrass explodes with color; dazzles with motion.

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No doubt about it. Even on the Fourth…

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The prairie has the best fireworks of all.

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The opening quote is from Rainer Maria Rilke (1875-1926), a mystical poet and novelist. Letters to a Young Poet is among his best-known works, which includes these famous lines: “Be patient toward all that is unsolved in your heart and try to love the questions themselves, like locked rooms and like books that are now written in a very foreign tongue. Do not now seek the answers, which cannot be given you because you would not be able to live them. And the point is, to live everything. Live the questions now. Perhaps you will then gradually, without noticing it, live along some distant day into the answer.”

 

All video clips and photos copyright Cindy Crosby (top to bottom): unknown bee on purple prairie clover (Dalea purpurea), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; video clip of ponds, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; four American bullfrogs (Lithobates catesbeianus), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; video clip of female eastern amberwing (Perithemis tenera) dragonfly laying eggs, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; female eastern amberwing (Perithemis tenera) dragonfly, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; male eastern amberwing (Perithemis tenera) dragonfly, Schulenberg Prairie, The Morton Arboretum, Franklin Grove, IL; wildflower mix with black-eyed Susans (Rudbeckia hirta), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL;  blue dasher dragonfly (Pachydiplax longipennis) female, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; silver spotted skipper (Epargyreus clarus) on common milkweed (Asclepia syriaca), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; American painted lady (Vanessa virginiensis) on blue vervain (Verbena hastata), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL (two images); unknown red insect on false sunflower (Heliopsis helianthoides), International Crane Foundation Prairie, Baraboo, WI; thimbleweed (Anemone cylindrica), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; blue grosbeak (Passerina caerulea), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; prairie wildflowers in July, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; great angelica (Angelica atropurpurea), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL.

Flight Through the Tallgrass

“For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.” –Leonardo da Vinci

The summer sky tumbles her clouds. The prairie whispers, “flight.”

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So many ways to reach new heights on the prairie in August. So many ways to take to the skies.

Butterflies drift through the air like colorful leaves. The tiger swallowtails take frequent snack breaks.

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Silver skippers pause, dwarfed by the grasses now shooting skyward, considering their options.

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Some prairie inhabitants fly only as far as a hop and a jump.

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While others will travel distances limited only by the imagination.

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Yet, as satisfying as it is to take to the air, it’s wise to find shade where you can. The blazing prairie sun offers no relief.

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The zips and zags of dragonflies dazzle. When one dragonfly comes to rest on a budded blazing star, you can’t help but admire her intricate wings, those complex eyes.

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So much is unfolding on the prairie in August.

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You sense everything is moving in a new direction.

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Time is flying. Will you be there, in the tallgrass?

 

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You’ll be amazed at what you see…

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…if you make time to look.

 

*****

The opening quote is by Leonardo DaVinci (1452-1519), perhaps the most diversely gifted person in history. Among his many interests was flight; he created plans for flying machines and studied the flight of birds.

All photos copyright Cindy Crosby: (top to bottom) big bluestem (Andropogon gerardii) against the August sky, Belmont Prairie Nature Preserve, Downer’s Grove, IL; eastern tiger swallowtail butterfly (Papilio glaucus), St. James Forest Preserve, Warrenville, IL; silver-spotted skipper (Epargyreus clarus), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  green frog  (Lithobates clamitans), St. James Farm prairie area, Warrenville, IL;  American goldfinch(Spinus tristis), St. James Farm, Forest Preserve of DuPage County, Warrenville, IL;  great horned owl (Bubo virginianus), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  female blue dasher dragonfly (Pachydiplax longipennis)) on rough blazing star (Liatris aspera)  Belmont Prairie Nature Conserve, Downer’s Grove, IL;  Indian grass unfolding, (Sorghastrum nutans), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  old weather vane, St. James Farm, Forest Preserve of DuPage County, Warrenville, IL;  vehicle at Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; female eastern pondhawk (Erythemis simplicicollis ), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.