Tag Archives: midge

Backyard Prairie Reflections

 “Tomorrow is forever, and years pass in no time at all.”–Mary Lawson

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Thunderstorms move through the Chicago region, offering blessed relief for prairies and backyard gardens. The cracked concrete earth soaks up the rain; fuel needed for seed creation and the last pumps of blooms ahead. You can feel the relief in the air.

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Pumpkin spice latte signs appear in coffee shop windows. The afternoon light slants lower; a little pixelled, a little grainy.  In stores, school supplies jostle with unicorn costumes and Halloween candy for shelf space. The first school buses cruise the streets, slowing traffic. Where did summer go?

Late summer and fall wildflowers show up: snakeroot, New England aster, goldenrod, blue vervain, boneset.  There is a last flush of swamp milkweed in the wetter areas.

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Green darner dragonflies move in clouds over the tallgrass; sometimes with black saddlebags and wandering glider dragonflies mixed in. Migration season is underway. My ear is tuned for the first northern birds moving south, but so far, it’s the usual suspects at the backyard feeders.

At Nachusa Grasslands, the bison calves have put on weight. Adult bison lounge in the grasses, in no particular hurry to go anywhere. August is about slowing down. Making time.

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Bunch galls, like alien wildflowers, appear on the goldenrods. This seems to be an especially good year for them. The goldenrod bunch galls, like the one below, are made by a tiny midge which feeds on the plant. The abnormal tissue forms a leafy rosette. Pretty, isn’t it? A harbinger of autumn.

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You’ll see other galls on the prairie if you look closely around you: ball galls, elliptical galls, blister galls. They all have different insect artists, busy at work on their creations. Bugguide.com has an excellent overview here.

The damselfly populations are beginning to taper off; but the violet dancers will hang around on the prairie until the end of the month. Common? Yes.  But no less special for their predictability. That violet!

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So much is happening on the tallgrass prairie in August. It’s difficult to miss a moment of it.

This past week, I’ve been regulated to the house for a bit to recover after some unexpected surgery. I’ve been trying to look at this enforced rest as an opportunity to slow down, catch up on reading,  and to enjoy the view from my back porch.  But with August in full swing on the prairie—and at the cusp of dragonfly migration season—it’s been a challenge. Without my prairie work and prairie hikes—or my natural history classes to teach—my backyard prairie patch, garden full of zinnias and tomatoes, and small pond have all been solace.

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You’d think a suburban backyard prairie patch and garden would be predictable and quiet. But I’m discovering the action never stops. From my vantage point on the porch, I see—for the first time—a great spreadwing damselfly. In my backyard pond! I’ve never seen them in the forest preserve where I once monitored, or the two prairie sites where I walk my dragonfly routes. And here in my backyard —right under my nose—he is.

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We look at each other for a bit.

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I admire his reflection in the pond until the wind fingers the water and ripples erase the image.

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He flies from perch to perch around the pond, then finally lands out of sight. Wow. Sometimes the biggest surprises are in your own backyard.

From the porch I watch the butterflies flap over the tomatoes. An eastern tiger swallowtail sips nectar from a zinnia mixed in with the gray-headed coneflowers. Zinnias mingle with my prairie plants. Although the zinnias are native to Mexico rather than Illinois, they are welcome in my garden as a magnet for pollinators.

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The same zinnia is quickly commandeered by a monarch. I haven’t found many caterpillars in my backyard this summer, but there are a lot of adults.

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Nearby, a painted lady takes her turn nectaring on the flowers.

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She floats to the rangy smartweed growing up through the rattlesnake master plants and rests for a bit on some leaves, letting me admire her soft, open wings. I’ve always struggled with the differences between a painted lady butterfly and the American lady butterfly. So similiar! And yet, different, if you know what to look for.  This bugguide.net side by side comparison has really helped me (click on the link). Take a look and see what you think.

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The Joe Pye weed in the backyard prairie patch is also a butterfly magnet. Bees work each individual petal; tiny dusty rose-pink tassels towering over my head. Moths love it too! An Ailanthus webworm moth competes with the bees for nectar, its bright geometric patterns a startling contrast.

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Bumblebees move from the Joe Pye blooms to buzz the ironweed. So many bees! I’ve tried to learn a few species without much success. Maybe now, I’ll have time.

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As I slowly walk through my backyard, I feel my frustration at not being able to go for a prairie hike dissipate.  Maybe….just maybe…this enforced rest and recovery will be an eye-opener. There’s a lot to see, right in front of me, just off my back porch. A lot to pay attention to. Goldfinches, sipping rainwater from the cup plants. The Cooper’s hawk lurking in a nearby maple, watching my birdfeeders for a snack. Cicadas tuning up. The smell of bee balm, the taste of mountain mint. So much color, music, fragrance, taste, and motion here. In the 20 years we’ve lived in the suburbs, I’ve never been more grateful than today that I planted a prairie patch; dug a small pond. I have a feeling the recovery time will fly.

Summer’s not over yet.

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Adventures await. Both in the backyard prairie and beyond.

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The opening quote is from Canadian novelist Mary Lawson (1946-) in her prize-winning first book, Crow Lake (2002). It’s one of my favorite novels about pond communities, rural life, academia, and northern Canada.  I re-read it every year.

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All photographs copyright Cindy Crosby: thunderstorm over the backyard garden and prairie patch, Glen Ellyn, IL; swamp milkweed (Asclepias incarnata) with blue vervain (Verbena hastata) and late boneset (Eupatorium serotinum), Belmont Prairie Nature Preserve, Downer’s Grove, IL; adult bison (Bison bison) Nachusa Grasslands, Franklin Grove, IL; violet dancer damselfly (Argia fumipennis violacea) Schulenberg Prairie, The Morton Arboretum, Lisle, IL; bunch gall on goldenrod made by a midge (Rhopalomyia solidaginis), Fermilab prairies, Batavia, IL; pond in author’s backyard, Glen Ellyn, IL; great spreadwing (Archilestes grandis), author’s backyard in Glen Ellyn, IL; great spreadwing (Arhilestes grandis), author’s backyard in Glen Ellyn, IL; reflection of great spreadwing damselfly (Archilestes grandis), author’s backyard in Glen Ellyn, IL; yellow eastern tiger swallowtail butterfly (Papilio glaucus) with heirloom Cut and Come Again zinnias (Zinnia elegans) and grey-headed coneflowers (Ritibida pinnata), author’s backyard garden and prairie patch, Glen Ellyn, IL; monarch butterfly (Danaus plexippus) with heirloom Cut and Come Again zinnias (Zinnia elegans) and gray-headed coneflowers (Ratibida pinnata), author’s backyard garden and prairie patch, Glen Ellyn, IL; painted lady butterfly (Vanessa cardui) on a Cut and Come Again zinnia (Zinnia elegans), author’s backyard garden and prairie patch, Glen Ellyn, IL; Ailanthus webworm moth (Atteva aurea) on Joe Pye weed (Eutrochium maculatum), author’s backyard prairie patch, Glen Ellyn, IL; tall ironweed (Vernonia gigantea) with brown-belted bumblebee (Bombis griseocollis), author’s backyard prairie patch, Glen Ellyn, IL; bench on the Schulenberg Prairie in August, The Morton Arboretum, Lisle, IL.

Cindy’s classes and speaking are on www.cindycrosby.com   

Under the Prairie Ice

“To keep every cog and wheel is the first precaution of intelligent tinkering.”–Aldo Leopold

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Polar Vortex! In the Illinois prairie region, all the chatter is about the week’s forecast: wind chill temperatures of 50-plus degrees below zero. Brrr! It’s a good time to dream a little bit about the summer to come.

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One of my favorite tasks as a prairie steward is monitoring dragonflies.  People often ask me in the winter, Where are the dragonflies now? How do they survive the brutal cold? 

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Some, I tell them, like the green darners and black saddlebags, have migrated south to reproduce. Later generations journey back north again, much like the well-publicized monarch butterfly. But most of our dragonflies are still here—in the nymph stage—under the surfaces of streams, ponds, and pools of prairie wetlands, waiting for spring and warmer temperatures. Under the prairie ice.

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Dragonflies and their population changes tell us a lot about our water quality. Dragonfly responses to climate also help us understand what we see happening in the see-sawing temperatures and weather changes in the world around us. Good reasons to care! With this in mind, citizen scientists monitor dragonflies of all species, tracking their numbers each year.

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We need our dragonflies. I’ve spent a lot of time kayaking and looking for dragonflies and damselflies on Silver Lake at Blackwell Forest Preserve in Warrenville, Illinois, just for fun.  But now, in this January cold, the lake is full of ice fisherman.

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Just across the preserve, not far from the ice fishing houses, is my destination—the Urban Stream Research Center. Here, one of our most vulnerable insect species, the Hine’s emerald dragonfly, is being reared.

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Some people dream of meeting sports heroes. Others, their favorite rock star. Me, I dream of seeing the Hine’s emerald dragonfly (Somatochlora hineana) winging its way through a prairie preserve. It’s our only federally-endangered dragonfly. Finicky? Yes! It has a lot of special requirements, including shallow flowing water and time spent in burrows made by the devil crayfish. 

During the winter months, I pore over my favorite dragonfly field guide by Kurt Mead part of the North Woods Naturalist Series

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… and open it to the Hine’s emerald dragonfly spread. Then, I think what it would be like to see the real thing.

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Today, I’ll get part of my wish.

Heading up the project in its third year in the Chicago Region is DuPage County Forest Ecologist Andrés Ortega. His enthusiasm for dragonflies and passion for the project are evident from the first moment of my arrival at the center.

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Andrés reaches into a refrigerator, and pulls out a dozen vials of tiny Hine’s emerald dragonfly nymphs.

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The dragonfly nymphs are in “diapause,” just as nymphs are outdoors. These nymphs enjoy cool refrigerator temps of about 40 degrees Fahrenheit;  their normal overwintering temperature, Ortega tells me.

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The eggs were gathered from gravid female dragonflies at known breeding sites in DuPage and Cook Counties, Andrés tells me.  Once netted, the tip of the female dragonfly’s abdomen is dipped into water—a process that simulates ovipositing—causing her to release her eggs. After the eggs are harvested, they are taken to a research laboratory in South Dakota. Here, they hatch and are cared for through their first months or even years of nymph life.

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Then, they are driven to Illinois and hand-delivered to Ortega at the Urban Stream Research Center.

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These are ferocious little critters. Andrés tells me they keep similar-sized nymphs with other similar-sized nymphs, as larger ones will enjoy the smaller ones for dinner if thrown together. Cannibalism! It’s a bug-eat-bug world out there. Staff carefully control the water quality (which should not be too clean) and water temperature.

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In the spring, the nymphs will be released into the research center’s indoor raceways. These are long pools that mimic stream-like conditions. The temperature of the water in the raceways is carefully calibrated to reflect the rising temperatures outdoors.

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Raceways are custom made by employees expressly for the dragonfly rearing. Sand, rocks, frayed rope pieces, and plastic aquarium plants offer hiding places for the nymphs. In about mid-May, the nymphs will begin feeding from a menu that includes small crustaceans and midge larvae. The screens and netting will keep midges from escaping and interfering with other research work at the center, such as mussel propagation.

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It will take the dragonfly nymphs about four to five years to reach maturity, from the egg stage to the beautiful creatures of the air I see in my field guide. When ready to emerge, they will be released into suitable nature preserves in the state.

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Ortega tells me that less than one percent of the Hine’s emerald dragonfly nymphs survive in the wild. Pretty slim odds, aren’t they?  I’m grateful to people like Andrés Ortega. He is one of our unsung heroes, doing the hard work of keeping part of the natural world from vanishing forever.

The next time you see a frozen prairie stream or pond this winter, think of the many different species of dragonflies waiting to emerge, just underneath the surface. Who knows? This might be the year we see more of the Hine’s emerald dragonflies, cruising through prairie wetlands. I’m planning to show up and look.

How about you?

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The Aldo Leopold quote that opens this essay is from Round River. Leopold is often referred to as the father of wildlife ecology and the United States’ wilderness system. Please visit The Aldo Leopold Foundation’s website to learn more about Leopold and his work, which is carried on today.

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Grateful thanks to Andrés Ortega for his tour of the Urban Stream Research Center; his patient answers to all my questions;  his reading and suggested edits for this blogpost (all remaining errors are my own); and his terrific work with dragonflies. Contact him at aortega@dupageforest.org.

Many thanks to super nice guy Kurt Mead, author of Dragonflies of the North Woods, Third Edition (2017), and Sparky Stensaas, co-owner of Kollath+Stensaas Publishing, who approved using the cover and pages with the Hine’s emerald dragonfly for this post (and also thanks to photographer Troy Hibbitts whose Hine’s emerald images (thehibbets.net) appear on those pages. If you are interested in dragonflies, you should own this beautiful guide–it is indispensable for Midwestern dragonfly chasers, even if you live a little further south of the North Woods (I live in Illinois).  Order from your favorite local bookseller, or online here.

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All photos copyright Cindy Crosby (top to bottom): Mt. Hoy, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; cold day at Springbrook Prairie, Naperville, IL; hundreds of Canada geese (Branta canadensis) on open water of Springbrook Creek at Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL;  male calico pennant (Celithemis elisa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL:  ice fishing shacks on Silver Lake, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; Cover of Dragonflies of the North Woods, Third Edition, by Kurt Mead (2017), courtesy Kollath+Stensaas Publishing and Kurt Mead; interior spread, Dragonflies of the North Woods, Third Edition, by Kurt Mead (2017), courtesy Kollath+Stensaas Publishing and Kurt Mead. Andrés Ortega (Homo sapiens), ecologist, Forest Preserve District of DuPage County, Warrenville, IL; vials of Hine’s emerald dragonfly (Somatochlora hineana) nymphs, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph,Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; water system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; raceway system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; life support system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Fox River, Geneva, IL.