Insects Archives - Wild About Utah

August 15, 2022August 15, 2022

Face to Face with a Longhorned Beetle

Longhorn Beetle Crossidius coralinus Courtesy & © Shannon Rhodes, Photographer — White-spotted sawyer
*Monochamus scutellatus*
Courtesy & © Shannon Rhodes, Photographer

Longhorn Beetle *Crossidius coralinus*
Courtesy & © Shannon Rhodes, Photographer

A Childs Sawyer Beetle in Her Naturalist Journal
Courtesy & © Shannon Rhodes, Photographer

Before E. B. White set about crafting Charlotte’s Web in 1949, according to Melissa Sweet’s biography Some Writer, he was “bringing a pail of slops to the barn” that he loved in Maine and thinking about a time not long before when he observed a barn spider spinning her egg sac and depositing her eggs. Weeks later, when he had brought the egg sac in a candy box to New York City, he found hundreds of spiderlings emerging and realized a story emerging as well. Michael Sims, author of The Story of Charlotte’s Web, quotes from a letter White wrote to some schoolchildren: “I didn’t like spiders at first, but then I began watching one of them, and soon saw what a wonderful creature she was and what a skillful weaver. I named her Charlotte.” E. B. White went to Willis J. Gertsch, author of American Spiders and expert at the American Museum of Natural History’s Department of Insects and Spiders, to learn. He spent a year studying spiders in order to get the story just right.
Face to Face with a Longhorned Beetle
In northern Utah last week I made a friend who happened to be a white-spotted sawyer beetle named Monochamus scutellatus. My children and I have been fascinated by these insects for years. If you are the most apprehensive and skittish adventurer in your group, chances are that this relatively large forest insect will glide in, land on you, and courageously stay, as if it had something to say. Like E. B. White and the orb weaver Aranea cavatica, this longhorned beetle and I had a face-to-face chat. What you will notice immediately are his long horns. These antennae were twice as long as the rest of his body, and that’s how you would know he was a male. The antennae of the females, in contrast, are typically only half as long. Both male and female have a distinctive white dot at the base of the wings, an easy way to distinguish them from the invasive Asian longhorned or velvet longhorned varieties.

This white-spotted sawyer said he is often misunderstood because of his appearance. He can’t help looking a bit creepy. He also sometimes gets blamed for damaging forests and wanted to set the record straight. He said that as a grub, he fed on the sapwood of evergreen trees that are already dead or nearing it. In fact, sawyer beetles invade trees following forest fires and in the months following mountain pine beetle attacks. They do not, however, kill healthy thriving trees. Sawyer beetles are, though, responsible for the familiar teeth-grinding sounds one hears in a wooded area as the fleshy larvae scrape with their mandibles.

At the other end of Utah perched in Monticello’s rabbitbrush a few days ago, I met a colony of striking Crossidius coralinus. Instead of mostly black bodies, these longhorn beetles boast vibrant reds and many more stories to tell. Thanks to beetle entomologist Ted MacRae, I am able to understand those stories better. I must admit that I will probably still jump when a longhorned beetle initiates a conversation from my forearm, but I now appreciate its point of view. After all, Charles Darwin suggested that “a taste for collecting beetles is some indication of future success in life,” and I will take all the help I can get.

For Wild About Utah, I am Shannon Rhodes.

Credits:
Images: Courtesy & Copyright Shannon Rhodes, Photographer
Audio: Courtesy & © Kevin Colver https://wildstore.wildsanctuary.com/
Text: Shannon Rhodes, Edith Bowen Laboratory School, Utah State University https://edithbowen.usu.edu/
Additional Reading Links: Shannon Rhodes

Additional Reading:

Wild About Utah Posts by Shannon Rhodes https://wildaboututah.org/author/shannon-rhodes/

Cohen, Joel I. Exploring the nature of science through courage and purpose: a case study of Charles Darwin’s way of knowing. SpringerPlus. 2016. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020019/pdf/40064_2016_Article_3053.pdf

Corrigan, Maureen. How E. B. White Spun Charlotte’s Web. Published July 5, 2011, accessed August 5, 2022. https://www.npr.org/2011/07/05/137452030/how-e-b-white-spun-charlottes-web

MacRae, Ted C. “Big, Black (and Red), and Beautiful: Mini-review of the Cicindelidia abdominalis species-group.” Published July 18, 2014, accessed August 13, 2022. Beetles in the Bush, https://beetlesinthebush.wordpress.com/2011/09/14/mini-review-of-the-cicindelidia-abdominalis-species-group/.

Rodman, Taryn M. et al. Velvet Longhorned Beetle. Utah Pests Fact Sheet. July 2020. https://extension.usu.edu/pests/research/velvet-longhorned-beetle#:~:text=Quick%20Facts,%2C%20%20Davis%2C%20and%20%20Tooele%20%20counties

Spears, Lori et al. Invasive Insect Lookalikes: mistaken insect identity. Utah Pests Fact Sheet. October 2015. https://extension.usu.edu/pests/research/invasive-insect-lookalikes

Strand, Holly. Bark Beetle Mania! Published June 25, 2009. https://wildaboututah.org/bark-beetle-mania/

Sweet, Melissa. Some Writer!: The Story of E.B. White. 2016. Houghton Mifflin Harcourt. https://www.melissasweet.net/somewriter

United States Forest Service. Mountain Pine Beetle. 2011. https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5299324.pdf

Utah Pests Quarterly Newsletter. Winter 2021. Vol. XV. Asian Longhorned Beetle: not yet in Utah. https://extension.usu.edu/pests/files/up-newsletter/2021/UtahPestsNews-winter21.pdf

August 8, 2022August 7, 2022

Our Mormon Crickets

Mormon Cricket female Anabrus-simplex Courtesy & Copyright Shannon Rhodes, Photographer — Mormon Cricket female
*Anabrus-simplex*
Courtesy & Copyright Shannon Rhodes, Photographer

Children’s author George Selden described the impact of a cricket’s chirping in the bustle of a subway station in his book “The Cricket in Times Square” like this: “Like ripples around a stone dropped into still water, the circles of silence spread out. …Eyes that looked worried grew soft and peaceful; tongues left off chattering; and ears full of the city’s rustling were rested by the cricket’s melody.” Combine this musical talent with Jiminy Cricket’s gentle reminder to always listen to my conscience, and it is no wonder that I would drift to sleep on summer evenings enamored with cricket songs. How, I thought, could such a beautifully-sounding insect be the villain in Utah’s legend we know as the Miracle of the Gulls, memorialized in Minerva Teichert paintings and Temple Square monuments?

Decades later, near Fremont Indian State Park, I met a Mormon cricket for the first time. I cringed as I watched thousands of these creatures hopping across the mountain path that afternoon, and I understood how merciful those California gulls must have seemed, swooping in to gobble up the insects, as the Mormon pioneers struggled to develop a defensive, crop-saving plan as newcomers to this land.

Utah settler Mrs. Lorenzo Dow Young captures a bit of the incident in her 1848 journal entry: “May 27: …today to our utter astonishment, the crickets came by millions, sweeping everything before them. They first attacked a patch of beans…, and in twenty minutes there was not a vestige to be seen. They next swept over peas…; took everything clean.” These hordes of insects were not new to the area, however, as we know that explorer Peter Skene Ogden noted “crickets by millions” in his 1825 journal account over 20 years earlier.

Did you know that Mormon crickets are not crickets, grasshoppers, or cicadas, but large shield-backed katydids that walk or hop rather than fly? Their smooth, shiny exoskeleton can be a variety of colors and patterns, like the reddish-brown female I chased and studied this summer in Fishlake National Forest. They have long antennae, and each female has what looks like a long curving stinger extending from her abdomen. This ovipositor allows her to deposit 100 eggs or more that look like gray or purple rice grains just below the soil surface. The males, on the other hand, lack this structure, but they “sing” as a way to attract females, and reward their mates with protein-packed spermatophore prizes.

Katydid or bush cricket Courtesy & Copyright Shannon Rhodes, Photographer — Katydid or bush cricket
Courtesy & Copyright Shannon Rhodes, Photographer

These insects can be solitary mountain-dwellers but make headlines when they swarm in huge bands, marching in one direction as omnivores, in search of anything to eat: cultivated crops, succulent forbs, sagebrush and other shrubs, other insects, and even their own kind. Researchers tracking migrations determined they can travel more than 50 miles in a summer, perhaps a mile a day, and for many, including those early Utah settlers and others hoping to shield crops from Mormon cricket devastation, it is a sign of relief to see the last one for the season. They do make for a great story, though.

For Wild About Utah, I’m Shannon Rhodes.

Additional Reading:

Anderson, Rebecca. Miracle of the Crickets. Utah Humanities. 2011.
https://www.utahhumanities.org/stories/items/show/223

Capinera, John and Charles MacVean. Ecology and Management of Mormon Cricket. Department of Entomology Colorado State University. 1987.
http://www.nativefishlab.net/library/textpdf/17378.pdf

Church of Jesus Christ of Latter-day Saints. Crickets and Seagulls. https://www.churchofjesuschrist.org/study/history/topics/crickets-and-seagulls?lang=eng

Cowan, Frank. Life History, Habits, and Control of the Mormon Cricket. United States Department of Agriculture. 1929. https://naldc.nal.usda.gov/download/CAT86200155/PDF

Hartley, William. Mormons, Crickets, and Gulls: A New Look at an Old Story. 1970. https://issuu.com/utah10/docs/uhq_volume38_1970_number3/s/107089

Kent State University. Study Reveals Mass Migration Of Mormon Crickets Driven By Hunger, Fear. ScienceDaily. ScienceDaily.com, 2 March 2006. https://www.sciencedaily.com/releases/2006/03/060302174524.htm

National Geographic. Giant Swarm of Mormon Crickets. https://www.youtube.com/watch?v=Yy3dQJYquoY

Palmer, Matt. Get a Jump on Mormon Cricket and Grasshopper Management. https://extension.usu.edu/pests/slideshows/ppt/03sh-insects-mc.pdf

Selden, George, and Garth Williams. The Cricket in Times Square. New York: Ariel Books, 1960. https://www.amazon.com/Cricket-Times-Square-Chester-Friends/dp/0312380038

University of Wyoming. Mormon Cricket Biology and Management poster. https://owyheecounty.net/wp-content/uploads/2018/06/MormonCricketbiologymgmtposteruofWYB1191.pdf

The Wild Episode. Mormon Cricket: The Cannibal Swarm.
https://thewildepisode.com/2020/12/11/mormon-cricket-the-cannibal-swarm/

Wild About Utah Posts by Shannon Rhodes https://wildaboututah.org/author/shannon-rhodes/

June 13, 2022June 13, 2022

Nature Came to Me

Glovers Silk Moth Courtesy & © Shannon Rhodes, Photographer — Glovers Silk Moth
Courtesy & © Shannon Rhodes, Photographer

Glovers Silk Moth
Courtesy & © Shannon Rhodes, Photographer

This week I couldn’t make time to get out into nature, so nature came to me. I suppose people think that once students stack chairs and say goodbye as they carry their yearbooks, portfolios, and report cards out the door, their teacher lounges all summer in a hammock with a just-for-fun book and a lemonade. Perhaps a few teachers do. This teacher was scurrying off to afternoon meetings about math tutoring and curriculum planning after spending mornings discussing hundreds of scholarly journal pages she’d read the night before about effective writing instruction. No, I wouldn’t make time this week for nature, so nature came to me, begging me to slow down, take notice, pause, breathe.

First, it was a bird with a yellow head perched just outside my bedroom window as I hit the alarm. I didn’t take the time to get the details or even listen to its song as I rushed off to the car. Was it a warbler or a meadowlark? I’m not sharp enough on my bird identifying yet to instantly know, and there was no time anyway. Not even to take a picture.

Rushing from my office to the adjacent building for class, I did stop to stare at the largest moth I’d ever seen that was perched on the similarly-colored rusty-brown brick. This time I pulled out my phone to get some shots, certain that the iNaturalist app would reveal how uncommon it is to see a moth bigger than the size of my fist leisurely greeting me on the summer camp-bustling university campus. Patiently it sat as I zoomed in closer to get all the angles of its head, wooly abdomen, and wing patterns. 7:58–time to go find my seat.

Later, my iNaturalist app provided a suggestion: Glover’s Silk Moth, a rather common find this time of year in my part of the world. Then, as I sat on a dining patio overlooking the river telling my friends about the moth, a garter snake skirted the rock wall just feet away from me until it found a comfortable spot to watch and listen.

Suddenly, I realized that nature was hosting a BioBlitz for me if I wanted to join in. A BioBlitz, according to the partnership of National Geographic and iNaturalist, is “a celebration of biodiversity….focused on finding and identifying as many species as possible in a specific area over a short period of time.” Children’s book author Loree Griffin Burns cleverly guides her young readers in similarly throwing a Moth Ball.

Last June I learned that my tangerine-colored moth find in Logan Canyon was a Nuttall’s Sheep Moth, and that I could join citizen scientists all over in pinning observations on the map and logging wild encounters like this new-to-me species, especially during National Moth Week. It was William Wordsworth who wisely wrote, “Come forth into the light of things, Let Nature be your teacher.” This week she was trying to teach me to be more aware, that my day’s list could allow time to appreciate a yellow bird, a curious snake, and a marvelous giant silk moth, and suddenly I was also spotting ladybug larva and ring-necked pheasants. I had time. As Richard Louv states in his book titled Last Child in the Woods, “Nature does not steal time; it amplifies it.”

For Wild About Utah, I’m Shannon Rhodes.

Credits:
Images: Courtesy & Copyright Shannon Rhodes, Photographer
Additional Audio: Courtesy & © Kevin Colver https://wildstore.wildsanctuary.com/collections/special-collections
Text: Shannon Rhodes, Edith Bowen Laboratory School, Utah State University https://edithbowen.usu.edu/
Additional Reading Links: Shannon Rhodes

Additional Reading:

Burns, Loree Griffin. You’re Invited to a Moth Ball: A Nighttime Insect Celebration. 2020. https://loreeburns.com/

Greene, Jack. Join a BioBlitz This Year. Wild About Utah, May 30, 2016. https://wildaboututah.org/bioblitz/

Insect Identification.org. Glover’s Silkmoth. January 3, 2022. https://www.insectidentification.org/insect-description.php?identification=Glovers-Silkmoth

Louv, Richard. Last Child in the Woods: Saving Our Children from Nature-Deficit Disorder. 2008. http://richardlouv.com/books/last-child

National Geographic. BioBlitz. https://www.nationalgeographic.org/projects/bioblitz/

National Moth Week, Friends of the East Brunswick Environmental Commission, https://nationalmothweek.org/

Rhodes, Shannon. Malacomosa Dance. Wild About Utah, June 21, 2021. https://wildaboututah.org/malacomosa-dance/

University of Wisconsin Milwaukee Field Station. Giant Silk Moths. November 26, 2014. https://uwm.edu/field-station/giant-silk-moths-family-saturnidae/

Winter, William D. Jr. Basic Techniques for Observing and Studying Moths & Butterflies. The Lepidopterists’ Society. 2000. https://www.lepsoc.org/sites/all/themes/nevia/lepsoc/Memoir_5_Basic_techniques_manual.pdf

Wordsworth, William. The Tables Turned. 1798. https://www.poetryfoundation.org/poems/45557/the-tables-turned

November 15, 2021March 12, 2022

The Quiet Importance of Brine Flies

It was early afternoon in mid-July 2019 and my first time setting foot on Antelope Island. As a newcomer to Utah, I was itching to explore the local sights and had come to learn about the impressive annual shorebird migration from my friend, a bird enthusiast and fellow graduate student. Brimming with excitement, and a little put off by the smell of Great Salt Lake mud wafting through the open windows, we parked the car in the Antelope Island Marina parking lot and jumped out onto the shore of the famed isle. Thousands of birds dotted the water around the harbor, and the ubiquitous Antelope Island spiders blanketed the bushes with innumerable webs. But it wasn’t the birds stretching as far as the eye could see out on the waters of Great Salt Lake, or the impressive number of spiders skittering past our car tires that left a lasting impression on me.

As we stepped out onto the beach to get a closer look at the birds bobbing on the salt water and to set up the birder’s favorite tool, a spotting scope, the dark grey sand under our feet sprang to life with a gentle buzz. The sand, or what I thought was sand, was actually a shoal of brine flies, easily numbering in the millions. Surprised by our discovery and shorebirds completely forgotten for the moment, we walked slowly along the shore, and with each step, a cloud of flies jumped up to avoid our footfalls, gently settling back down behind us as we walked on.

Brine flies, which are small flies in the genus Ephydra, are a common occurrence around the lake. These gentle flies do not bite, and as adults, they don’t even have mouth parts to feed with. Much like mayflies, they only live a few days as adults, with the goal of reproducing and laying their eggs back in the waters of Great Salt Lake to start a new generation of flies.

Similar to an aquatic caterpillar, their larval stage lives in the briny waters of Great Salt Lake, feeding mostly on algae and other organic matter. At their peak population around Great Salt Lake each year, brine flies are estimated to number in the billions, and the skins they shed as they emerge from the water as adults pile up on the shore in incomprehensible numbers.

As such an abundant insect around the lake, they provide critical food for all manner of creatures. Our momentarily forgotten shorebirds are avid predators of brine flies, and, hungry from migration, these birds snap up brine flies by the thousands. Phalaropes, stilts and sandpipers are just a few of the bird species that feast on brine flies. Gulls love to feast on brine flies, and in silly gull fashion, go about chasing them up and down the beaches with open beaks and loud wails. Remarkably, for eared grebes, brine flies can make up 40 percent of their diet, while the remainder usually consists of another Great Salt Lake denizen, the brine shrimp.

Birds aren’t the only ones that rely on brine flies for food. Spiders, like the ones keeping us company in the Antelope Island bushes, as well as beetles and other invertebrates, feast on brine flies too. In fact, as scientists say, brine flies are an important part of our Great Salt Lake ecosystem. Walking slowly along the shore with my eyes pointed down toward the great clouds of brine flies at my feet, it was easy to see how their sheer numbers could feed an army of critters.

As someone who spends most of my time thinking about birds that eat fish and how to study them, I’m not one to trouble myself with thoughts about insects often, but thinking back on that remarkable July afternoon and the struggling health of our Great Salt Lake, I can’t help worry a little for the future of our gentle brine flies.

I’m Aimee Van Tatenhove, and I’m wild about Utah.

Credits:
Images: Courtesy Pixabay, Antelope Island in the Great Salt Lake, wnk1029, contributor and photographer, https://pixabay.com/photos/antelope-island-great-salt-lake-lake-2659982/
Sound: Courtesy & Copyright Aimee Van Tatenhove
Text: Aimee Van Tatenhove, USU Department of Biology, Utah State University
Additional Reading: Lyle Bingham, Bridgerland Audubon Society

Additional Reading

Pieces by Aimee Van Tatenhove on Wild About Utah

Brine Flies, Great Salt Lake Ecosystem Program, Utah Division of Wildlife Resources, State of Utah, September 01 2021, https://wildlife.utah.gov/gslep/wildlife/brine-flies.html

McPherson, Mia, Great Salt Lake Brine Flies – Important Food Source For California Gulls, OnTheWingPhotography.com, July 14th, 2018, https://www.onthewingphotography.com/wings/2018/07/14/great-salt-lake-brine-flies-important-food-source-for-california-gulls/

Van Elegem, Bernard, Great Salt Lake, Lord of the Flies – Part I, brine flies and bird abundance, June 16, 2015, http://www.bernardvanelegem.com/news/great-salt-lake-lord-flies-part-i-brine-flies-and-bird-abundance

Van Elegem, Bernard, Great Salt Lake, Lord of the Flies – Part II, Cicindela hemorrhagica, June 17, 2015, http://www.bernardvanelegem.com/news/great-salt-lake-lord-flies-part-ii-cicindela-hemorrhagica

Brine Flies scatter as you walk through, Great Salt Lake State Park & Marina, State Parks, Utah Department of Natural Resources, State of Utah, June 11, 2020, https://www.facebook.com/watch/?v=3137388862978108

Great Salt Lake Brine Flies, Antelope Island State Park, State Parks, Utah Department of Natural Resources, State of Utah, https://youtu.be/pktAdULIdZk
Brine flies abound around Great Salt Lake in the summer. As far as insects go, these are some of the “good guys”