Invertebrates Archives - Page 2 of 25

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”

August 23, 2021March 12, 2022

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.

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:

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 21, 2021March 12, 2022

Malacomosa Dance

My father’s first caterpillar encounter has always been a bedtime favorite. The story goes that a plump fuzzy one was crawling on his picnic blanket one afternoon. I would imagine him watching its five pairs of prolegs innocently undulating along. Then, Dad ate it, hairy bristles and all. My first encounter was almost as tasty but longer-lasting because it came from the pages of Eric Carle’s picture book classic, The Very Hungry Caterpillar. A recent New York Times article reporting the author’s passing reveals that Carle’s interest in crickets, fireflies, and other insects was sparked as a child by peeking under bark or stones walking in the wild with his father.

Western Tent Caterpillars Malacosoma californicum, Courtesy & Copyright Shannon Rhodes, Photographer — Western Tent Caterpillars
*Malacosoma californicum*
Courtesy & Copyright Shannon Rhodes, Photographer

There’s nothing like a caterpillar, green or woolly, slinking along in the dirt or hanging by a thread from overhead branches, to distract a group of young outdoor learners. I resist the urge to caution them that there are poisonous caterpillars in the world, and we play. Yet, how many times have I encountered a silky mass in the limbs of a chokecherry, stopped and watched the caterpillars wiggle and twitch, and wished that I knew more about them? The magic for me of being out in the forest meadows this time of year is coming home with more questions than answers. So, becoming a novice lepidopterist, I focused this week on learning about caterpillars, butterflies, and moths. The frenzied dance of this caterpillar, what I think is known by the lyrical name Malacomosa, is not to draw me in for a closer look; the tent caterpillar senses a predator is near and gets the whole gang going. Soon these gorging wigglers will be settling into silky cocoons and emerging as moths. According to Eric Carle’s website, he intentionally had his butterfly come from a cocoon rather than a scientifically-accurate chyrsalis because it sounds more poetic, and my budding readers appreciate being able to more easily stretch and blend cocoon sounds anyway. We do use the word caterpillar, though, for both moth and butterfly larvae, but that is where many of the similarities end.

Drab Moth, Courtesy & Copyright Shannon Rhodes, Photographer — (Not so) Drab Moth
Courtesy & Copyright Shannon Rhodes, Photographer

Butterflies get noticed because they flutter during the day, while moths are typically more active by night. In fact, when I am outside I turn to my Kaufman Field Guide to Butterflies because I never thought to purchase a book on identifying moths. The first thing it says to do is look at the antenna. A butterfly antenna has a club tip, and often a moth has thick and feathery antennae to help it pick up scents flying around at night. Butterflies have names like swallowtail, fritillary, metalmark, and checkerspot, and moths just rhyme with sloths. Compared to butterflies, moths are generally smaller and drab in color. Drab? I met a moth resting on a twig once that was anything but drab. Its chunky abdomen was striped black and the most vibrant tangerine orange imaginable, and I was mesmerized. Moths should get more love, especially when you know that there are so many more kinds of moths than butterflies to enjoy. Consider getting out to notice the wonder of moths with other citizen scientists for National Moth Week 2021 this July 17-25.

Writing from the Central Utah Writing Project, I am Shannon Rhodes and I’m wild about Utah.

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

Additional Reading:

Brock, Jim. Kaufman Field Guide to Butterflies of North America. http://www.kaufmanfieldguides.com/butterflies.html

Carmel, Julia. Eric Carle, Author of ‘The Very Hungry Caterpillar,’ Dies at 91., The New York Times, May 26, 2021. https://www.nytimes.com/2021/05/26/books/eric-carle-dead.html

Eric Carle Official Website. https://eric-carle.com/

Florida Museum of Natural History. Butterflies and Moths. https://www.floridamuseum.ufl.edu/wp-content/uploads/sites/16/2017/02/Butterfly-Educators-Guide.pdf

Forest Health Protection. Western Tent Caterpillars. 2011. https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5303047.pdf

National Moth Week. https://nationalmothweek.org/

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