Grasshoppers

By the River
I found this grasshopper on a stone down by the river. It seems more like a rockhopper rather than a grasshopper. Maybe I’ll name it the River Rockhopper. Along with moths, grasshoppers have superb camouflage, and most often, they are hopping away as I unknowingly walk up on them. There is plenty of grass and small forbs growing in between the rocks, so it should be easy for this grasshopper to stay on or close to the rocks to hide in plain sight.

Out in the Meadow
I have been seeing lots of grasshoppers out in the meadow and they blend in well with the dry, yellow grass. This one reminds me of a grass seed head. Notice that the wings on this grasshopper are not completely developed. Robins were scattered throughout the meadow this morning. They were scurrying about lunging for grasshoppers. They were successful too. It is hard to see, but the one in the photo just caught one and has it in its beak.

Water Penny Beetle

Lately, I have been poking around the edge of the river turning over stones, watching birds, listening to the river, and whatnot. There are many aquatic animals living and hiding out underneath rocks. My latest discovery is the water penny beetle. Along with the stonefly (posted on Aug. 1), this is another animal that is an indication of good water quality. The water penny thrives in flowing, unpolluted water that is also free from lots of sediments and algae. You will find them clinging to the undersides of rocks and logs in the water because they need to stay moist, stay hidden from predators, and are sensitive to light. That said, they will come out from hiding at night to eat on the upper surface. The larvae’s diet consists mostly of algae which are scraped off using rasps on their legs. They have dome-shaped bodies with flexible plates that allow them to hug closely to the surface and hold on. They have feathered gills under the abdomen that take in dissolved oxygen from the water.

It is interesting to realize that a larval stage of a beetle can be aquatic because I usually imagine it as a terrestrial grub underground or tunneling through the wood of a distressed or dead tree.

The adults resemble typical beetles. They are black or brown, oval, and have somewhat flattened bodies. The lifespan of the adults only lasts up to a couple of weeks—long enough to mate and for the female to lay eggs. Not only is there a short window in which to find an adult, they are only 4-6 mm long. I imagine it could be kind of tricky finding and identifying one.

As always, I hope this short post sparks your curiosity to do more research, go out to find one, and make more discoveries along the way.

Resources
Bug o’the Week – Water Penny Redux – Riveredge Nature Center. https://www.riveredgenaturecenter.org/bug-othe-week-water-penny-redux/#:~:text=The%20larvae%20of%20some%20species,into%20adults%20the%20next%20year. Accessed 15 Aug. 2023.

Hammond, George. “Psephenidae (Water-Penny Beetles).” Animal Diversity Web, https://animaldiversity.org/accounts/Psephenidae/. Accessed 15 Aug. 2023.

“Water Penny Beetle Larvae.” Missouri Department of Conservation, https://mdc.mo.gov/discover-nature/field-guide/water-penny-beetle-larvae. Accessed 15 Aug. 2023.

Skippers

Skippers are butterflies that partially resemble a moth because of their hairy bodies and small, triangular wings. They have noticeably large eyes and short antennae. When they perched, they would either hold their wings flat and parallel to their bodies or open with the forewings angled above the hind wings like a plane. The yellow-orange color of the underside of their wings was so beautiful and captured the warmth of the summer sun. It allowed them to blend well with the surrounding dry vegetation. I liked the contrast between their soft, quiet bodies and the crispy, crunchy grass. I often stirred them up from the ground before I saw them. They quickly skipped through the air and lit nearby. They were friendly and gave me a feeling of levity when I was around them. If I moved slowly, they allowed me to kneel down to get a closer look. I found them drinking nectar on small flowers like the nonnative teasel that has spread out across the south meadow.

Sources
Family Hesperiidae (Skippers) | Butterflies and Moths of North America. https://www.butterfliesandmoths.org/taxonomy/Hesperiidae. Accessed 11 Aug. 2023.

Stonefly Shed

Immature stoneflies live underwater (technically they’re called naiads), then crawl onto shore to go through their last molt and become a winged adult. The final molt leaves behind a beautiful and fascinating shell called the exuviae.

The naiad feeds on plants, decaying organic matter, and other insects. The nymphal stage lasts from one to four years. The adult stage lasts only for a few weeks, long enough to mate and lay eggs.

The adults are earth tones mostly some hue of brown or yellow. They have fairly long antennae, wings that fold back along their body, and two long cerci (tail-like appendages).

The presence of stoneflies in a river system is a sign of good water quality because they require clean, well-oxygenated water. A rocky aggregate bottom with high dissolved oxygen levels is often a productive area for stoneflies.

Cicada Shell

I’ve been hearing the sound of cicadas buzzing as I walk around the arboretum, and I will occasionally see one buzz by me. Hearing them buzz recalls memories of the hot, humid summers of the East Coast where I grew up. There were pine trees around my maternal grandparents’ house that always had these shells attached to the bark—the nymphs crawl out of the soil to molt into an adult, leaving this amazing papery exoskeleton behind. It is a treasure to come across one of these sheds out at the arboretum. It reminds me how nature is powerful at building connections to memories and feelings of my life.

Ants & Aphids

While hunting for acorn weevils, I came across small groups of aphids and ants on the stems of the oak trees. The aphids feed on the sap of plants and secrete a liquid known as honeydew. Ants are drawn to this sugar-rich substance and harvest it as a food source. In return, the ants will protect the aphids from predators like ladybugs. In reading about this symbiotic relationship, I found some fascinating articles. One article talked about one ant species storing the aphid eggs in the colony to protect them over the winter. Another article reported ants moving aphids to other plants to feed and clipping off their wings so they are unable to fly. One article talked about how ants will stroke the aphids with their antennae to stimulate them to secrete honeydew. As a result, some aphid species lost the ability to naturally secrete waste, and depend on ants to do it for them.

This is fascinating! I encourage you to read about the interesting research and discoveries being made about the relationship between ants and aphids. My intentions are always to pique your interest to explore, discover, wonder, enjoy, etc. the natural world. See you out there!

California Root Borer Beetle Larva

The foundation of the visitor’s center is being redone at the arboretum. Holes are being dug to pour concrete to support new beams. On one of the corners, there was a stump of an oak tree. While digging out the stump, Connor came across this huge larva boring through the middle of one of the roots, and it looks like a California Root Borer Beetle.

The California prionus beetle is 1¾ - 2¼ inches long (45-60 mm) and reddish-brown with long, deeply notched antennae. The larvae can be 4¼ inches (108 mm) and approximately ¾ inch (18 mm) at the widest point of their body.

The larva can spend from three to five years underground eating roots before reaching maturity. Based on the size of this larva, it appears to be getting close to maturity. So we found a small terrarium that wasn’t being used and set it up with soil and chunks of oak tree roots. We covered it with leaves and put a screened lid on top.

Of course, my hope is that the larva will pupate and turn into an adult beetle. I’m not sure of the survival rate of this beetle after being plucked from its home inside an oak root two feet underground. I’ll certainly let you know what happens.

Digging Up Yellow Jacket Nests

Recently, I found a yellow jacket nest from this year that a skunk had dug up. Skunks are primarily insectivores, and they will dig up nests of ground wasps to eat them and, I imagine, their larvae too. I investigated the nest debris outside the hole and inside. I didn’t see any yellow jackets or larvae. The nest cavity was only a few inches underground and roughly the size of a soccer ball. I went to the location of another nest from the summer and found that it had also been shoveled out. At the entrance, I saw what looked like a yellow jacket queen. Surprisingly, she was still alive but not very active.

I wondered when were these dug up. The digs seemed fresh, and some of the paper of the nest had not been soaked through by the rain. I thought the nests had died off for the winter, but I knew the skunk wouldn’t dig in there for nothing. We have had some frosty, cold nights when the temperature dipped into the upper 20’s (degrees Fahrenheit). Were there any yellow jackets or larvae still in the nests?

I decided to get a shovel, find a nest, and dig it up to see what was in there. There were a few nests near the White Oak Pavilion that I hoped the skunk hadn’t found. While getting a shovel, I ran into Patrick at the shop, and he came with me. We were unable to find the first one we looked for in all of the fallen leaves and grass. We went to two more locations, and the nests had been dug up already. We went to a fourth location and saw that it hadn’t been dug up yet. We started scraping away the leaves and fallen grass, looking for it. Patrick found the entrance to the nest because yellow jackets began streaming out to investigate. It was a cool day so they were only circling close the entrance. Nevertheless, we quickly backed away. I couldn’t believe it was still active! It is almost winter, and I thought yellow jacket nests wouldn’t have survived this long. If the weather is mild enough and the location of the nest is in a protected dry area, is it possible that a nest could overwinter here? I’ll be watching this one to see what happens. Will it survive the winter or will the skunk find it?

Leaf Gall Smorgasbord

Chickadees have an intimate knowledge of the trees. They never stop investigating every nook and cranny of a tree. They will explore the very top of the tree and everything in between to the base. I will even see them on the ground around it.

The other day I was watching a flock of them eating heaps of these leaf galls. Every single leaf that I could see on this oak tree had galls on the underside. Within a matter of seconds, a chickadee would pluck one, hold it with its feet, open it, and eat the small larva inside. I can’t even imagine how many insects one chickadee consumes in a day.

August Jackson at the arboretum just put together a small brochure of Mount Pisgah oak gall wasps. It is at the kiosk just before you walk across the bridge into the White Oak Pavilion. It has great photos. Check it out.

Paper Sediment

If asked to imagine a bald-faced hornet, most people would probably think of its bold black-and-white markings and have feelings of unease and wariness. If you get near their nest and they feel threatened, they will fiercely protect their home by administering a painful sting that definitely leaves a mark on your memory.

On the flip side, there is more to a bald-faced hornet than its ferocity. They are masters at crafting beautiful, sturdy homes made out of paper. An up-close look at their pendant nests reveals magical striations of chewed wood fibers. It is amazing to see all of the strands pasted together to form a fibrous mat.

So next time you see a bald-faced hornet, may you have reverence for its skill in building a home and a healthy respect for its ability to protect it.

Black-and-yellow Argiope Spider Egg Sac

I went to check on one of my spider friends to see how she was doing. She has a home close to the ground in a cluster of thistles out in the meadow. When arrived at her doorstep, I found the web collapsed, and she had disappeared. As I surveyed the area to see if she had built a new web nearby, I noticed a brown, papery egg sac suspended by silk filaments zigzagging in all directions.

After the female mates, she creates 1 to 4 of these sacs which contain 300-1400 eggs. I found another one close by hidden within vegetation about 3 inches from the ground. Interestingly, the eggs hatch in the fall, and the baby spiders will overwinter inside and emerge in the spring. The sac must be tough and well-insulated to protect them all winter, exposed to the weather out in the meadow.

I think this egg sac is so fascinating and beautiful in the way it is attached and supported. I find it interesting that she can create this tough, papery cover. From what I could find searching around on the internet, this egg case is made of silk. I am guessing is somehow made differently from the silk used to make her web, because it seems so structurally different. I want to find out more about this, and when I do, I’ll pass it along.

Resource
Hammond, George. “Argiope Aurantia.” Animal Diversity Web, https://animaldiversity.org/accounts/Argiope_aurantia/. Accessed 17 Oct. 2022.

Western Tree Cricket

Walking through the meadows of the arboretum, I am serenaded by tree crickets. I have been able to find two different kinds. I posted a video last fall (Tree Cricket Singing, 10/18/21) of what I believe is a snowy tree cricket. It has a melodic, pulsing chirp. I think the one I found this year is the western tree cricket. It has a continuous trill that has a crisp, ringing note. You can see from the video that they fan their wings forward and rub them together. The sound resonates quite far across the landscape for such a small, delicate creature.

The Songs of Insects by Lang Elliott and Wil Hershberger had this to say about the songs of insects: “Singing insects produce sounds in a variety of ways. Members of the order Orthoptera typically create sound by ‘stridulation,’ which is the rubbing of one body part against the other. Among crickets and katydids, the base of the forewings is specially modified for sound production. A sharp edge, or ‘scraper,’ at the base of one front wing is rubbed across a bumpy ridge, or ‘file,’ located at the base of the opposite wing.” In the section on tree crickets, they mention that “males of a number of species often sing from the underside of a curled leaf, from the edge of a leaf, or from a hole in a leaf, in order to reduce acoustic interference and thereby increase the intensity of their songs.”

Resource
Elliott, Lang, and Wil Hershberger. The Songs of Insects. Houghton Mifflin Co, 2007.

Yellowjackets in Full Force

The yellowjackets are out in full force in the warm, autumn sun. Lately, the moment I step out of my truck in the parking lot, one is there to greet me. They must be nearsighted because they always want to hover back and forth close to my face to see who I am. I’m not sure what this close encounter is all about, maybe they think an insect is stuck in my teeth from the drive out there. They usually investigate the front of my truck and remove insects from there. The other day when I was taking a photo, one landed in between my fingers and begin chewing on a small flake of dried skin. That said, yellowjackets only tend to be aggressive towards people if you get near their nest. They are part of a healthy ecosystem to keep the balance of nature. The adults feed on nectar, so presumably, they will be pollinators of flowers. The larvae feed on pre-chewed insects like the grasshopper in the photo. This helps to keep the insect populations in check.

In the late summer, males will mate with new queens. As autumn progresses towards winter and the cold weather sets in, all the yellowjackets die except for the mated females. These will overwinter in the soil or litter of vegetative matter on the ground like leaves.

Resource
Milne, Lorus Johnson, and Margery Milne. The Audubon Society Field Guide to North American Insects and Spiders. Knopf : distributed by Random House, 1980.

Dried Plants = Habitat

When plants die off for the year, they can take on a new life. The fibers of many plants are extremely sturdy and can remain durable for a long time. The stems can become fairly “woody” and are often hollow. For insects and spiders, these are places of refuge and homes for eggs or cocoons to be protected.

Creating a habitat around where you live is the best way to attract, observe, and support invertebrates. Native plants are the best ones to grow. After you have enjoyed watching them grow and flower, leave the dried plant stalks. I know this can be challenging for many people. It can appear messy, and they want to tidy their garden at the end of the season. If this is how you feel, maybe start by leaving a small section untouched on the periphery. I like these places because they attract birds. They are places for them to forage and can offer protection from predators.

If you don’t have an area around your house or apartment to be creative, I recommend joining and volunteering at your local arboretum like Mt. Pisgah. An abundance of beauty and mysteries are waiting to be experienced and explored.

Grasshopper Dreams

The other morning I came across this grasshopper snuggled in the top of this Queen Anne’s lace seed head. The air was cool, and the grasshopper seemed to be waiting for the day to warm up to become more active. Thus, I was able to get a photo without it hopping away. When it warmed up later that morning, I was seeing grasshoppers springing in every direction. The south meadow has been particularly active with them. It seems like a pretty good year for grasshoppers.

Seeing this grasshopper nestled in its flower roost got me wondering if insects sleep. I imagined that all life forms need rest. It makes sense that grasshoppers need to wind their springs. At the end of the day, It feels so good to lay your head down, especially under a blanket of stars cradled in the top of a flower.

Argiope Catching Grasshopper

As I take a step into the meadow, grasshoppers spring into the air and fly in every direction. They are well camouflaged, and they disappear back into the landscape as quickly as they appear. It is fascinating to realize that there are so many out there.

Another magical creature also calls the meadow home this time of year—the Argiope spider. I found one patiently waiting on its web as grasshoppers flitted past, and I knew that one would soon be caught in its web. As soon as I knelt for a closer look, one hopped into the web. It is always amazing to see how quickly the spider wraps its prey in silk.

Sorry, the video isn’t focusing on the spider in the beginning. It is hard to see what it is in focus because the screen on my phone is small and had a glare. I thought it was still worth posting.

Burnt Orange

There is a small grove of coastal redwoods at the arboretum. Underneath them, there is a small bench. I decided to sit on the bench to relax and let go of the busyness of the day. While sitting there, small branches occasionally fell out of the tree and landed on the bench. The vibrancy of the rich, burnt orange color of one of them caught my attention. While enjoying its color, I became fascinated by the shape and texture of the needles—narrow, pointed, and smooth. It was interesting to see the manner in which they were wrapped around a stem that must be underneath. It created such a beautiful pattern.

I put the small branch down on the bench. When I looked back at it a few minutes later, a small jumping spider had crawled up on it and was watching me. It was remarkable to see how its coloration matched the dead needles. I was reminded that there are so many wonders to behold in nature if I sit and take the time to slow down so that I can notice them.

Snowberry Still Blooming

With the end of August approaching, I am surprised to see that snowberry flowers are continuing to emerge. I looked back and found that I had taken photos of it flowering in May. I see many insects visiting the blooms, and I am reminded of how valuable this native plant is as a nectar source.

Bald-faced Hornet

Out at the end of this oak branch is a paper nest of the bald-faced hornet. The adult hornet is 5/8-3/4” long. They have black and white patterns on the face, thorax, abdomen, and first antennal segment. The wings are a smoky coloration.

The nest is constructed of wood pulp. I usually find a hornet on the posts of an old wooden fence along the river trail where they gather the top, soft layer of gray fibers. The nest is built in many layers of cells that are covered from the outside. In the end, the nest becomes this striated swirl of grays that is beautiful and sturdy.

The main entrance of the nest is placed at the bottom. This is easy to see in the second photo of the nest below. I just took this photo yesterday evening. This is the second attempt at building the nest. The first one was torn down. A serious word of caution. The adult hornets are very protective of the nest, and they will not hesitate to defend it if you get too close. They can sting repeatedly, and from my own experience, it is painful!

The diet of the adult consists of nectar, fruit juices, and perhaps eats other insects. The larva feed on insects that are pre-chewed by the adults.

In the late summer, the colony starts to produce males and young queens that will mate. The young mated females will overwinter in the soil or leaf litter—all of the other hornets will die off. The young queen will emerge next year to start a new colony.

At the bottom, there are a couple of photos of a bald-faced hornet on an oak limb that has these red nodules which I think are a type of gall. Maybe the hornets are attracted to these galls because the galls excrete plant juices that they can eat. I haven’t been able to find out more about it yet.

References
Milne, Lorus Johnson, and Margery Milne. The Audubon Society Field Guide to North American Insects and Spiders. Knopf: distributed by Random House, 1980.

Fly Larvae

Some flies stirred as I was walking down the path, and I looked over to see a dead snake. As I bent down to take a closer look, I saw that it was teeming with fly larvae inside its body. I was reminded of nature’s cycle of life. The purpose, strength, spirit, and medicine of so many unsung organisms that break down, transform, and recycle all of creation back into the stream of life are unbelievable.