Month: July 2022

My, what big jaws you have my dear: Reddish-brown Stag Beetle, Lucanus capreolus

 

Do the impressive jaws of a male reddish-brown stage beetle strike fear in your heart?

 

Is the pretty female stag beetle a little less scary than its mate?

Well, we all know what happened to Little Red Riding Hood when she uttered similar words to a big, bad wolf posing as grandma. But fear not, the extremely large jaws of the male reddish-brown stag beetle are used to impress a potential mate, or to battle other males for mating rights to a comely and much smaller-jawed female stag beetle. Stag beetles are relatives of rhinoceros beetles we met in a previous episode. Male rhinoceros beetles, like our indigenous Hercules beetle, use prodigious horns on their head to battle competitors for access to females. Stag beetles dwell in damp forest woodlands (and apparently sometimes in my back yard), where females seek soggy tree holes like the one in my ancient maple or moist rotting stumps on the forest floor. Wet decaying wood serves as the favored location for female beetles to deposit eggs.

Watch as this pretty reddish-brown female stag beetle inspects the soggy interior of a large tree hole in my ancient red maple tree. She was rather nonplused about the camera and stopped a few times to glam for the cam. With some luck, perhaps she will find a mate and grace my rotting tree with a fine batch of lucanid grubs.

Larvae of stag beetles are quite similar in appearance to this rather large scarab grub.

Larvae, aka grubs, that hatch from these eggs take two years to develop as they feed on lignified tissues of their woody hosts. Stag beetle larvae house a rich microbial community in their gut. These symbionts release nutrients locked in tough woody tissues, making these goodies available to support the growth and development of stag beetle grubs. Along with several other species of wood digesting insects, lucanid larvae play a critical role in recycling organic matter in forests around the world. Adult lucanid beetles are reported to dine on fermenting exudates of plants. The important role of these forest recyclers is imperiled as forested lands disappear. A close relative of our reddish-brown stag beetle, the charismatic Lucanus cervus, has declined dramatically in some parts of Europe.

Stag beetles are noisy, somewhat clumsy fliers and create quite a buzz as they zoom though the forest or zero in on your porch light at nighttime. If you are a bug geek like me, you might just want to hold one of these reddish-brown stag beetles. Worried about those jaws? Don’t be. I have never had any issues holding males or females other than trying to release them when I was finished examining one. They have very sticky claws at the tips of their feet which enable them to climb trees and grip tightly to nosy humans. According to the Maryland Biodiversity Project, July is an excellent month to spot these fascinating creatures here in the DMV. Head for the forest to catch a glimpse of these giants of the beetle world.

Watch this amazing National Geographic video to see how stag beetles use their supersized jaws to defeat competitors and gain access to mates: https://www.youtube.com/watch?v=-VWFreC4onI

Acknowledgements

Bug of the week consulted these references for this episode: “Stag beetles” by Eric P. Benson,“Divergence in Gut Bacterial Community Structure between Male and Female Stag Beetles Odontolabis fallaciosa (Coleoptera, Lucanidae)” by  Xia Wan, Yu Jiang, Yuyan Cao, Binghua Sun and Xingjia Xiang, and “Insights into the ecology, genetics and distribution of Lucanus elaphus Fabricius (Coleoptera: Lucanidae), North America’s giant stag beetle” by Michael Ulyshen, Louis  Zachos, John Stireman, Thomas Sheehan, and Ryan Garrick.

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Waxy wanderers flocking flowers: Planthoppers – Flatidae and Acanaloniidae

 

See how many flatid nymphs you can find hiding amongst their white wax on this branch.

 

Strange looking acanaloniid nymphs remind me of the fierce Blurrg of Mandalorian lore.

Last week we visited dastardly Japanese beetles shredding leaves of zinnias. On a follow-up visit to the flowers, I was surprised to see several stems festooned with fluffy white wax reminiscent of the mysterious substance from an aerosol can used to flock Christmas trees. Beneath the white flocking were nymphs of small sucking insects known as flatid planthoppers. Nearby a bizarre acanaloniid nymph baring a strange resemblance to a miniature Blurrg wandered about a flower stem trailing an array of waxy filaments from its rear end. These sucking insects are close relatives of other well-known wax producing sap-suckers such as boogie-woogie aphids and woolly alder aphids we met in previous episodes.  

Two kinds of sap-sucking planthoppers are flocking my plants with white wax. The strange brown planthopper on top is an acanaloniid and the greenish one hiding below in white wax is a flatid nymph. When the lens gets too close the flatid hops to a leaf below and takes a stroll. The acanaloniid nymph meanders up the stem to escape a nosy bug geek.

It’s not unusual to find ranks of waxy adult citrus flatids lining stems and branches of many kinds of plants in the summertime.

Flatid and acanaloniid planthoppers feed by inserting a small beak into the vascular system of a plant and withdrawing the nutrient-laden sap into their bodies using a small hydraulic pump located in their head. As a byproduct of this feeding, they excrete a sticky substance called honeydew that attracts other insects such as wasps and ants and serves as a substrate for the growth of a fungus called sooty mold. They also secrete a pure white wax from glands lining their abdomen. The function of this wax may be to protect them from tiny parasitic wasps determined to deliver a sting and deposit eggs into their bodies. Or the wax may confuse hungry predators such as lacewing larvae and ladybugs intent on a feast, that are bamboozled when they get a mouthful of white wax instead of planthopper flesh. Whatever the purpose of the wax, it is produced in prodigious amounts by flatids and acanaloniids.  

Leaf-mimicking cone-headed planthoppers are masters of disguise.

Planthopper nymphs hatched this spring from eggs inserted in the stem of a plant last year by the adult planthopper. Now the nymphs are beginning to molt and will soon become adult hoppers that will remain on our plants for the duration of summer and into autumn. Adult flatid planthoppers do not produce vast amounts of wax as they did in their youth, but their bodies are coated with a lovely bloom of grey, green, or bluish wax. Acanaloniid adults are tiny leaf mimics with myriad wing veins resembling the veins of leaves. They blend in remarkably well with the plants on which they feed. Flatids and acanaloniids are common on roses, dogwoods, locusts, privets, hollies, maples, and many herbaceous perennials and annuals. Flatid planthoppers have been reported to cause the terminals of small plants to droop due to their feeding. Females inserting large numbers of eggs into the stems of plants may also cause small branches or seedlings to wither. However, in general, flatid planthoppers cause very little injury to plants in our gardens and the use of insecticides to eliminate them is unwarranted. With the arrival of hot, humid, dog-days of summer, their holiday flocking seems to be a welcome reminder of cooler times to come.  

Acknowledgements       

The fact-filled articles “Histories of Anormenis septentrionalis, Metcalfa pruinosa, and Ormenoides venusta with Descriptions of Immature Stages” by S. W. Wilson and J. E. McPherson, and “Planthoppers” by Steven Frank, James Baker, and Stephen Bambara were used to prepare this episode.

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Feasting and frolicking spell trouble when Japanese beetles, Popillia japonica, arrive

 

Volatile chemicals released by damaged leaves and sex pheromones released by female Japanese beetles result in a rambunctious feeding frenzy and love fest on infested plants.

 

Lindens, a favorite host for Japanese beetles, can be severely damaged when beetles are numerous.

While enjoying the flower garden last week, my reverie was disturbed by the appearance of some very raggedy leaves on the zinnias. A closer inspection quickly revealed the culprit behind this assault, dastardly Japanese beetles. Historically, late June and early July are the months of misery when Japanese beetles abound, and these mischief makers have arrived right on schedule. The first detection of Japanese beetle in the United States occurred in 1916 in a plant nursery in New Jersey. They likely arrived with plant material imported from Asia, as grubs in the soil or as adult stowaways in the foliage of plants. Japanese beetles are extreme foodies with more than 400 kinds of trees, shrubs, vines, and herbaceous plants on the menu. Among their favorites are sassafras, lindens, maples, apples, cherries, grapes, roses, and apparently, my zinnias. In a series of studies, entomologist Dan Potter and his colleagues in Kentucky found that roses with large, light colored blossoms, particularly yellow or white, were more attractive to Japanese beetles than varieties with smaller, darker blossoms of red or orange. In the tree realm, researchers noted that lindens with densely hairy leaves were less preferred than scantily haired varieties. Maples with purple or deep red leaves were preferred over those with green leaves.

Traps collect large numbers of Japanese beetle but plants near traps may be damaged when beetles assemble nearby. Place traps away from plants you want to protect.

You may have noticed that Japanese beetles often attack one plant severely, leaving a lucky neighbor relatively unscathed. When these invaders initiate an attack, specific odors are released by the damaged plant. These send a signal to other beetles, something like “good food, eat here.” This foliar attractant is compounded when female beetles release a chemical message called a sex pheromone. The sex pheromone says to the guy beetles, “how’d you like to spend a little time with me?” Not surprisingly, a rambunctious love fest and feeding frenzy erupt, and in the process, your plant takes a beating. Clever chemists have been able to synthesize both a floral attractant released by plants and the Japanese beetle sex pheromone and place them in a lure. Attach the lure to a few plastic fins for beetles to bump into, and a funnel to direct them into a plastic bag and, voilà, you have a Japanese beetle trap.

Japanese beetle traps capture beetles by the thousands, but traps may not be all that effective in protecting your plants. Plants near the traps may actually sustain more damage as beetles lured to the vicinity mill around awaiting their turn to hit the fins and be captured. It is best to place these traps far away from valued plants you want to protect. Japanese beetles lay their eggs in soil, so if adult beetles are a chronic problem in your garden or landscape, the best way to get relief may be to reduce the numbers breeding in your lawn, especially if you have irrigated turf. One promising “organic” approach is to apply insect pathogenic nematodes, tiny roundworms that attack and kill beetle grubs. Nematodes enter the grub and release a lethal bacterium. There are many different species and strains of nematodes. Dave Shetlar of the Ohio State University suggests that products containing strains of Steinernema carpocapsae nematodes are a bit less effective against beetle grubs than species in the clan named Heterorhabditis. If you go the nematode route, you must wait to make an application until late July or August when grubs are in the soil. A second formulated microbial insecticide that shows promise is Bacillus thuringiensis galleriae, which has been demonstrated to reduce feeding by adult beetles when applied to foliage.

Larvae of many species of scarabs, including Japanese beetles, are called white grubs. They damage roots of plants.

There are several potent soil insecticides that can be applied in late July through August that are very effective in killing tiny grubs as they hatch from eggs and feed near the soil surface. If you opt for the synthetic chemical route, choose wisely. We now know that at least one class of insecticides called neonicotinoids applied to turf grass can be taken up by clover growing in turf. Bumble bees foraging in this clover may be harmed. However, a newer class of insecticides called the anthranilic diamides present far fewer risks to our hard-working pollinators. When using any insecticide, always read the label and follow the directions carefully and pay particular attention to warnings pertaining to beneficial insects like bees.

Mammals including skunks and raccoons damage lawns as they hunt for white grubs of Japanese beetles and other scarabs in soil.

Many insecticides are available to control adult Japanese beetles on plants, but multiple applications may be necessary if you cannot tolerate damage by these critters. As with turf applications, be cognizant of beneficial insects foraging on plants. Read and follow label precautions. Another nifty way to help reduce damage is to simply knock the beetles from your plants into a bucket of soapy water. If you do this early in the season of evil when beetles first arrive, you may reduce the chemical cues that incite a feeding frenzy. Beetle removal may be most successful in early morning or late evening when beetles are less active. There is a strange kind of justice in drowning this pest in soapy water or capturing them in traps. Save the bodies of the little rascals captured in your bucket or trap. The earthly remains of so many beetles make a wonderful addition to a compost pile that can later be used to nourish your garden.

The 4th of July heralds the arrival of Japanese beetles and flowering plants are now under attack. Volatiles from leaves shredded by beetles and sex pheromones released by females bring more beetles and damage to infested plants. Knocking beetles into a jar of soapy water when just a few are on a plant may derail the feasting and love fest. Japanese beetles are poor swimmers and after they expire, I add their tiny bodies to my compost. From soil they came, to soil they return.

Acknowledgements

Excellent references including “Assessing Insecticide Hazard to Bumble Bees Foraging on Flowering Weeds in Treated Lawns” by Jonathan L. Larson, Carl T. Redmond, and Daniel A. Potter and “Strengths and limitations of Bacillus thuringiensis galleriae for managing Japanese beetle (Popillia japonica) adults and grubs with caveats for cross-order activity to monarch butterfly (Danaus plexippus) larvae” by Carl T. Redmond, Lindsey Wallis, Matthew Geis, R. Chris Williamson, and Daniel A. Potter were used to prepare this episode. Our thanks to Dr. Shrewsbury for assistance in sending beetles to a better place.

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How to Keep Bats Out of the Attic

Keep Bats Away From Your Home Using These Helpful Tips

Bats can be beneficial and even likable creatures to have around — but not when they make their home in your attic. All too often, people fear and misunderstand these flying mammals, which can improve outdoor spaces by eating large volumes of insects. In fact, some can eat 1,000 or more per hour 

Having the winged critter nearby might be helpful, but bats aren’t creatures you want to invite indoors as waste materials that collect on surfaces can spread diseases and cause damage.  

Professionals can help you create a plan to prevent bats from getting into your home. Catseye Pest Control also has a comprehensive solution to remove them in addition to keeping them out of the attic and other interior spaces.

Reasons to Keep Bats Out of the Attic

Bat droppings, commonly referred to as guano, serve as an ideal environment for the growth of the fungus responsible for Histoplasmosis, a respiratory disease spread through airborne spores.  

For some people, breathing in these microscopic spores doesn’t cause any problems. However, others may develop a fever and/or cough. Still others can develop severe infections and compromised immune systems. 

Bats also potentially carry rabies. In fact, the United States Centers for Disease Control and Prevention (CDC) classifies bats as the number one cause of rabies-related deaths among Americans. 

Aside from the potential illnesses that bats can cause, accumulations of bat guano and urine may cause unpleasant odors. Even worse, those droppings can compromise sheet rock, ceilings, insulation, and building structures.  

Bats also tend to scratch their way into insulation in search of warmth, and they can chew on wires and walls, resulting in cosmetic and structural damage.

Signs Bats May Be in the Attic

Sights, smells, and sounds are likely the biggest signs that warn homeowners or business owners of the presence of bats. For example, piles of droppings found near the entrance of the attic or urine stains on insulation.  

It is also possible to notice strong smells, particularly those caused by the ammonia in bat urine. Noises like squeaking and scratching can also be a telltale sign.  

little brown bat with its mouth open in a blue-gloved hand, blurred dark background

Bat Species that Might Move into Your Attic

Curious about the bat species that live in our region? A variety of bat species live in Massachusetts, Rhode Island, Connecticut, and New Hampshire. Some common species found in the area include the following: 

  • Big brown bats usually live in caves but also enjoy warm, dry areas like attics, crawlspaces, and chimneys. They have fur in varying shades of brown and feature black markings on their faces, wings, and ears. The impressive wingspan averages 13 to 16 inches. 
  • Little brown bats are often found in attics, under floorboards, and in soffits. They are tiny — with bodies roughly the size of an adult’s thumb. Little brown bats typically have brown fur and dark spots on their upper bodies and have a wingspan that stretches approximately 11 inches. 
  • Eastern small-footed bats are an endangered species, which means they must be carefully removed by a reputable pest and nuisance wildlife management company — like Catseye. These bats have tiny back feet that measure seven to eight millimeters in length. They have a characteristic black mask, black ears, and black wings. 
  • Indiana bats are common throughout the East and are known for roosting in colonies. They have dark gray or brown fur that looks similar to brown bats. Their small bodies measure between two and four inches long but the wingspan ranges from nine to 11 inches. 

Tips to Keep Bats Out of Your Attic

One of the best ways to keep bats out of the attic is to identify the areas being used as entrances. Points of entry can include damaged areas of a roofline, gable vents, or gaps in siding. 

Bats like to nest in dark spots that allow them to come and go easily for their nightly feedings. Because the critter is flexible and small, most species can enter homes through openings that are as small as the diameter of a dime. 

Not only can bats fit through open vents, but they can also enter through tiny cracks and crevices to roost inside your home where it’s dry and warm. These tips can provide added peace of mind and help to keep the attic bat-free:  

  • Cover vents: Don’t completely seal vents; instead, use screening to allow proper ventilation while keeping bats and other pests out. 
  • Cap the chimneys: Your chimney provides an easy entry point for bats. Cover it with screening or install stainless steel chimney caps with quarter-inch wire mesh to keep bats out.  
  • Check windows and doors: Ensure that there aren’t any holes, gaps, or improperly fitted screens — all of which can allow bats entry into your home. Although it is rare for a bat to enter a structure through an open window or door. 
  • Seal points of entry: Seal holes around the exterior of the home and around doors and windows with weatherproofing strips, silicone, caulk, or foam insulation to provide a barrier to keep bats out. 
  • Change your outdoor lighting: Switch from incandescent outdoor light bulbs to yellow bulbs or bulbs that repel bugs, which are bats’ primary food source. 

Call Catseye for Professional Removal & Exclusion Services

Bats are nocturnal and exit their homes just before nightfall to locate insects to feed upon. If you think there are bats in the attic of your home, try walking around the exterior at night to watch for bats to locate exit points.  

These openings will need to be properly sealed to prevent further intrusions — after making sure the bats are safely removed, of course.  

Catseye’s comprehensive bat removal program does more than just evict these creatures. Our expert technicians conduct multiple visits to remove them permanently and humanely. 

Our exclusion team will seal up potential points of entry to the home and install a one-way door. The door is designed to allow bats to leave the home but prevents them from reentering. 

Once the bats are no longer occupying the home, the one-way door is removed, and the hole is sealed. Then we clean up the bat droppings and urine and disinfect the area. 

Contact us today to learn more about our nuisance wildlife removal and pest control services or to schedule a free inspection. 

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Tick-Borne Virus Kills Connecticut Resident

Learn More About the Powassan Tick-Borne Virus, Including Which Tick Can Spread the Disease & How to Protect Yourself 

The Powassan virus is rare, but it can be deadly, and cases seem to be on the rise. From 1958 until 1998, only 27 cases were reported around the world, but in the last two decades, the number of cases increased by more than 600%.  

Recently, there has been an upward trend of tick-borne diseases throughout the Northeast and many other places that are prone to ticks.  

Recent news revealed that the Powassan virus has now claimed its second victim in as many months this year. The first Powassan-related casualty of 2022 occurred during the month of April in Maine. Just one month later, a Connecticut woman in her 90s also died from the Powassan virus. 

In the most recent case, the woman became ill at the beginning of May. When she went to the hospital, she had a fever, chills, chest pain, nausea, and an altered mental status. Two weeks before experiencing symptoms, she was bitten by a tick.   

These occurrences emphasize the importance of tick prevention. But before exploring ways to prevent tick bites, let’s take a closer look at what Powassan is and the steps you can take to protect yourself and your loved ones. 

What is the Powassan Tick Virus?

Until recently, the Powassan virus was among the lesser-known tick-borne viruses. However, the virus is steadily becoming more common in areas like Massachusetts, Connecticut, New Hampshire, and Rhode Island. It spreads to humans after they are bitten by infected ticks.  

Ticks contract the virus after feeding on infected rodents, including mice, squirrels, and groundhogs. The most common ticks responsible for transmission of the Powassan virus are the black-legged or deer tick, which are known to feed on deer, white-footed mice, and humans.  

Many people who get infected with the Powassan virus experience no symptoms at all. Others typically feel ill within one to four weeks after being bitten by an infected tick. The virus can cause inflammation in the central nervous system, including the brain and spinal cord. Symptoms of the Powassan virus can include: 

  • Headache 
  • Fever 
  • Nausea and vomiting 
  • Weakness and confusion
  • Trouble moving around; lack of coordination 
  • Difficulty speaking 
  • Seizures 

For those with severe forms of Powassan disease, death can also occur. The Center for Disease Control and Prevention (CDC) estimates that one out of every 10 patients with severe Powassan dies.  

How to Protect Yourself 

The best form of protection against tick-borne illnesses is prevention. Tick viruses are always a concern, but especially as the temperatures rise and we spend more time outdoors.  

To prevent tick bites, it helps to be aware of where the pests like to hang out. These tiny bloodsuckers prefer wooded areas, brush, and tall grass. You could be exposed while hiking, walking, gardening — essentially any outdoor activity during the warmer months.  

After spending time outside, do a thorough check to look for ticks before the pest has a chance to settle in and bite.  

To check for ticks, thoroughly examine clothing, shoes, and exposed areas of the body. Ideally, disrobe and use a mirror to check all areas of skin. Ticks can bite anywhere, but be sure to pay special attention to certain areas, including: 

  • Underarms 
  • Behind the knees 
  • In and around the hair 
  • Inside and around the ears 
  • Inside the belly button 
  • Head and neck 
  • Groin  

Unlike Lyme disease, Powassan transmission happens quickly, typically within minutes of getting bitten. That’s why bite prevention is particularly important for Powassan, although it’s always good practice to avoid ticks of all types. 

Keep ticks away by treating gear and clothing with products that contain 0.5% permethrin, which has the protective power that stays strong even through multiple washings. Use insect repellents that contain oil of lemon eucalyptus, DEET, or another option approved by the Environmental Protection Agency (EPA).  

Lastly, don’t forget that it’s possible to get a tick bite in your own backyard. Keeping grass and shrubs neatly trimmed, cleaning up debris, and getting help from professionals can serve as a shield of protection to restore your peace of mind. 

How Professional Tick Control Can Help

Powassan isn’t the only tick virus to consider in 2022. Lyme disease, anaplasmosis, and babesiosis are a few other tick-borne viruses carried by the black-legged tick. Catseye Pest Control offers a comprehensive Tick Control Program that eliminates the threat of ticks and helps to defend the property throughout the warmer months.  

Service begins with a thorough inspection of the property to determine the best course of action. Based on those findings, Catseye creates a customized treatment plan to eliminate the threat of ticks and a strategy to prevent tick infestations in the future. 

Ready to get started? Contact Catseye today to learn more about how professional tick control can help protect your property by starting with a free inspection.  

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Small, strange bugs with very long legs: Stilt bugs, Berytidae

 

A stilt bug ponders its next move at the edge of a zinnia leaf. Credit: Paula Shrewsbury, UMD

 

Amazingly long legs transport the stilt bug across a hairy leaf surface. Note its super long antennae.

Last week we witnessed the life and death struggle of thrips as they dodged fierce minute pirate bugs in cone flowers. Just down the flower bed from the cone flowers, a patch of zinnias sported a wide array of six-legged visitors, Japanese beetles, planthoppers, and a gangly member of the true bug clan, a heteropteran known as a stilt bug. In a previous episode we met fast moving stilt-legged flies snacking on tidbits of cheese and pretending they were ants on leaves in a rainforest. This week’s long-legged wonders seem to be mostly stuck in slow motion as they amble across vegetation in search of a meal or a mate. One common species here in the DMV, Jalysus wickhami, dines on more than four dozen species of plants in some seventeen plant families, most of which have been described as “glandular-hairy.” Due to their behavior of jabbing their pointy beaks into stems, flowers, and fruits to suck out nutritious cell contents, they can be severe pests of tomatoes grown outdoors and in hot-houses. When fed upon by stilt bugs, tomato flowers and stems can turn black and die. Feeding punctures can distort and discolor tomatoes making them unsalable.

This mating pair of stilt bugs certainly is not camera shy. The bug on the right is the female; the male is on the left. Watch as the female multitasks, grooming her legs while engaged with her mate. She collects a drop of fluid from her beak with her middle and hind legs and appears to apply it the surface of her hind leg. How curious is that?

A second species of stilt bug common in our region, Jalysus spinosus, is more of a specialist, feeding and breeding primarily on grasses in the genus Panicum. Ah, but like many of us, while the vegan diet may be a healthy one, every now and then a little meat doesn’t hurt, and stilt bugs can be important predators of insect pests, consuming eggs of hornworms, aphids and other small soft-bodied pests in a variety of crops. Nymphs and adults of J. wickhami have been raised and released in tobacco fields to augment activities of predatory insects already present in the crop. In addition to the two Jalysus species mentioned above, the Maryland Diversity Project lists Berytinus minor and Neoneides muticus as residents of our region. So, next time you visit your gardens and flower beds, keep a sharp eye out for these interesting tiny omnivores with unusually long legs.

Acknowledgements

Bug of the Week thanks Dr. Shrewsbury for her image of a stilt bug. Details of the life history and ecology of stilt bugs were extracted from these interesting references: “Jalysus spinosus and J. wickhami: Taxonomic Clarification, Review of Host Plants and Distribution, and Keys to Adults and 5th Instars” by A. G. Wheeler and Thomas Henry, “Spined Stilt Bug” by Michael Skvarla, and “Spined Stilt Bug in Tobacco” by Peter Nelson and Hannah Burrack.

This bevy of stilt bug nymphs are “beaks in” on this tender flower stem.

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