Marble bug insect

Marble bug insect. Description, features, species, lifestyle and habitat of the marble bug

A bug insect with a beautiful name, the marble bug, is a serious threat to rural farmers. He is the leader in the ranking of pests for the crop industry in our country. Messages about his appearance resembles front-line reports with information about the penetration of the enemy into new regions. The full name of the alien is brown marble bug.

Description and Features

A species typical of a shield bug, similar to insects of its genus. The pear-shaped body of a slightly flattened shape is 11-17 mm long. The color of the developed bug is brownish or gray.

Spots of contrasting shades are scattered on the head and back, for which the characteristic «marble» is fixed in the name of the bug. From a distance, color transitions of different intensities have a copper, sometimes bluish-metallic tint.

The underside of the body is lighter than the top. Gray-black specks are present. Legs are brown, with stripes of white color. Antennae, unlike relatives, are decorated with light strokes. The membranous part of the front wings is marked with dark stripes.

Like other bugs of a large detachment of half-winged, the marble representative of the genus emits an unpleasant smell. A pungent stench conveys the “aromas” of a skunk, a mixture of burnt rubber, cilantro. The appearance of a guest is immediately felt, it is difficult not to feel it. The stink effect is designed to protect the bug from birds of prey, animals.

Among gardeners and gardeners he was nicknamed — a stink bug. The glands that produce the defensive substance are located at the bottom of the chest, on the abdomen. The thermophilic insect feels great when the air is warmed from 15 ° C to 33 ° C. The optimum comfortable environment is a temperature of 20-25 ° C.

Marble bug — a big problem for farmers. The insect destroys crops, fruits, many cultivated plants. The range of gluttonous bugs is constantly expanding. The origin of the malicious shield bug is associated with the region of Southeast Asia (Vietnam, China, Japan), where it was first recorded more than 20 years ago.

Then the bug was brought to America, Europe, distributed in Georgia, Turkey, Abkhazia, penetrated into Russia. It is believed that the immigrant was brought in with supplies of citrus fruits. Massive insect infestations are a serious threat to agricultural regions. Brown-marble bug is in the Unified list of quarantine objects approved by the Eurasian Commission in 2016.

Migrant began to develop the southern regions of Russia 3-4 years ago. The residents of the southern regions of our country experienced a mass pilgrimage to their homes, farm buildings with the advent of autumn 2017.

So, marble bug in Abkhazia destroyed more than half of the tangerine crop. Further, insects were found by residents in the suburbs of Sochi and Novorossiysk.

It turned out that a malicious guest is dangerous not only for the crop, but carries a threat to the person himself. The bug bite is sensitive for people with a weak immune system. The appearance of edema, itching, other symptoms provokes an exacerbation of allergies.

It is difficult to resist invasion because of its insensitivity to insecticides. There are practically no natural enemies for the stink bug, except for the parasitic wasp that lives in China and Japan. The objects of her interest are insect eggs. But since the pest itself is invulnerable, a partial loss of offspring does not affect its distribution across the continents.

The fight against the marble bug only gaining momentum. The ubiquitous resettlement of insects has already caused damage to the US economy by billions of dollars, for which the pest has been nicknamed the American. Scientists are developing tools to destroy the malicious shield bug.


Brown-marble bug is the only representative of its rank in biological systematics. It is not difficult for specialists to identify an insect. But in the areas of its distribution, bugs-bugs are found, similar in size, body shape, color.

You can determine the difference by studying insects using a magnifier with a 5-10-fold increase or by matching, as marble bug in the photo different from the usual summer cottage guards.

Wood bug. In summer, the green bug turns brown for masking in the fallen foliage in the summer. Significant harm to cultivated plants does not bring.

Nezara is green. Vegetable bug of green color with a transparent membrane. By autumn, changes color to bronze. The head and pronotum are sometimes light brown in color.

Berry Shield. The color changes to the color of the surrounding foliage: from a reddish-brown to dark brown. Boca, antennae marked by black and yellow stripes. Threats to the crop does not bear.

Despite the visual similarities, there are significant differences that are important to pay attention to:

  • the most important difference of a marble bug is the color of the antennas: the last segment is black with a white base, the penultimate segment is black with a white base and apex. This combination is not found in any other related species;
  • the size of most bugs is less than 1 cm — the marble pest is larger.
  • the body shape of the “familiar” bugs is more convex than that of an alien.
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The combination of the individual coloration of the antennae, size, shape of the clypeus allows us to accurately distinguish the variety of brown-marble bugs.

Lifestyle & Habitat

The vitality of a brown-marble bug is based on the unpretentiousness of the insect to its habitat. The insect is found on the street, in various buildings, cellars, farmsteads, apartment buildings, animal burrows, bird nests. The widespread distribution is not prevented by high humidity, a hot environment.

With the end of the growing season, bedbugs tend to penetrate people’s heated dwellings, find shelter in basements, sheds, where they penetrate through slots, vents. With a decrease in temperature, individuals are especially actively seeking places for wintering. Cases when the owner finds thousands of marble bugs in courtyards are not uncommon.

Insects hibernate under siding, clog into the gaps of the cladding. The wintering phase of the bugs is passive — they do not feed, do not breed during this period. Although insects that enter the premises mistakenly perceive heat for the arrival of spring, they gather around lamps, heat sources.

In addition to aesthetic discomfort, the potential impact of bedbugs on people is alarming. The disgusting smell that insects exude for protection is known. Excreted substance may cause an exacerbation of allergies.

Question, than to poison a marble bug, becomes very relevant. In living quarters, insects are collected manually, chemical-biological agents are used only in open areas.

In the spring, the activity of insects in the search for food, reproduction of offspring awakens. Pest invasions destroy the crops of many fields, destroy fruit trees, which undermines harvesting. In addition to direct harm, a brown-marble bug is a carrier of phytoplasmic diseases that affect many plants.

The damage is especially evident on the fruits of citrus and vegetable crops. Pierced by the trunk of a bug, the skin of the fetus opens the way for the development of necrotic processes. Structural changes begin, spoiling the appearance and taste of the fetus.

Development stops — immature fruits crumble, hazelnut kernels hang on the tree empty, rot affects grape berries. The bug is not spared grain, legumes, ornamental plants.

Get rid of a marble bug can be in many ways. During the development of larvae, the method of shaking off pests into umbrellas or ordinary tissue is used. In places with low numbers, visual inspection and the use of entomological nets are practiced.

Marble bug trap based on the use of pheromone is used in all types of plantings. An increase in the number of insects forces us to constantly look for new means of biological, chemical effects on the dangerous insect shield.

The brown-marble shield is omnivorous. In the spring he is attracted by young shoots of almost all garden crops. The pest at different stages of its development eats the same plants. Larvae and adults pierce the outer tissues of leaves, fruits, and draw out vital juice.

Necrosis forms on the fruit trees in the places where the bugs are affected, the surface of the stems is covered with tubercles, pathological tissue similar to cotton wool is formed in consistency. Fruits, not having time to ripen, decay, crumble ahead of time. Taste qualities of fruits, vegetables, citrus fruits are lost.

In the homeland of the brown-marble bug, in Southeast Asia, experts counted over 300 species of plants that are attacked by harmful insects. Among them, common vegetables are attacked by a bug: tomatoes, peppers, zucchini, cucumbers.

The insect regales on pears, apples, apricots, cherries, peaches, figs, olives, persimmons, corn, barley, wheat.

The pest feeds on legumes: peas, beans, does not spare pome fruits, stone fruits, berries. Forest species fall into the diet of the bug: ash, oak, maple, hazelnuts. Marble bug in Sochi, According to statistics from local farmers, Abkhazia has damaged 32 species of plants. In areas where there are no garden plantings, insects survive, develop on weed feed.

Reproduction and longevity

In a humid subtropical climate, only by November the bugs will subside, when adult individuals go into hibernation. Insects are unusually prolific — three generations of pests appear during the season:

  • the first generation develops from May to mid-June;
  • the second — from the third decade of June to early August;
  • the third — from the first ten days of August to the beginning of October.

Larvae go through five stages of development. It is noteworthy that in the process of growth they change color, which significantly complicated the identification of the insect at one time.

  • At the first stage, the larvae are red or bright orange, each length is 2.4 mm.
  • In the second stage, the color becomes almost black.
  • The third and subsequent stages are marked by brown-white larvae.

The diameter increases to 12 mm. Active reproduction of bedbugs in 2017 broke all records — instead of three clutches per season, scientists recorded six, which became an occasion for discussion of probable biodiversion at the official level.

Representatives of the Rosselkhoznadzor have already noted the facts of the import of harmful viruses into Russia, provoking infection at an unprecedented pace. The challenge ahead is by studying the DNA of a brown-marble bug, developing biological methods to reduce the population. The richness and diversity of the living world is customary to support. But the balance of organisms is no less important for the preservation of prosperous flora and fauna.

How to Seal Outdoor Statues

Things You’ll Need

Liquid dish soap

Soft-bristled scrub brush

Exterior masonry sealant

Clear paste wax

Outdoor statues can come in a variety of materials including concrete, marble and bronze. The statues will experience natural weathering and develop an antiqued or patina look over time. If you don’t seal the statue, it will begin to erode. Extreme hot and cold weather takes its toll on stone. Applying the proper sealant will protect the statue from crumbling due to exposure to sun, wind and rain.

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Concrete and Stone Statues

Step 1

Wait for a dry day to seal your statue, with no rain forecast for 48 hours after sealing.

Step 2

Fill a bucket with water and enough liquid dish soap to create suds. Dip a soft sponge or soft-bristled scrub brush into the soapy water and gently wash the statue from top to bottom.

Step 3

Rinse off the statue with water from the hose and let the statue dry completely for 24 hours.

Step 4

Dip a paintbrush into an exterior masonry sealer and paint the concrete or stone statue in smooth, even strokes. Start at the top of the statue and work down to the bottom. Don’t paint the underside of the statue with sealer. Let the statue dry for 24 hours.

Bronze Statues

Step 1

Wash the statue in the same manner as the concrete or stone statue. Let it dry completely for 24 hours.

Step 2

Dip a clean, soft cloth into a can of clear paste wax. Rub the wax onto the bronze statue, starting at the top. Rub on the wax in a thin, even layer and let it dry for 20 minutes.

Step 3

Buff the waxed statue with a second clean, soft cloth, by rubbing the dry wax layer until shiny. Repeat the wax application and buffing to add a second coat.

Marble Countertops: A Guide to Choosing & Maintaining White Marble

When it comes to selecting kitchen countertops, classic white marble remains the top choice for many homeowners. It’s no surprise that marble countertops are so popular—the material has been attracting fans for millennia. “It’s a natural material with great variety, depending on which species you select and how it’s cut,” says AD100 architect S. Russell Groves. “It creates a really lovely natural pattern, which you don’t get with a lot of artificial materials.”

“You won’t find anything as white in nature as white marble,” adds Evan Nussbaum, a vice president at Stone Source in New York. “You just don’t get that color and kind of figuring in any other type of natural stone.»

But it’s not a perfect product. While good-quality marbles, such as the world-famous products from Carrara, Italy, are dense and relatively nonporous—which makes them durable and stain-resistant—they also have weaknesses. A nonfoliated metamorphic rock, marble is generally composed of calcium carbonate (the same ingredient used in antacids such as Tums) or magnesium carbonate, which react to acids. An acidic kitchen liquid like lemon juice or vinegar will etch marble, leaving a dull, whitish mark where it has slightly eaten away the surface, even after the marble has been sealed. But as long as you choose carefully, know what to expect, and care for white marble countertops, they can be a beautiful, functional choice for your kitchen design that lasts a lifetime.

Types of Marble

Although many people automatically think of creamy, white stone when they think of marble, “there are hundreds of varieties,” says Jason Cherrington, founder and managing director of the U.K.-based stone company Lapicida, including types that are taupe, green, gold, red, and black. For marble kitchen countertops, however, Nussbaum generally recommends sticking with white. Because acid etching leaves a whitish mark, it is much more noticeable on colored marble than on white marble. “We put a thousand caveats on any dark marble or nonwhite marble being used for kitchen countertops,” he says, “but it’s a personal choice.”

While classic Italian white marbles like Calacatta and Statuario are generally excellent quality and a great kitchen idea, Nussbaum points out that equally high-quality marbles are available closer to home, including Vermont Danby and Colorado Yule.

How to Select Marble Slabs

Every stone slab is slightly different, so it’s ideal to select the exact pieces of stone that will be used for your countertops. “There’s an art to marble—selecting the slabs and understanding where the veining is going to be located on the countertop,” says Groves. “You want to artfully place the markings so that it’s almost like a painting.”

At the same time, it’s important to consider how different pieces come together. “The longer the piece you can get without any seams, the better,” says Groves. “If you do have seams, it’s always nice to book-match the marble,” so adjacent pieces have a mirrored appearance.

Veining in Marble

Every quarry is different, but it’s possible to cut certain types of marble blocks two different ways to achieve unique veining patterns. Cross cut, or fleuri cut, results in stone slabs with “an open flowered pattern,” says Nussbaum, which looks fairly random and is ideal for book-matching. Vein cut, or striato, slices the block the other way to achieve a linear, striped appearance.

“Designers have used both cuts to create some fantastic looks,” says Cherrington. “They may use vein cut on the wall and cross cut on the floor.”

Marble Finishes

“The whole stone industry has been going through a massive wave of technology, and it’s transforming the product,” says Cherrington, noting that there are now more ways than ever to finish stone, including different brushing and polishing techniques. An orange-peel-like texture is possible, he notes, which “might be called a leather, brushed, or river-wash finish.”

But the most popular choices remain polished, which looks glossy, or honed, which appears matte. For homeowners concerned about acid etching, Nussbaum recommends a honed finish. “On a polished finish, etching is going to turn it dull and be more visible,” he says. “With honed, you’re dulling an already dull finish, so it disguises it.”

Countertop Edges and Other Details

Besides its natural beauty, there’s a reason marble has historically been so popular for sculpture: It’s easy to work with tools. Add modern computer numerical control (CNC) milling machines to the equation and almost anything’s possible for kitchen decorating.

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There are countless edge profiles to choose from, but Groves prefers a simple eased edge, which takes the sharpness off a straight 90-degree corner. Cherrington points out that a bull’s nose, which has the profile of a half circle, is also a timeless favorite and functional winner. “Hard stones like marble are brittle, so if you hit a 90-degree corner with something hard, it will chip,” he says. “With a curve, it’s highly unlikely that it’s going to chip.”

To give thin ¾-inch stone the look of a thicker slab, Groves says it’s possible to use a miter joint at the edge of the countertop to add a thicker face with an almost seamless appearance. “You can build up a really nice thick-looking piece without having to use a thick slab,” he says.

It’s even possible to engrave the edge of a white marble countertop with a pattern of your choosing, says Cherrington, noting that Lapicida has developed marble tables featuring a carved brogue pattern on the edge in collaboration with designer Bethan Gray.

Maintaining Marble Countertops

Finishing marble countertops with a penetrating sealer is essential for long-term performance, says Nussbaum, “but not a magic bullet.” Acids will still etch the surface. Fortunately, if the countertop has a honed finish, an etched mark can usually be removed by scrubbing with a Comet paste using a Scotch-Brite pad, he says. If it’s a polished surface, it will require different abrasives and technical skill, which might best be left to a professional. If the marble does get a stain, it can often be removed with an alkaline poultice that gradually pulls the offending material out of the stone as it dries. But any of these interventions will also strip the sealer, he notes, so it needs to be reapplied after the repair.

“The good thing about marble is that you can always sand it down or polish it again,” says Groves. “With a lot of other materials, once you damage it, you can’t do that.”

However, the best way to live with marble countertops may simply be to accept that they will patina over time. “If you’ve been to an old bakery or pizza shop and seen how white marble patinas, and like it,” says Nussbaum, “then it could be the perfect material for you.”

10 Best Bug Spray and Mosquito Repellents to Buy in 2020

Here’s how to keep your family bite-free this summer.

Finding the best bug spray and mosquito repellents on the market isn’t just in your family’s best interest—it’s practically a can’t-do-without necessity. Odds are, it’s always on your camping checklist and has become a must-have as you look ahead to the summer months.

Enter our list of 2020’s most in-demand bug sprays. While we can’t promise to know how to prevent mosquito bites from happening at all, we can at least help you stand a fighting chance. And when it comes to the never-ending battle against those pesky flying insects, that’s no small feat.

Here, in tandem with the latest research from Consumer Reports and hundreds of honest Amazon reviews, we’ve gathered together the spray bottles, wipes, and lotions to help you emerge as unscathed as possible from this year’s summer picnics. From deet-based products like the popular OFF! Deep Woods Dry Insect Repellent to plant-based eucalyptus oil wonders, you’ll be able to find an item on our list that suits your needs. We’ve even narrowed it down by category—»Best for Families,» «Best for Skin,» «Best Wipes,» etc.—to make the choice easier.

P.S. Still inundated with pests? We’ve also got information on how to get rid of stink bugs and how to get rid of gnats.

There’s a reason this mosquito repellent appears on Consumer Reports lists year after year. It’ll reliably protect you and your family against mosquitoes as well as biting flies, ticks, gnats, and more using deet.

This pump spray bottle is incredibly easy to apply, and small enough to carry on long camping trips. It also features a floral fragrance.

Looking for a deet-free formula? You’ll want to try Repel’s plant-based repellent, which not only steers clear of the chemical, but also boasts a lemon eucalyptus scent. Products that contain at least 30% «oil of eucalpytus» has been deemed effective in warding off insects for at least 7 hours.

In tests, products with the ingredients IR3535 and 2-Undecanone were less effective than products that contained deet, picaridin, and OLE. Still, this Coleman SkinSmart repellent is relatively safe to use and has other benefits: It’s non-greasy and inexpensive.

Those who are less interested in deet-based products can also opt for a picaridin repellent. This synthetic repellent is effective as long as the ingredient makes up at least 20% of the product in question, claims Consumer Reports.

«One wipe was enough application for me, my mom, and 2.5 month old baby,» reads one glowing review of these wipes on Amazon. «They worked well and no one had bites!! Pleasant smell. Definitely recommend!»

All Terrain is a great brand to try for anyone looking to protect their kids. This repellant boasts natural ingredients and a reasonable price range.

This repellant won’t stain or damage your clothing, and will keep you safe all the same. It’s particularly effective against the Yellow Fever Mosquito, which can transmit Zika.

Who says bug spray needed to be, well, «spray»? This 34.34% deet product offers protection against insect bites in a totally different package.

Another no-spray option, the Cutter All Family Mosquito Wipes are as gentle on skin as they are tough on flying pests.

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