If you have ever stumbled in your garden upon critters that look, at first glance, like Japanese beetles but prove to be different, you might have encountered June bugs. During summer, June bugs invade porches at nighttime, as they are drawn in by the lights. Ano ang mga kasabihan sa sa aking kababata? Fill a bucket with soapy water and throw them in there. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Pollinators and Pesticide Sprays during Bloom in Fruit Plantings, Orchard IPM - Integrating Neonicotinoid Insecticides. In summers with suitable rainfall amounts, beetles can reproduce in large numbers. Therefore, using a Pyrethrin-based insecticide in spring is a good idea because it will efficiently deal with most pests. Corn fields are known reservoirs for Japanese beetles. The location of these spines, known as the raster pattern, is used to identify some species. Pathogenic fungi, nematodes, and protozoans may help decrease grub populations. Talking about things they have in common, it must be mentioned that they prefer to congregate in groups, and they are good at flying. The number one reason they are considered pests is that their larval stage – when they are called grubs – can damage the soil. JavaScript seems to be disabled in your browser. In case you’re wondering where all the beetles come from, you should know that they didn’t necessarily fly from other areas, but they grew from their larvae right in your backyard. Apply a registered insecticide with a stomach poison to grassy areas in the spring (March–mid-May) or fall (September–November) to control grubs. June bug insects can be controlled though with a few steps. Courtesy of Steven Katovich, USDA Forest Service, Bugwood.org (#2121096). Courtesy of James Solomon, USDA Forest Service, Bugwood.org (#3066089). Therefore, turfgrass is the most affected by the larvae of both species. How long will the footprints on the moon last? For new seedling beds, till or disk several times in April–May or September to injure larvae in soil and expose them to parasite and predators. I was trying to find out what has attracted such swarms of them to my yard and not my neighbors, and then I realized the pictures of them look exactly alike. A soil with adequate moisture represents the ideal condition for that to happen. May beetles are considered invasive pests because of their tendency to … These wasps hunt the larvae, and they scout the fields in search of grubs. in North America north of Mexico, including about 86 in eastern North America.The many different species are difficult to distinguish. These wasps are not dangerous, and they prefer the nectar of flowers, so their lack of aggressiveness is another plus. An interesting fact about these wasps is that they identify the larvae in the soil, sting them, and then lay eggs. As adults, June bugs can be a minor nuisance, as they like to feed on nectar and fruits, but it is the larval stage that does most of the damage. Apply a registered insecticide as a preventative drench at the base of the plant, directed at the root ball/zone. Copyright © 2020 Multiply Media, LLC. When mature, June bugs eat very little, although they are big fans of figs, and they like to eat fruits that complement their diet based on nectar and pollen. They feed in groups as that gives them the ability to devour the food at their disposal as quickly as possible. At the end of the season, evaluate results and update records. Moderate–severe on seedlings. Their coloring is more metallic, compared to June bugs. So, when looking for signs of insect invasion in your backyard, then chances are to find both June bugs and Japanese beetles. Birds and toads consume many beetles in addition to a small quantity of grubs. All white grubs have a set of minute spines around the anus. However, in transplants, the most severe white grub damage generally occurs 2–3 years after field planting. These C-shaped, grayish-white grubs have tan heads and visible jointed legs. Also, green June beetles are green to copperish green in color and more pointed toward the anterior (head) end. Figure 2. What matters most is that these critters tend to attract others, so if you see a beetle in your garden, the chances are that more are invisible. However, if you observe beetles with a darker green, copper-like back, those are Japanese beetles. Their larvae can eat the grassroots, so they can be a problem if they grow in large numbers. While in their larval stage, they can grow to an impressive length of 2.5 inches (compared to their adult form), and it is now that they cause a lot of damage. All Rights Reserved. Some states recommend maintenance of groundcover to offer alternate food sources to grubs in the plantation. Allow the mixture to sit overnight, and then use it by spreading it on the areas you believe to have been overcome by the larvae. If more than one grub per hole is present, a preplanting treatment is recommended. The grubs prefer organic matter as it decomposes in the soil. In this process, they leave behind round holes in the surface that resemble puncture holes from a pencil. Root dip may be hard on trees, so in-field treatment is preferred. Threshold levels are for grubs in soil prior to planting. Seedlings and young conifer saplings discolored (reddish brown) in late summer to early fall, leading to eventual death, Lateral and taproots chewed off or girdled, Small holes, ¼–1⁄3 inch (6–8 mm) in diameter, in soil surface. Adults are dark brown to black beetles up to an inch (25 mm) in length. Japanese beetle, May and June beetle, masked chafer, green June beetle, European chafer, Asiatic garden beetle, oriental beetle, and black turfgrass ataenius. As mentioned earlier, June bug grubs can also damage the roots as they create their tunnels to reach the decomposing organic matter that makes most of their diet. No recommendations are available at this time. However, Japanese beetles are more efficient at devouring silks in cornfields and the leaves of soy plants, so they are a danger to such cultures. For low numbers of grubs, hand removal from tilled soil may be helpful. We have what I thought were Japanese Beetles swarming all over our yard today. Entomologists usually avoid calling them “June bugs” because “bug,” in its technical sense, refers to a completely different group of insects that are not beetles. Lady bug is bright red and june bug is darker orange/red These two relatively large, conspicuous beetles are being confused. Beetles, in general, are considered pests, although not on par with much more invasive species. This is when the grubs are mature and capable of severing the taproots. Most species have sparse yellow hairs on the body. They are capable of digging into the soil to find the white larvae and feed on them, so if you notice a population of wasps in the neighborhood, that’s not necessarily a bad thing. They all do the most damage in their larval stage, although some adults can also cause damage. Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae. As soil temperatures decrease in fall, grubs move lower in the soil. What matters most is that these critters tend to attract others, so if you see a beetle in your garden, the chances are that more are invisible. Through the summer, the larvae feed in the top 4 inches of soil. Seedling with grub feeding damage (left) and healthy seedling (right). Their strong mouth-parts are capable of cutting off taproots of smaller seedlings. LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, White grub damage to seedlings. Scarab larvae, or white grubs, overwinter in the soil (Figure 2). Adult Japanese beetles have rarely been reported to feed on tender bark during a serious outbreak (Figure 1). The beetle has quickly buzzing wings and tends to hover when it flies. They stick out, so it would be impossible for you to miss them. For instance, June bugs have a natural predator, which is the blue-winged wasp. They like young leaves, and while they do prefer agricultural fields, they eat everything they find, such as the leaves of shrubs and other plants. While there are equally significant differences between them about which we will talk a bit later, let’s focus on what makes their identification so confusing. Conifer fields planted adjacent to these could be more susceptible to grub damage. For starters, June bugs are larger than Japanese beetles, at about 1 inch in length; the latter are about one third in size compared to them. They were here yesterday as well - it rained Friday night and a very little bit yesterday. They burrow 8–10 inches (20.32–25.40 cm) below the soil surface to remain below the frost line overwinter. If you are 13 years old when were you born? These C-shaped, grayish-white grubs have tan heads and visible jointed legs. At the same time, it is safe for your plants, so you don’t have to worry about ruining your garden in your quest to get rid of all these critters. In a June bug vs Japanese beetle competition, you may find that they are both damaging for your garden, especially in their larval stage. June bugs tend to have a more pointed body shape toward the head, while Japanese beetles have a somewhat rounder shape. Why do we need this? When fully grown, these grubs create soil-encrusted cells before pupating near the soil surface.