Could and June beetles, additionally referred to as June bugs, are garden and backyard scarab beetles identified largely for consuming vegetation and ornamentals as adults and inflicting important harm to turfgrass of their larval stage. Though they go by totally different names (Could or June beetle), they really make up a genus of about 300 species of beetles which might be part of the subfamily Melolonthinae (household Scarabaeidae, order Coleoptera). When most consult with the Could or June beetle, they’re principally addressing the identical beetle.
The Could and June beetle are infamous pests situated within the Northern Hemisphere. Usually noticed within the late spring or early summer time, the Could and June beetle are named after the months they start to seem. Chances are you’ll usually see them flying throughout a lightweight, or caught in a window display screen at evening as they’re largely nocturnal. They’re clumsy flyers and will be heard flying into doorways or home windows.
What are Could and June beetles?
As beforehand talked about, the Could or June beetle primarily belongs to the Scarabaeidae household together with chafers and Japanese beetles.
Could and June beetles are identified largely for his or her larvae or harm to ornamentals and turfgrass. Grownup Could and June beetles eat plant leaves and ornamentals whereas their larvae, known as white grub worms, eat roots or different decaying plant materials within the soil.
What does a Could or June beetle seem like?
Could or June beetles aren’t the shiny inexperienced beetles you generally see round this time of 12 months. These are Japanese beetles. Though they’re intently associated, the Could or June beetle ranges from reddish-brown in shade to virtually black with none patterns like spots or stripes.
They normally vary from 0.5–1.0 inches in size and are barely bigger than the masked chafer, which is about 5/8–7/8 inches lengthy.
Could and June beetle larvae, white grub worms, have the power to utterly destroy a whole garden given the correct amount of time if there are a big quantity beneath the soil’s floor. Sure grub worm species reside as a grub worm for just one 12 months earlier than changing into an grownup beetle. Sadly, the Could and June beetle’s larvae take about three years to finish their life cycle, wreaking havoc in lawns for an extended time frame.
Their larvae are C-shaped, white or cream-colored worms with six legs situated close to the entrance of their our bodies. In addition they have a brownish-red head.
Pictured above: A Could/June beetle and its larvae.
What do Could and June beetles seem like?
These bugs love consuming vegetation. They’re strictly herbivorous and eat ornamentals and tree and shrub leaves. This makes them an enormous hazard for many gardens because the vegetation function a great supply of vitamin.
Could and June beetles additionally appeal to loads of predators. These embody snakes, skunks, moles and a number of other others.
What time of 12 months to Could and June beetles come out?
The Could or June beetle emerges in late Could and early June (hints its identify). They are usually lively in the course of the evening and are drawn to lights. As soon as the adults mate, the females dig a number of inches into the soil to deposit eggs.
There are totally different locations the place the feminine beetle can lay its eggs, but it surely largely prefers doing this close to a tree. These eggs then type grubs, which might dwell underground for 1–3 years as they go by progress levels referred to as “instars”. Every year, they grow to be bigger and extra harmful.
As soon as they’ve reached their third 12 months, the larvae begins to pupate within the soil across the late summer time or fall. That is adopted by their grownup varieties rising the next spring and beginning the cycle over.
It’s not unusual for overlapping generations to happen in order that adults are noticed yearly.
How do I establish a Could or June beetle drawback?
The most effective factor you are able to do to establish a Could or June beetle is perceive what they seem like and signs of infestation. One of many best methods to find out if this insect is residing in your panorama is by digging up a small patch of filth and visually recognizing grub worms.
One other method to inform if grubs are current is by noticing brown patches of useless grass. The bottom will usually really feel spongy and the grass will probably be straightforward to elevate as if it have been a chunk of carpet.
This doesn’t all the time imply the grubs are particularly larvae of the Could or June beetle although.
One other thought could possibly be to keep watch over insect exercise round any outside lights at evening. You might be able to spot their grownup varieties.
Furthermore, you must hold an eye fixed for varied predators like moles, skunks and snakes as a result of all these creatures feed on the Could and June beetle, indicating that your floor has them beneath the soil.
How do I deal with a Could or June beetle infestation?
Figuring out and confirming Could or June beetle presence is merely step one in direction of a beetle-free garden. You must clearly know the place and how one can eliminate them. There are primarily two methods of clearing the beetle species out of your garden. These are as follows:
With both choice, the secret’s to regulate the Could or June beetle by attacking the grub earlier than it turns into a severe situation. Attempt to finish the infestation earlier than the larvae flip into grownup beetles and lay much more eggs. Though grub worms are extra damaging, they’re simpler to regulate.
Following are some cultural therapy choices you may select from:
- Use neem oil: Neem oil is a pure pesticide produced from seeds of the neem tree. The first lively ingredient is called Azadirachtin, and it’s a typical selection for pesticide merchandise. Neem oil works effectively towards beetles as it may kill a lot of the adults. Observe utility directions discovered on product labels.
- Use beetle traps: Another choice is to make use of high-quality beetle traps. Nevertheless, beetle traps may also appeal to different species of beetles from exterior your backyard. This implies that you could be want to position a number of traps round your backyard to distract intruders and cease them from making their method inside.
Among the merchandise listed under are labeled to entice Japanese beetles, nonetheless they work on Could and June beetles as effectively.
If cultural strategies don’t appear to be working, chemical management could also be more practical, nonetheless this ought to be used as a final outcome. As beforehand said, the important thing to treating these beetles is to know its life cycle.
To deal with a at the moment current Could or June beetle drawback, it’s finest to make an insect management utility when the grubs are feeding close to the floor of the soil. If merchandise are utilized at every other instances, they might be ineffective and function a waste of money and time.
Grub worm feeding sometimes takes place within the spring beginning in mid or late April by June. In addition they happen within the fall round August by October.
Among the more practical merchandise comprise Chlorantraniliprole, Trichlorfon and Imidacloprid. Be cautious of buying merchandise labeled to deal with grub worms that reside for one 12 months as these merchandise could also be ineffective on the species that reside within the soil for a number of years. Dylox 6.2 is a good product to make use of on grubs as it’s going to kill grubs of their second or third instar on contact. Scotts GrubEx comprises Chlorantraniliprole, Dylox 6.2 comprises Trichlorfon and each Benefit 0.5 G and Benefit 2F comprise Imidacloprid. Click on on the merchandise under to study extra.
How do I forestall Could or June beetles?
The easiest way to regulate Could or June beetles is by killing them after they’re of their larval stage. With that being stated, an effective way to stop them is by additionally stopping grub worms.
Clemson College Entomologist, Dr. J.C. Chong says, “White grubs are rather more efficient to regulate through the use of preventative administration which means you need to apply an extended residual insecticide in June or when scarab beetles begin flying…in case you make one utility a 12 months, you don’t have to fret about it for the remainder of the 12 months.”
Merchandise containing Imidacloprid are best for prevention methods. Each Benefit 0.5G and Benefit 2F comprise Imidacloprid.
Could and June beetles are an enormous concern for many U.S. owners. The adults harm ornamentals whereas the larva damages turfgrass. Now that you’re extra knowledgeable concerning the Could and June beetle, you may start developing with efficient prevention and therapy methods very quickly.