Cockchafer and junic beetle recognize differences and profiles

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Cockchafer and junic beetle recognize differences and profiles: junic

They spend years in the ground, unnoticed by the gardener. Suddenly they come to the surface in masses. Quick, it is clear, these little animals are a plague. At breathtaking speed, they eat young trees bare, destroy flowers and do not stop at the grass. Cockchafer and junic beetles are close relatives with some similarities. But there are also differences.

The family of the leaf horn beetle

The Blatthorn beetle family is one of the largest insect families. More than 20,000 species of beetles belong to her. The beetles owe their name to the look of their fillers. These consist at the ends of many small leaflets that diverge like a fan. Among the best-known representatives of this family are the pretty cockchafer, which fly their trajectories in the month of May. The June beetles are also from the same family and are also native to Germany. Their flight starts, as their name suggests, a month later than the cockchafer. And as is typical of relatives, there is one or the other thing in common, but also differences.

Wanted poster: Cockchafer

  • lives mainly in deciduous forests
  • six legs, like all insects
  • two pairs of wings
  • thin, translucent skin wings serve as a propeller
  • reddish-brown, thick cover wings as wings
  • The underside and the pronotum are black
  • black and white zigzag pattern on the sides
  • 2.5 to 3 cm tall
  • Weight 0.4 to 0.9 g
  • Lifespan as a larva: 3-4 years
  • Life as a beetle: max. 2 months
  • feeds on roots and leaves
  • diurnal
  • Birds, hedgehogs, martens and wild boar are natural enemies
  • Melolontha is her scientific name
  • Includes three subspecies
  • Feldmaik√§fer and Waldmaik√§fer are native in this country

Cockchafer - Melolontha

Wanted poster: Junikäfer

  • Also called Ribbed Brownbird and Summer Beetle
  • Latin name is 'Amphimallon solstitiale'
  • 1.3 to 1.8 cm tall
  • Lifespan about 6 weeks
  • light brown chitin armor
  • Body is slightly hairy
  • feeds on leaves and flowers
  • twilight and nocturnal
  • during the day in hiding
  • lives in gardens, pastures and forests
  • flies in June nights
  • has bat, mole and shrew as enemies

Juniper Beetle - Ribbed Brown Beetle - Aphimallon solstitiale

Which beetle is the pest in the garden?

For most gardeners, the June beetle is the far greater plague in the garden because it spreads in droves starting in June. He eats leaves and flowers en masse until autumn. He also makes his way across the lawn. Cockchoppers eat bare trees in May, but recover in June and July and drive out again. In that sense, the Juniper beetle is at first sight the bigger pest. But before the beetle becomes a beetle, it remains in the stage of a larva for several years. These are called in the beetles Engerlinge. And the weevils of the cockchafer are in no way inferior to the predators of the Junikbeetle in their voraciousness. Therefore, if necessary, both species must be fought in the garden.
Note: The junic beetle feels good in high temperatures. A large number of Junikäfern is therefore to be expected in particularly hot summers.

Grubs, the larvae of the beetles

Cockchafer - Melolontha

If the beetles fly again in May and June, they will surely fall victim to some green leaves. But the damage that an "average" number of beetles can do is limited. In addition, healthy plants recover from the loss of leaves and drive out quickly. There is no need to combat these beetles as long as their numbers are not high. Chemicals are not recommended as a control anyway. Both beetles and their larvae are everywhere in the garden, this would have to be treated nationwide with chemistry. The result is soil contaminated for years, which damages the plants as well as the beetles and their larvae.

Natural predators of beetles and larvae

May and Junikäfer have natural predators. These are the best allies of the gardener in the fight against beetles and are also a completely natural means of control. If the two species of beetles do not show strong growth, these natural enemies are quite sufficient. Further measures to combat are then not required. Natural predators include:
  • Hedgehog
  • bats
  • Moles
  • cats
  • birds
  • shrews

Promote natural predators

Natural predators of beetles and grubs can be found in every garden. Targeted lures can help increase their numbers and attract more animals to the garden.These are crowned with success if the animals find optimal living conditions in the garden.
  • Offer nesting possibilities for birds
  • Hang boxes for bats
  • Attract cats with cat food and water pots
Tip: Especially in small gardens, it is necessary to specifically attract predators, as these are not likely to be found here.

Regularly occurring beetle pests

The development of the beetles takes place in perennial cycles. So in some years only a few beetles fly around, while in other years their numbers can be considerably higher. If the living conditions in the soil are optimal, many beetle larvae survive and thrive magnificently. If, after years, beetles develop from the larvae, beetle plagues often occur. The beetles then eat whole forest areas bare. However, healthy trees can recover from this infestation. The eggs they lay at this time, and the grubs that hatch from them, are the far greater danger to the trees. They feed on their roots. Root loss can be so great that weak and young trees do not survive this damage.

Protective measures for beetle pests

Juniper Beetle - Ribbed Brown Beetle - Aphimallon solstitiale

Again and again it can come to veritable beetle plagues. Decades may pass between the individual plagues, but if the plague is there, the damage is enormous. Natural predators can do little against this mass of beetles, other control measures do not bring the desired success. The garden is open and there are always beetles. Chemical control agents are harmful to humans and nature and therefore not recommended. In order to minimize the damage caused by the beetle infestation, the plants and the lawn must be protected immediately.
  • Cover plants
  • Keep soil dry for a long time
  • Plant plants carefully and close to roots
  • Cover lawns in the evening, as Junik√§fer are nocturnal
Tip: Since the beetles, especially the June beetles, are very small, you should use close-meshed nets or tarpaulins to cover them.
These measures will not destroy the beetles, but they will take their habitat. You can not fly under the nets and damage the plants. In addition, you are prevented from mating and egg laying, which keeps the number of beetles low in the following years.

Fighting beetles with nematodes

If the beetles occur in large numbers and their natural predators are no longer sufficient to combat them, you can also use them nematodes. Control is preventative by destroying the larvae before they can develop into beetles.
  • biological control agent
  • Roundworms, infest and kill grubs
  • use only if the infestation is great
  • limited shelf life, apply immediately
  • Powder acc. Use instructions for use
Tip: Nematode preparations are available in garden centers, hardware stores and numerous online shops.

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