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Europäische Pine Sawfly


Europäische Pine Sawfly

Europäische Pine Sawfly

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Kiefernsägeblätter sind Schädlinge von Kiefern. Sie werden oft mit Mottenlarven verwechselt, aber der Erwachsene dieser Insekten ist eher wie eine Fliege.

Die Insekten überwintern als Eier, die während einer zweiwöchigen Periode Anfang Mai schlüpfen. Die Insekten ernähren sich für 4 bis 6 Wochen. Die Insekten verpuppen sich in Streu unter dem Baum oder an geschützten Stellen am unteren Stamm. Die Erwachsenen kommen Anfang September bis in den späten Herbst. Nach der Paarung legen die Weibchen Eier in Kiefernnadeln.

Die Insekten fressen die alten Nadeln, lassen aber den neuen Trieb in Ruhe. Die Insekten ernähren sich in Kolonien und wenn sie gestört werden, werden sie auf und ab wippen.

Kontrollen umfassen Orthene.

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Europäische Pine Sawfly

FAQ - 💬

❓ What is the difference between a sawfly and a WASP?

👉 The primary distinction between sawflies and the Apocrita – the ants, bees, and wasps – is that the adults lack a "wasp waist", and instead have a broad connection between the abdomen and the thorax. Some sawflies are Batesian mimics of wasps and bees, and the ovipositor can be mistaken for a stinger.

❓ Can you spray for sawfly?

👉 Sawfly Control The natural insecticide spinosad will control sawfly larvae. Conventional insecticides such as malathion are also effective. Bt (Bacillus thuringiensis), which is an effective natural control for true caterpillars, is ineffective on sawfly larvae.

❓ Are sawflies harmful?

👉 How serious are sawflies? These pests aren't an issue indoors, and unlike other wasps, females do not sting. However, infestations can affect outdoor trees. While they are usually benign, some species with large populations produce serious economic damage to large forests and cultivated plant acreages.

❓ Are sawflies beneficial?

👉 Just a few sawfly larvae on a large or mature plant may do little damage and can be tolerated. Also, when larvae are one-half full grown or larger they will do little more feeding. Leaving the larvae for the birds could be a good solution and beneficial.

❓ How do I get rid of pine sawfly?

👉 Remove larvae by pruning out a colony found on a branch using a strong jet of water to blast the larvae off of the plant, or by using an insecticide such as cyfluthrin, permethrin, insecticidal soap and spinosad. When using a pesticide, it is best to spot-treat areas of infestation since they are often localized.

❓ What product kills sawfly?

👉 Examples of contact residual pesticides that are effective include permethrin, bifenthrin, lambda cyhalothrin, and carbaryl are most effective against young sawfly larvae.

❓ Do pine sawflies bite?

👉 The term sawfly comes from the saw-like ovipositor (egg laying apparatus) the female uses to cut a slit into leaf tissue where the eggs will be deposited. They are harmless to humans and pets, though, because they do not sting. Females usually select needles grown that year located near the end of a lateral branch.

❓ Do sawflies bite humans?

👉 Do sawflies sting or bite? Sawflies do not sting and do not bite people. Females can have a large ovipositor that can resemble a large stinger but is actually only used for depositing eggs. It is used to drill into host plants in order to lay eggs inside.

❓ Do sawflies damage trees?

👉 Some attack young trees. Larvae can strip all old needles from trees. New foliage is not preferred. Mortality and top kill can occur on some hosts after consecutive years of defoliation. Pinyon sawfly causes most serious damage in small trees although trees of all sizes are defoliated.

❓ How do you stop sawflies?

👉 Management: Look for sawfly larvae in the spring and if necessary use a pesticide to treat them. Spot treat when possible as European pine sawflies commonly feed in groups. In the fall, apply imidacloprid or dinotefuron to the soil to control larvae for the following spring.

❓ How do you keep sawflies away?

👉 Sawfly Control Cultivate around trees and shrubs in the early spring and again in the fall to help reduce the overwintering population. Wash slugs off leaves with a strong jet of water from the Bug Blaster; larvae may also be sprayed with Safer® Soap. Apply food-grade Diatomaceous Earth for long-lasting protection.

❓ What is a European pine sawfly?

👉 The European Pine Sawfly (Neodiprion sertifer) is an invasive species of sawfly known for attacking and damaging pines that they infest and lay eggs on. The European Pine sawflies are a preventable nuisance with several ways to recognize and eliminate them.

❓ How do you get rid of European pine sawflies?

👉 In winter and early spring, inspect trees for European pine sawfly eggs deposited in the needles. Tag trees to monitor for larvae. Remove trees that are larger than market-able size so they don't serve as reservoirs for sawflies. Encourage natural predators. Scout for young larvae feeding on needles beginning in May.

❓ What kind of damage does European pine sawfly do to trees?

👉 Feeding damage from European pine sawfly. Courtesy of Sandy Gardosik, PDA European and redheaded pine sawflies: Scotch, red, Mugo, Jack, and Austrian pines Complete defoliation or sparse, patchy, missing foliage anywhere on the tree

❓ What do pine sawflies do in the winter?

👉 European pine sawflies overwinter as yellow eggs deposited in the needles (Figure 4). The eggs hatch in April through mid-May. Larvae feed as a colony (10–100 larvae) and eat previous year's growth through July (Figure 5). Three to four larvae may be seen feeding on a single needle.


Autor Des Artikels: Alexander Schulz. Unabhängiger Konstrukteur und technischer Experte. Arbeitserfahrung in der Baubranche seit 1980. Fachkompetenz in den Richtungen: Bau, Architektur, Design, Hausbau.

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