Pest · Hymenoptera

Amauronematus

Amauronematus

Description

Taxonomic position: The genus Amauronematus belongs to the order Hymenoptera and the family Tenthredinidae (common sawflies). These insects are recognized as significant pests in forestry and ornamental gardening due to the feeding habits of their larvae.

Host plants: The primary hosts for Amauronematus species are members of the Salicaceae family, specifically willows (Salix spp.) and poplars (Populus spp.). They are frequently found in riparian habitats and plantation forests where these trees are prevalent.

Biology and life cycle: These sawflies undergo complete metamorphosis. Females use their ovipositor to insert eggs into the leaf tissue. Once hatched, the larvae, often referred to as false caterpillars, begin feeding voraciously. Depending on the species, pupation typically occurs in the soil or within the leaf litter, where the insect remains throughout the dormant winter period.

Damage and harmfulness: Larval feeding is the primary cause of damage. They consume large portions of the leaf blades, often resulting in complete defoliation of the host plant. This heavy loss of foliage significantly reduces the plant's ability to produce energy through photosynthesis, leading to reduced growth, branch dieback, and increased susceptibility to secondary infections.

  • Application of selective insecticides during the early larval development stage.
  • Preservation of natural predator habitats to encourage biological control.
  • Removal and disposal of infested foliage and ground litter during autumn.
  • Monitoring of foliage to detect early-stage damage and prevent outbreaks.
  • Use of mechanical controls, such as spraying trees with a strong jet of water to dislodge larvae.

Biology

Taxonomy

Latin name
Amauronematus
Order
Hymenoptera
Family
Tenthredinidae

Taxonomy and Latin: EPPO Global Database · code AMNTSP

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