Strongylogaster multifasciata
Sawfly Strongylogaster multifasciata
The feeding gallery in the bark of older pines is excavated by a small hymenoptera larva. The larva is about 11-18 mm long. At first, it feeds on fern leaves Dryopteris filix-mas and Pteridium aquilinum, later on pine bark creating a typical feeding gallery which never reaches the living part of phloem or wood. The species is common in some parts of Europe, mainly in warmer pine woods with fern in undergrowth.
The feeding trace in wood.
Tree Species: Pine
Part of a plant- attacked: Tree trunk
Pest significance: Not harmful
Pest Category: Insects
Invasive Species: No
Present in EU: Yes
Pest group: Insect
Affected part of wood: Bark
Depth of damages: Bark
The extent of damage: Lokally
Prevalence in Europe: Very rare
Damaged products: Firewood
Roundwood size: Diameter 50+, Diameter from 10 up to 50 cm
Wood discoloration: No
Exit holes: Round
Pest subcategory: Bark and underbark insect
Similar pests
Pityogenes bidentatus
Tomicus piniperda
