NATIVE RANGE: East Asia
FIRST FINDING IN SLOVENIA: not yet found in Slovenia
PATHWAYS: transport of saplings and wood packaging material
POSSIBLE TO FIND: yearround
FLIGHT SEASON OF ADULTS: May-June
DESCRIPTION: The Emerald ash borer is a shiny, emerald green buprestid beetle, 8–14 mm long. The larvae are creamy yellow and up to 26-32 mm long. The pronotum is broader than the rest of the body. The larvae construct zigzag-shaped galleries beneath tree bark, 20–30 mm long. The creamy white pupa may be found deeper, in the cambium layer. The characteristic “D”-shaped exit holes have a diameter of 3–4 mm.
HABITAT: Host plants are ash species (Fraxinus spp.). This species can be found both in forests and in urban settings.
STATUS: Found in the surroundings of Moscow (Russia) and currently spreading westwards.
SIMILAR SPECIES: The emerald ash borer is very similar to native European species of the genus Agrilus, especially the oak splendour beetle (A. biguttatus) and the metallic wood-boring beetle (A. ater). Similar deaths of ash trees are also caused by the fungus ash dieback (Hymenoscyphus fraxineus) and by various “honey fungi” (Armillaria spp).