Gossyparia spuria

European elm scale

Description

European elm scale live on branches and trunks of elm trees. It is an insect, that belongs to the Hemiptera: Eriococcidae. It is a native European species, which is quite widespread in forest stands and also parks and ornamental gardens. Females, about 2 mm in size, lay eggs on tree trunks, from which small, difficult-to-see larvae hatch during the summer. Brown colour scale is surrounded by a very distinct white waxy fringe around its body. Around 1885, This species has been introduced from Europe to the USA, where it spreads very quickly, and it is considered as an important pest of elm trees.

Symptom

It is relatively easy to recognizable species. Brown colour scale surrounded by a very distinct white waxy fringe around its body are sitting on the tree trunks and branches.

Tree Species: Elm, Ash, Alder, Hazel, Currant

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence