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Adelges laricis

Blade spruce gall adelgid

Description

A small gall aphid, its generation cycles are similar to the woolly adelgid. Overwintering in the larval stage at spruce buds, it matures and lays eggs in spring. The premature stages live on the larch needles, covered by white wax. The larvae later develop in galls formed of the disfigured buds on spruce. The ovalshaped galls then usually appear at the tip of the shoots, where the twigs may grow through them. Their size is  –1.5 cm. They have a bright yellow and later brownish red colour and create short stubs of disfigured needles. In summer the galls dry, the insects emerge and infest larches. The pest is less common than the woolly adelgid. All forest stands where larch is mixed with spruce are endangered.

Symptom

The oval-shaped galls then usually appear at the tip of the shoots. Their size is 1-1.5 cm, they have a bright yellow and later brownish red colour.

Tree Species: Spruce, Larch

Part of a plant- attacked: Branch

Pest significance: Harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 5 observations of the species in the system

Adelges laricis Blade spruce gall adelgid
Katarína Vlasáková
Number of votes: 0
Published: 19.5.2024

Adelges laricis Blade spruce gall adelgid
Katarína Vlasáková
Number of votes: 0
Published: 19.5.2024

Adelges laricis Blade spruce gall adelgid
Katarína Vlasáková
Number of votes: 0
Published: 19.5.2024

Adelges laricis Blade spruce gall adelgid
Slávka Chrachalová
Number of votes: 0
Published: 5.5.2024

Adelges laricis Blade spruce gall adelgid
Slávka Chrachalová
Number of votes: 0
Published: 5.5.2024