Adelges (Adelges) tardus (Dreyfus, 1888)

Figs 10–14

Diagnosis

Overwintering pseudofundatrix nymphs 0.3–0.4 mm, blackish with sparse, glossy grey, stiff, almost straight wax filaments. Al. gallicolae: 1–2 mm; ant. III longer than IV; glands (including premarginal) developed, blackish with reddish brown abdomen exuding abundant fine wax wool. They remain in the vicinity or their gall, laying eggs covered with abundant wax. Galls as in A. laricis, but gregarious, along with galls from preceding years, opening in August–September. Gall chambers not completely closed: nymphs can frequently be seen on the outer surface. Gallicolae blackish, secreting abundant wax. Anholocyclic on Picea . Usually on trees in rather open position: clearings, forest margins, solitary spruces and spruce hedges. Galls frequently intermixed with galls of Adelges abietis . Overwintering pseudofundatrices seem to prefer the surface of buds, not their bases as in A. abietis (according to my own records from Finland).

Recorded hosts

Pinaceae: Picea abies *, glauca, pungens, sitchensis .

Distribution

D F S.

A10 (A9) Overwintering larvae: Dorsal sclerites with groups of similar-sized ring-like wax pores. Al. gallicola with basal articulation of ant. IV and V narrower ................................................. ..................................... Adelges ( Gilletteella Börner, 1930 and Sacciphantes Curtis, 1844)