Cydia pactolana (Zeller, 1840)
scarce spruce piercer
on Picea
gall
the larva bores in the bark, generally just below a whorl of side branches; mostly on quite young saplings. The bark swells, ejected frass is mixed with extruded resin.
host plants
Pinaceae, oligophagous
Picea abies, pungens, sitchensis.
Several sources mention the species also from Larix but that probably refers to Cydia grunertiana.
larva
See pictures on Lepiforum, also Swatschek.
pupa
See Patočka & Turčáni.
synonyms
Grapholitha, Laspeyresia, pactolana.
references
Bradley, Tremewan & Smith (1979a), Buhr (1965a), Disqué (1905a), Gielis Huisman, Kuchlein ao (1985a), Hancock & Bland (2015b), Lepiforum (2019), Meijerman & Ulenberg (2000a), Patočka & Turčáni (2005a), Schütze (1931a), Swatschek (1958a), Szőcs (1977a), Thomann (1956a).