Adults are associated mostly with conifers of the Pinaceae family (larch, pine, spruce, fir, etc.), but S. ferruginea (an eastern sp.) prefers Betulaceae (alder, birch, hazel, etc.), and the western S. albida attacks various deciduous trees, incl. fruit trees(1)
S. albida larvae feed on tree roots, hibernate in soil, and pupate in spring(3)
Contributed by Mike Quinn on 24 June, 2007 - 7:07pm Additional contributions by cotinis, v belov Last updated 28 March, 2013 - 4:52pm
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