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Green spruce aphid (Elatobium abietinum) is an important defoliating pest of spruce trees (trees in the Picea genus), especially Sitka spruce (Picea sitchensis), which is widely grown in the...
Cinara pruinosa occurs in small colonies on the woody twigs of Spruce (Picea species) in spring, but later found at base of trunk and on roots in ant shelters. Oviparae and alate males occur in September-October, but anholocyclic overwintering on roots also occurs.
Cinara aphids are sap-feeding insects that primarily infest coniferous trees, such as pine and spruce, posing risks to their health and growth. Cinara aphids are a genus of aphids that belong to the family Aphididae.
Cinara pilicornis, the spruce shoot aphid or brown spruce shoot aphid, is an aphid species in the genus Cinara found on Norway spruce (Picea abies) and Sitka spruce (Picea sitchensis). It is a quite large aphid species with a plump, dull brown body.
Cinara aphids on spruce & pine may be wax-off - or wax-on! Spruce trees have several different species of Cinara aphids. The species we tend to find earliest in the year is the wax-bordered spruce aphid, Cinara pruinosa .
Cinara obscura is monoecious on spruce (Picea), specifically white spruce (Picea glauca) and Engelmann's spruce (Picea engelmannii). Bradley (1953) first described the species after finding them in colonies on the bark of the lower stems of small white spruce growing close together in seed-beds.
20 sty 2009 · We studied whether the mutualism between wood ants and Cinara aphids affects the growth of boreal Norway spruces ( Picea abies L. Karst.) in stands of different ages.
