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greater black spruce bark aphid (Cinara piceae) Identification, biology, distribution, host plants, natural enemies, damage caused. Creative commons images.
- Cinara pruinosa|Read More
Cinara pruinosa occurs in small colonies on the woody twigs...
- Cinara pruinosa|Read More
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. It seems to have little effect on the tree.
The Cinara pruinosa alate (see third picture above) is brown or green with a pattern of white wax spots down the midline and along the sides of the dorsum. Cinara pruinosa oviparae are somewhat smaller than the viviparae and have a pericaudal wax ring (see picture below in life cycle section).
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.
23 sie 2022 · Though the symptoms sound ugly, aphids actually don’t do much damage to healthy, mature trees. But, if you want to do away with the creepy critters, or save your property from sticky honeydew, here’s what to do.
Giant Conifer Aphids. Scientific Name: Cinara spp. Hosts: Conifers. Damage/symptoms: In large groups, the aphids can often blend in with the bark. Aphids feed on the sap from woody areas of the tree. Heavy infestations can cause needle drop, yellowing, curling of the needles, and dieback. The aphids also produce copious amounts of honeydew.
