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The gall adelgid (Adelges cooleyi) is an adelgid species that produces galls in spruce trees. They infect the new buds of native spruce trees in the foothills of the Rocky Mountains in the spring. They also attack blue spruce to a lesser degree. The insects complete two generations within the year.
Bays Mountain Park, Sullivan County, Tennessee.With lacewing (Chrysopidae sp. egg) closeupAdelges tsugae, the hemlock woolly adelgid (/ ə ˈ d ɛ l. dʒ ɪ d / [1]) or HWA, is an insect of the order Hemiptera (true bugs) native to East Asia.
Some species such as Aphis fabae (black bean aphid), Metopolophium dirhodum (rose-grain aphid), Myzus persicae (peach-potato aphid), and Rhopalosiphum padi (bird cherry-oat aphid) are serious pests. They overwinter on primary hosts on trees or bushes; in summer, they migrate to their secondary host on a herbaceous plant, often a crop, then the ...
Milkweed aphids are typically much less damaging to monarchs than pest control treatments, including organic treatment protocols. Ways to Get Rid of Aphids on Milkweed
Several species of aphid have been described on cypresses and related trees in various parts of the world. In North America, these are Cinara canadensis on Juniperus virginiana, Cinara sabinae on Juniperus sabina, and Cinara cupressi on Cupressaceae species in North America. C. cupressi was also described from Cupressaceae in the United Kingdom.
The beech blight aphid (Grylloprociphilus imbricator) is a small insect in the order Hemiptera that feed primarily on the sap of American beech trees. The aphids form dense colonies on small branches and the undersides of leaves.
Cerataphis lataniae, commonly known as the palm aphid, is an aphid known to infest palm species as well as a variety of leafy plants. It is one the most common pests that causes damage to agriculture and human health.
Adelgids only lay eggs, and never give birth to live nymphs as aphids do. Adelgids are covered with dense woolly wax. A complete adelgid life cycle lasts two years. [6] Adelgid nymphs are known as sistentes, and the overwintering sistentes are called neosistens. [7] Rain can kill adelgids by dislodging eggs and sistentes from trees. [8]
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