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Gall adelgid. 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.
Aphididae. The Aphididae are a very large insect family in the aphid superfamily ( Aphidoidea ), of the order Hemiptera. These insects suck the sap from plant leaves. Several thousand species are placed in this family, many of which are considered plant/crop pests. They are the family of insects containing most plant virus vectors (around 200 ...
Honeydew (secretion) An aphid produces honeydew for an ant in an example of mutualistic symbiosis. Honeydew is a sugar -rich sticky liquid, secreted by aphids, some scale insects, and many other true bugs and some other insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out ...
Woolly aphids (subfamily: Eriosomatinae) are sap -sucking insects that produce a filamentous waxy white covering which resembles cotton or wool. The adults are winged and move to new locations where they lay egg masses. The nymphs often form large cottony masses on twigs, for protection from predators. Woolly aphids occur throughout the ...
Acyrthosiphon pisum, commonly known as the pea aphid (and colloquially known as the green dolphin, [1] [2] pea louse, and clover louse [3] ), is a sap-sucking insect in the family Aphididae. It feeds on several species of legumes (plant family Fabaceae) worldwide, including forage crops, such as pea, clover, alfalfa, and broad bean, [4] and ...
Aphis spiraecola is a species of aphid described in 1914 by Edith Marion Patch. [1] Its common names include green citrus aphid, [2] Spirea aphid, [3] and apple aphid. [4] It is distributed worldwide, and is most abundant in the United States. [5] It has a diploid chromosome number of 2n=8.
List of pests and diseases of roses. Rose aphid ( Macrosiphum rosae) feeding on buds and shoots. Rose rust ( Phragmidium) Two-spotted mite ( Tetranychus urticae) on Gardenia. Yellow tea thrips ( Scirtothrips dorsalis) Bristly roseslug ( Cladius difformis) on the underside of a leaf. Cottony cushion scale ( Icerya purchasi) Leaf damage caused by ...
Myzus persicae. ( Sulzer, 1776) [1] Green peach aphid that has been killed by the fungus Pandora neoaphidis Scale bar = 0.3 mm. Myzus persicae, known as the green peach aphid, greenfly, or the peach-potato aphid, [2] is a small green aphid belonging to the order Hemiptera. It is the most significant aphid pest of peach trees, causing decreased ...