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Diaphorina citri, the Asian citrus psyllid, is a sap-sucking, hemipteran bug now in the taxonomic family Liviidae. [1] It is one of two confirmed vectors of citrus greening disease . [ 2 ] [ 3 ] It has a wide distribution in southern Asia and has spread to other citrus growing regions.
Olla v-nigrum usually prey on immature psyllids, such as psyllid larvae. Olla v-nigrum has been observed in nature to specifically prey upon the Asian citrus psyllid (Diaphorina citri) as well as various aphids such as the Schizaphis graminum, Hyadaphis sp., Metopolophium dirhodum, Uroleucon sp., Breviocryne brassicaee L. and Myzus sp. [10]
Psyllid pest of Eucalyptus camaldulensis. Citrus greening, also known as huanglongbing, associated with the presence of a bacterium Liberibacter asiaticum, is an example of a plant pathogen that has coevolved with its insect vector, the "Asian citrus psyllid", ACP, Diaphorina citri, such that the pathogen causes little or no harm to the insect, but causes a major disease which can reduce ...
Although aphids cannot fly for most of their life cycle, they can escape predators and accidental ingestion by herbivores by dropping off the plant onto the ground. [103] Others species use the soil as a permanent protection, feeding on the vascular systems of roots and remaining underground all their lives.
Significant pests include the cottony cushion scale, a pest of citrus fruit trees, [81] the green peach aphid and other aphids which attack crops worldwide and transmit diseases, [82] and jumping plant lice which can be plant-specific and transmit diseases, as with the Asian citrus psyllid which transmits citrus greening disease. [83]
Thus, aphids show very complex and rapidly changing within-year dynamics, with each clone going through several generations during the vegetative season and being made up of many individuals, which can be widely scattered in space. The survival of the eggs and/or overwintering aphids determines the numbers of aphids present the following spring ...
Aphidius wasps are endoparasitoids of aphids. The female wasp lays eggs in an aphid. When the eggs hatch, the wasp larvae feed on the inside of the aphid. As the larvae mature, the hosts die and become slightly enlarged or mummified, often becoming tan or yellow. Complete metamorphosis occurs within the host.
Pemphigus spyrothecae is in the superfamily Aphidoidea, in the hymopterous division of the order Hemiptera, which consists of insects with sucking parts of the mouth. P. spyrothecae is a member of the suborder Sternorrhyncha, which includes scale insects, psyllids, whiteflies, aphids.