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Aleurolobus olivinus Silvestri
Insecta, Homoptera, Aleyrodidae .

Olive whitefly

Description, Biology, Life Cycle, Damage, Common Names, Images


[R]Description
- Adult: appearance of a typical whitefly. Similar to a minute fragile moth, entirely white; about 1.7 mm long. Transparent wings with numerous veins, covered with a white powder. Body: cream-coloured, and also powdered with white wax.
- Egg: elliptical but assymetrical, slightly reticulate and possessing a pedicel at one end which attaches it to the plant. About 0.2 mm long, greyish-yellow in colour.
- Nymph: body almost circular, entirely fringed with fine setae, flattened against the surface of the leaf like a scale insect, black in colour. The centre of the nymph becomes lighter in colour as it develops.
The pupa is black and resembles a flat pellet stuck to the leaf.

[R]Biology
- Host plants: olive, filaria (Phillyrea).
- Adults: the female lays 50 to 60 eggs on the upper surface of foliage, usually one per leaf, but sometimes in clusters of 5 to 9.
- Eggs: embryonic development of the egg takes about fifteen days.
- Nymph: the young nymph moves until it finds a suitable site, where it settles until moulting into an adult, having undergone 3 other moults. Development takes a year and the adult appears at the beginning of the following spring.

[R]Life Cycle
- This species has only one generation per year.
- Adults are active in June and July.

[R]Damage
Larvae cause the damage to plants. Their honeydew may be colonized by sooty moulds.
Natural enemies usually suffice to keep populations of this whitefly at a very low level.


[R]Common Names
DE: Schwarze Ölbaummottenlaus ES: Aleiródido del olivo FR: Aleurode noir de l'olivier IT: Aleirode nero dell'olivo PT: Aleurode da oliveira GB: Olive whitefly

[R] Images

  1. Aleurolobus olivinus Silvestri (Da Silvestri)
    Egg and larvae On the left: first instar larva (ventral view); on the right: fourth instar larva (ventral view).
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  2. Aleurolobus olivinus Silvestri (Da Silvestri)
    Colony on an olive leaf: 4th instar larvae

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