Insecta, Homoptera, Aphididae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- A polyphagous species.
- In America, whence the species probably originates, the primary hosts are Spiraea; with Citrus constituting the secondary hosts. In southern Europe (and in North Africa), this aphid is anholocyclic.
- In contrast with other citrus fruit aphids, the green citrus aphid is active from spring until autumn, without a summer diapause. It is thus present at each period of vegetation, in the spring and autumn. It overwinters on shoots as parthenogenetic females.
- The cycle is continuous in southern Italy, where more than 40 generations a year are reported.
- Damage (*) is severe because the green citrus aphid colonizes young shoots, buds, grafts and young plants, the development of which is inhibited. spring-time attacks are the most deleterious.
Foliage is severely distorted (*) . During flowering, an attack causes the flowers to drop off.
In addition to direct damage and the honeydew produced, which favours the development of sooty moulds, this pest constitutes a dangerous potential vector of Tristeza citrus fruit virus.
Control measures should be started as soon as 10 to 20 % of buds are infested.
In the United States, in Florida and in California, the green citrus aphid is the species which causes the most damage to citrus fruits.
DE: Grüne Zitrusblattlaus ES: Pulgón verde de los agrios FR: Puceron vert des citrus, Puceron des spirées IT: Afide verde degli agrumi PT: Piolho verde da laranjeira GB: Green citrus aphid, Spiraea aphid
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