Currant Lettuce Aphid
Nasonovia ribisnigri (Mosley)

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Hosts:
Primary hosts are Ribes spp with a range of secondary hosts, including lettuce. It is one of the few aphids that live deep in the leaves towards the heart of the lettuce plant rather than only on the outer leaves.

Distribution:
Europe, Asia, North & South America, New Zealand
The species was discovered in Tasmania in 2004 and spread to southern Victoria in 2005. Monitoring of this species in other parts of Australia is the principal reason for the development of this key.

Identification:
Specimens of this species can be identified using the characters provided in the key. 
Wingless adult females (apterae) have dark transverse bands on the outer parts of each abdominal segment.
Alatae have the siphunculi dark throughout and this differentiates the species from other similar aphids included in this key.

Further information: is available on the PaDIL website.

[image: courtesy of Lionel Hill, DPIWE, Tasmania]


 
 
 


Document 7829, submitted 04 November 2008
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