''Nasonovia ribisnigri'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

aphid Aphids are small sap-sucking insects and members of the superfamily Aphidoidea. Common names include greenfly and blackfly, although individuals within a species can vary widely in color. The group includes the fluffy white woolly aphids. A t ...

. Their primary hosts are currant plants, including blackcurrants (''Ribes nigrum'') and

gooseberries Gooseberry ( or (American and northern British) or (southern British)) is a common name for many species of ''Ribes'' (which also includes currants), as well as a large number of plants of similar appearance. The berries of those in the genu ...

(''Ribes uva-crispa''), while the secondary hosts are a wider range of plants, including members of the

Compositae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

(''

Hieracium ''Hieracium'' (), known by the common name hawkweed and classically as (from ancient Greek ιεράξ, 'hawk'), is a genus of flowering plant in the family Asteraceae, and closely related to dandelion (''Taraxacum''), chicory (''Cichorium''), ...

'', ''

Lapsana ''Lapsana '' is a genus of flowering plants in the family Asteraceae. It is native to Europe and northern Asia. Nipplewort is a common name for plants in this genus. Species Plant list * '' Lapsana chondrilloides'' L. * ''Lapsana communis '' ...

'', ''

Crepis ''Crepis'', commonly known in some parts of the world as hawksbeard or hawk's-beard (but not to be confused with the related genus ''Hieracium'' with a similar common name), is a genus of annual and perennial flowering plants of the family Aster ...

'', ''

Leontodon ''Leontodon'' is a genus of plants in the tribe Cichorieae within the family Asteraceae, commonly known as hawkbits. Their English name derives from the mediaeval belief that hawks ate the plant to improve their eyesight. Although originally ...

'', ''

Lactuca ''Lactuca'', commonly known as lettuce, is a genus of flowering plants in the family Asteraceae. The genus includes at least 50 species, distributed worldwide, but mainly in temperate Eurasia. Its best-known representative is the garden lettuce ...

'' and '' Cichorium''),

Lamiales The order Lamiales (also known as the mint order) are an order in the asterid group of dicotyledonous flowering plants. It includes about 23,810 species, 1,059 genera, and is divided into about 25 families. These families include Acanthaceae, Big ...

('' Veronica'' and ''

Euphrasia ''Euphrasia'', or eyebright, is a genus of about 450 species of herbaceous flowering plants in the family Orobanchaceae (formerly included in the Scrophulariaceae), with a cosmopolitan distribution. They are semi-parasitic on grasses and other ...

'') and Solanaceae ('' Nicotiana'' and ''

Petunia ''Petunia'' is genus of 20 species of flowering plants of South American origin. The popular flower of the same name derived its epithet from the French, which took the word ''petun'', meaning "tobacco," from a Tupi–Guarani language. A tende ...

''). They are an important agricultural pest in

lettuce Lettuce (''Lactuca sativa'') is an annual plant of the family Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, ...

and

endive Endive () is a leaf vegetable belonging to the genus '' Cichorium'', which includes several similar bitter-leafed vegetables. Species include '' Cichorium endivia'' (also called endive), '' Cichorium pumilum'' (also called wild endive), and ''Ci ...

cultivation. Males grow to a length of , while

viviparous Among animals, viviparity is development of the embryo inside the body of the parent. This is opposed to oviparity which is a reproductive mode in which females lay developing eggs that complete their development and hatch externally from the ...

females are long, but oviparous female only reach .

References

Macrosiphini Insects described in 1841 Hemiptera of Europe {{Aphididae-stub