Blackfly (Black Bean Aphid)

Dense colonies of black bean aphid often referred to a blackfly can be found on some vegetables and other plants during spring and summer. There are many other species of aphid that are black. 

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Blackfly on broad bean

Quick facts

Common name Black bean aphid
Scientific name Aphis fabae species group
Plants affected A very wide range including broad, French and runner beans, nasturtium, dahlia, philadelphus, viburnum and euonymus
Main cause A black sap-sucking insect
Timing April-August

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