Rhopalosiphum rufiabdominale

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Rhopalosiphum rufiabdominalis (click on image to enlarge it)
Author(s): Whitney Cranshaw, and Suzanne Wainwright-Evans
Source: Journal of Integrated Pest Management (2020), 11 (1 - pmaa008)

Rhopalosiphum rufiabdominalis (Sasaki, 1899) - (rice root aphid)

This aphid is widely distributed and polyphagus. It infests upland rice and various other hosts. On upland rice, yield losses may reach and exceed 50%. In Asia and parts of Europe, the aphid lives on Prunus species, the primary host, during autumn and winter. It changes to rice, other cereals, grasses or other plants in the spring and summer. However, in some regions it may not change hosts (anholocyclic) and in North America, it has never been recorded from Prunus.

On Prunus, the aphid colonises the leaves, but on rice and other hosts the roots. On the roots, the aptera are 2-3 mm long and dark green to brownish with the end of the abdomen being reddish brown. The winged form is in general darker and predominantly reddish-brown or greenish-brown.

Vernacular names
• Deutsch: Reizwurzellaus
• English: rice root aphid
• Français: puceron rouge du riz
• Português: pulgão-da-raiz-do-trigo

Rhopalosiphum rufiabdominalis
Rhopalosiphum subterraneum