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Pemphigus betae, also known as the sugarbeet root aphid, is a species of gall-forming aphid that forms galls specifically on the commonly found narrowleaf cottonwood (aka the willow-leaved poplar tree), Populus angustifolia. Sugarbeet root aphids have been found in North America and Europe. [2]
Like aphids, phylloxera feed on the roots, leaves, and shoots of grape plants, but unlike aphids, ... Winged aphids are weak fliers, lose their wings after a few days ...
Rhopalosiphum rufiabdominale, the rice root aphid or red rice root aphid, is a sap-sucking insect pest with a wide host range and a global distribution. [2] As a member of the superfamily Aphidoidea, it is one of 16 species of the genus Rhopalosiphum. [3] Adults and nymphs are soft-bodied and usually dark green with brown, red, or yellow tones. [4]
Hyadaphis winged and wingless adults When wings are present they occur only on particular morphs called " alates ", and wingless morphs are said to be " apterous ". The forewing ( mesothoracic wing) of the alate in the Aphididae has four to six veins attached to a major vein-like structure that has been interpreted as the combined stems of all ...
In late summer some winged females develop which fly off and colonise the roots of grasses. Some of these aphids are carried into their nests by ants, where they overwinter, emerging in the spring to recolonise the roots of their secondary hosts, the whole cycle taking two years.
In winter, winged parthenogenetic females and larvae survive on wild-growing monocots, from which they move to agricultural fields in the spring. Fields populate gradually, starting from the edges to the center. Reproduction is rapid, with up to twelve generations per year. The aphid population reaches a maximum late in the summer.
Pemphigus spyrothecae is in the superfamily Aphidoidea, in the hymopterous division of the order Hemiptera, which consists of insects with sucking parts of the mouth. P. spyrothecae is a member of the suborder Sternorrhyncha, which includes scale insects, psyllids, whiteflies, aphids.
By winged aphids migrating into crops from elsewhere. These then reproduce and the offspring spread to neighbouring plants. One aphid species in particular, Rhopalosiphum rufiabdominale , known as the rice root aphid, is commonly known to vector the virus to a range of cereal crops.
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