Aphis idaei van der Goot Small raspberry aphid

This aphid causes leaf curl on loganberry and raspberry, but is of greater importance as a vector of raspberry vein chlorosis virus. Eggs, which overwinter on the canes, hatch in March. Dense colonies then develop on the shoots, buds and flower trusses; such colonies are usually ant-attended. The apterous females within these colonies are 1.5-2.0 mm long and pale green to yellowish-green, with moderately long, outwardly curved siphunculi. Winged forms are reared during the summer and these disperse to the new canes, eventually giving rise to small, pale yellow apterae which develop singly on the underside of expanded leaves. Wingless sexual forms are produced in the autumn.

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