Dysaphis plantaginea Passerini Rosy apple aphid

This aphid (commonly known as 'blue bug') is a serious pest of apple, causing severe curling and distortion of leaves; affected tissue (pseudo-galls) may also become yellowish or brown but not red (cf. Dysaphis devecta, above). Infested shoots also become distorted and stunted and fruits remain small and malformed. Heavy infestations also lead to premature leaf-fall and will reduce cropping potential for the following year.


Eggs, overwintering on the bark, hatch in the early spring. Colonies then develop on the rosette leaves and, later, on the young shoots. Winged forms are produced in June or July, when there is a migration to Plantago, especially P. lanceolata. Colonies, however, often also persist on apple well into the summer. In early autumn a return migration occurs from summer hosts to apple, where winter eggs will be laid.


Aptera 2.1-2.6 mm long, pinkish to dark bluish-grey, coated with white, mealy wax; siphunculi black, elongate, tapered, flanged apically; cauda dark, triangular (Fig. 191d).

Was this article helpful?

0 0
Building Your Own Greenhouse

Building Your Own Greenhouse

You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!

Get My Free Ebook

Post a comment