CABBAGE POWDERED-WING (Aleyrodes brassicoe). A small four-winged powdery fly, closely allied to the Aphides. As implied by its name, this pest infests the various sorts of Cabbages. It is more particularly prevalent in autumn. Its presence may be readily detected by the partial discoloration of the leaves attacked. The head and body between the wings are black, with yellow variegation; abdomen yellow or rosy; wings white and mealy (whence its common name), the upper pair each having a darker spot, near the centre. Its destructive power resides in the rostrum, or sucking-tube, with which its head is furnished. Remedies. The only effectual means of exterminating this pest is to destroy the leaves, preferably by burning. If its presence is detected early, an application of tobacco water, or diluted soft soap, may prove beneficial.