Biological observations and control of Apsylla cistellata Buckton (Psyllidae: Homoptera).
Singh G., Kumar A., Everett T. R.
Author Affiliation: Entomology Department, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttar Pradesh, India.
Indian Journal of Entomology 37 : 46-50
Abstract : Studies in Uttar Pradesh, India, in 1972-74 showed that Apsylla cistellata (Buckt.) starts feeding in the embryonic stage, without proper hatching of the egg, at oviposition sites inside the leaf midrib of mango. This feeding by the embryonic first-instar nymphs results in the formation of cone-shaped galls in leaf axils. Gall formation is completed before their invasion by second-instar nymphs. Injecting monocrotophos or dimethoate once into infested trees, or applying 3 sprays of either of the 2 compounds at 20-day intervals after the feeding of first-instar nymphs in the midrib, controlled the psyllid and gall formation. A rough estimate of the economics of control measures is presented.