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In Prosopis cineraria trees, four types of galls, showing variability in structure, size and weight, were identified. 25 to 45.4% galls showed the presence of gall makers (insects/mites). Population of these gall makers increased with vegetative growth of trees. Infested galls were maintained in laboratory cages and the emerged adults were identified as a mite, Eriophyes prosopidis (Acarina) and six insects, Contarinia prosopidis (Diptera), Pediobopsis sp. (Hymenoptera) and four Lepidopterans, Assura albicostalis, Anarsia triaenota, Eucosma lioplintha and Ascalenia sp.