Field investigations were carried out during 2011- 2012 to study the seasonal incidence of sucking pests in Bt and Desi cotton genotypes at the Agricultural Research Station, Dharwad. The highest incidence of thrips, leafhoppers and whiteflies was recorded on MRC 7918 BG-II (17.3, 5.7 and 0.31/ 3 leaves  espectively) followed by MRC 6918 non-Bt, RCH-2 BG-II and RCH-2 non Bt. The lowest incidence was noticed on DDhC-11. In contrast to above pests the highest incidence of aphids was recorded on DDhC-11 (23.4/ 3 leaves) followed by 20.9 on MRC-7918BG-II.The lowest of 17.8 aphids / 3 leaves was recorded on RCH-2 Non-Bt. The highest seasonal mean of predatory coccinellids recorded was 2.6/plant on RCH-2 non Bt followed by RCH-2 Bt (1.6/plant). In MRC-7918, MRC-6918 non-Bt and DDhC-11, the mean seasonal abundance was 1.5/pl. The highest seasonal abundance of spider was on MRC-7918 BG-II (1.1/plant) followed by MRC 6918 Non- Bt, RCH-2 BG-II, RCH-2 non-Bt and DDhC-11 with 0.9/plant. The highest Chrysoperla zastrowi sillemi population was noticed in MRC-7918 (0.7/plant) followed by MRC-6918 non-Bt (0.6/plant), RCH-2Bt, RCH-2 non-Bt with 0.5/plant and lowest on DDhC-11 (0.3/plant).The Bt cry toxins either as single gene or as stacked format could not influence the sucking pest incidence and their predators.