eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-01-05 1 1 67 68 3382 article K. J. Shiny 1 Department of Zoology, Sacred Heart College, Thevara, Kerala (INDIA) Two dimensional chromatographic studies were conducted on the adults and nymph/ larval stages of insects belonging to three different orders. The results obtained indicates that the free amino acids present in the different stages of insects varies. Certain free amino acids are present in the adult but absent in nymph/larval stages and vice versa. https://www.biotech-asia.org/vol1no1/free-amino-acids-in-the-haemolymph-of-different-life-stages-of-three-orders-of-inseects/ Haemolymph; free amino acids; Periplanata; Polytes; Aeolopus