Ph.D Open Defence and Viva Voce of Ms. Ranjini S., Research Scholar, Research and Postgraduate Department of Zoology, St. Thomas’ College (Autonomous), Thrissur, under the guidance of Dr Francy Kakkassery and the co-guidance of Dr. Joyce Jose, is held on Saturday, 20th May 2023, at 10.30 am at Centenary Conference Hall, St. Thomas’ College (Autonomous), Thrissur. The title of the Thesis is, “Studies on the taxonomy of aquatic heteropteran bugs (Order: Hemiptera) from selected habitats of Kerala and their efficacy as biocontrol agents on mosquito larvae of Culex quinquefasciatus Say” Prof. (Dr.) N. Munuswamy, Honorary Emeritus Professor, Department of Zoology, University of Madras, Guindy Campus, Chennai – 600 025, India was the Chairman of the open defense. Congratulations to Dr Ranjini S, Dr Francy K Kakkassery & Dr Joyce Jose👍👍👏👏