Unprecedented report of the calanoid copepod Acartiella faoensis Khalaf, 1991 from the estuarine waters of the lower-middle stretch of river Hooghly, West Bengal, India

Acartiella faoensis, previously known as Acartia (Acartiella) is a calanoid copepod which was observed during biodiversity survey, July-August of 2018, on the lower-middle stretch Hooghly River (upper reaches estuary). The species reported for first time from aforementioned locality well anywhere eastern India and perhaps entire country. Individuals belonging to both sexes have been collected studied. native Khour-Abdullah Khor Al-Zubair waters Northwestern Gulf Arabia evidenced by earlier works its appearance in presently location great ecological significance. This account deals with description using compound microscopes drawings made camera-Lucida, be used reference future works.