Occurrence of Deep-sea shrimp, Hadropenaeus lucasii (Spence Bate, 1881) from the southwest coast of India.The present study provides an integrative report combining morphological and molecular analysis of the deep sea shrimp species Hadropenaeus lucasii (Spence Bate, 1881) from the southwest coast of India.  The present specimen was obtained from the depths of 200-300m from the commercial bottom trawlers operated off Sakthikulangara fishing harbour off Kollam, Kerala.  A phylogenetic analysis was used to explore the relationships of the genus.  DNA barcoding and phylogenetic analysis were used to explore the relationship of the genus Hadropenaeus based on mitochondrial gene (16S: OK571387, OK571388; COI: OK569849, OK569850) sequences of the present specimen with the sequences retrieved from NCBI GenBank revealed an interspecies genetic divergence of 0.0% to 0.6%.
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