10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 3 2015 (July - September) The cigarette beetle, lessThan i greaterThan Lasioderma serricorne lessThan /i greaterThan (Fabricius) is one of the major pests for stored to­bacco which is widely distributed in the world. It is a pest of many stored products like spices, pet food, dried flowers etc. This study highlights the DNA barcoding and genetic diversity of the cigarette beetle and in discriminating global phylogeographical variants among the lessThan i greaterThan Lasioderma lessThan /i greaterThan species. From this study, lessThan i greaterThan L. serricorne lessThan /i greaterThan in different phylogeographical areas are in a same clade reveals its common ancestry. Here we report the partial sequence of cytochrome oxidase subunit I gene (COI) of lessThan i greaterThan L. serricorne lessThan /i greaterThan (GenBank Accession No. KM 216269) and its phylogenetic relationship with other related insect species. The COI DNA barcode developed in this study can be used for its accurate identification and phylogeographical analysis. RUKHSANA, K. AND SEBASTIAN, C. D. Lasioderma serricorne, cytochrome oxidase subunit I gene, DNA barcode, molecular phylogeny 877-882