The study conducted at the Regional Coffee Research Station, Thandigudi in four villages during the year 2004- 05 to identify the source of inoculum and pattern of emergence of the coffee berry borer adult from gleanings (fallen fruits) and left-over arabica coffee berries revealed that irrespective of the locations surveyed, the population of coffee berry borer in the left over berries appeared to be the main source of inoculum for carryover of the pest to the next season’s crop. The mean number of borer adults that emerged from gleanings was high (21.72) due to rain. Hence, it is important to remove the left-over berries and gleanings to keep the population level low in the next season’s crop.