The biology and ecology of the Powder post beetle Lyctus im­pressus Lom (Lyctidae: Coleoptera) was investigated under the prevail­ing laboratory conditions. Female beetle lays its eggs in pores on the surface of wood. Adult longevity was 10.05 days and 8.93 days for fe­male and male, respectively. The pre-pupal, pupal and adult hardness du­rations were 5-11 days, 5-17 days, and 3-10 days. respectively. The pest undergoes three annual generations. Adult activity period extends from the 2nd week of February until the 4th week of October with three distinct population peaks, during the 1st half of April, 4th week of June to 3rd week of July and 4th week of August to 3rd week of September. Temperature appeared to be a principal weather factor influenc­ing beetles activity, while the effect of relative humidity was less evi­dent.