Abgralaspis narianus is a major pest of Dalbergia sisoo throughout India. An investigation was carried out the D. sissoo, plant infestation, population intensity of armored scale seasonal variation in population. The material was collected from the host plant Dalbergia sisso from there bark, twigs, leaves, fruits and stems. Abgrallaspis narianus is polyphagous and it infest on various economical and commercial trees. It have been observed that the infestation is maximum during the month of January and February, where as minimum in during month of March and April. Seasonal variation has been observed in population of A. narinus both in rural and urban area. These shows great variation, the minimum population has been observed during leaf fall season. While maximum population has been observed during winter season.