Occurrence of new defoliator insect pests on Dalbergia latifolia (Roxb.) in Uttarakhand, India

Abstract

The present study conducted in Uttarakhand, India with aim to examine the insect pests of Dalbergia latifolia. The commonly known as rosewood and naturally not grown in the study area. Rosewood is a significant timber-producing tree species native to South and Southeast Asia and holds economic importance. This species was introduced in Uttarakhand in the year 2010 and again in 2020 another introduction programme was initiated by ICFRE, Dehradun. Though, there was no study on insect pest of D. latifolia at introduced regions of Uttarakhand, India. To assess the status of insect pest in newer growing region, periodic survey was conducted and insect pests were observed infesting D. latifolia at nurseries and plantations. Total six insect pests were recorded in this study, out of which five insect species viz. Gastrophysa viridula, Chrysochus cobaltinus, Apoderus crenatus, Ectropis bhurmitra, and Hyposidra talaca were recorded for the first time, while previously recorded Plecopte rareflexa was also recorded from Uttarakhand. The research also delved into the nature of damage caused by these insect pests and their seasonal occurrence. By understanding the behavior of these insect pests and the patterns of damage they inflict, researchers can develop effective pest management strategies to mitigate any potential economic losses they may cause. Such knowledge is crucial for the introduction of D. latifolia in any newer region and conservation of Dalbergia latifolia in the region.