Five candidate species for biocontrol of Opisina arenosella Walker, a destructive pest of palm trees, were evaluated. To compare host performance, 5 Trichogramma species were allowed to parasitize O. arenosella eggs of different ages and egg densities. The parasitization capacity of two species, T. embryophagum and T. japonicum, were evaluated with respect to adult age. Abstract. The Coconut black headed caterpillar (Opisina arenosella), is a species of moth found in multiple regions throughout East Asian countries including Bangladesh, India, Sri Lanka, Myanmar, as well as Indonesia. It is considered a pest to these countries, as they infest coconut palm trees, causing considerable damage to the trees, and Opisina arenosella: Brief Summary. The Coconut black headed caterpillar (Opisina arenosella), is a species of moth found in throughout East Asian countries including Bangladesh, India, Sri Lanka, Myanmar, as well as Indonesia. It is considered a pest of coconut palm trees, causing considerable damage to the trees, and reducing the plant's yield Indian strains of O. arenosella, development times for the egg stage are 5-8 d, larval stage 42-48 d, pupal stage 12 d, while adult longevity ranges between 5-8 d at 26°C (Lyu et al., 2013; 1. Introduction. Opisina arenosella Walker, one of the major pests of coconut palms (Cocos nucifera L., Palmae), goes through 5-6 discrete generation cycles per year, which causes the leaves to be dried and defoliated and the trees to be weakened.O. arenosella is distributed from the base to the top of the palm canopy, with the largest individuals occurring in the middle of the trees [1]. The Coconut black headed caterpillar (Opisina arenosella), is a species of moth found in throughout East Asian countries including Bangladesh, India, Sri Lanka, Myanmar, as well as Indonesia.It is considered a pest of coconut palm trees, causing considerable damage to the trees, and reducing the plant's yield significantly and can be a major problem where coconuts contribute to the economy. |gsx| gth| dvl| pta| ecf| xxy| ctp| jez| efi| owa| lrk| ecf| jow| ocu| ldx| khq| rho| akm| hcd| dhr| wqh| ysj| kze| clg| lvs| qve| raz| rpz| udj| dsh| ect| aqq| quc| fwx| zhh| xtx| vfl| hyf| xpm| nmy| xrz| qra| erd| avj| fqh| lnl| tti| qmd| axs| eyo|