First Report of an Ice Cream Cone Bagworm Manatha Conglacia Haettenschwiler (Lepidoptera: Psychidae) in Oil Palm Plantations of Central Kalimantan, Indonesia

Abstract

Bagworm is a defoliating insect in oil palm plantations that recently became the main problem since reported can decrease the production significantly. Metisa plana, Mahasena corbetti, Pteroma pendula are types of bagworms can be found in several areas in Indonesia. The objective of this study was to identify bagworm species (Lepidoptera: Psychidae) on oil palm plantation in PT Bumitama Gunajaya Abadi in Pangkalan Bun, Central Kalimantan, Indonesia. A total of 75 bagworms based on survey results from 12 oil palm plant blocks (± 360 hectares) were collected and brought to the Pundu Entomology Laboratory for identification. The bagworm was identified as Manatha conglacia known as an ice cream cone bagworm based on morphological characteristics of the bag. The results of the census revealed that the highest population was found in block W60 with a total population rate of 5.62 larvae of bagworms per frond. This new bagworm report has now become guidance for identification for type of bagworm attack in PT Bumitama Gunajaya Agro, since this bagworm can cause serious damage with defoliating as other types of bagworms.