Rambong beetle
This short note by H. N. Ridley (1901) describes the longicorn beetle Batocera octomaculata as a pest of the India-rubber tree (Ficus elastica) in Selangor, providing detailed morphological accounts of both the grub and the adult beetle.
Summary
Ridley reports that specimens were sent from two localities in Selangor, where the beetle and its grub were causing serious damage to rubber plantations. The grub, up to two and a half inches long, bores elliptic tunnels through the trunk and larger boughs, while the adult beetle gnaws bark, bites off buds, and voraciously devours leaves. The note also records that the species attacks Ficus indica and Ficus benjamina (Waringin), and probably other wild figs (p. 138).
Ridley provides a full morphological description of the adult: a large beetle one and a half to two inches long with a brown head, dark brown thorax bearing two red crescents, and dark brown elytra marked with eight white spots and black shining raised dots near the shoulder. He notes the beetle is diurnal, attracted to light, squeaks loudly when caught, and can bite severely. He concludes that the pest can be kept in check by removing unnecessary fig trees near plantations and carefully attending to young plants (p. 139).