抄録
An outbreak of Crypticerya jacobsoni (GREEN) was encountered on Rakata Besar, one of the Krakatau Islands, which are situated in the Sunda Strait between Java and Sumatra and are known to have been totally sterilized in 1883 by the world-famous big eruption. A huge number of leaves and twigs of various plant species were found to be infested by many adult females and larvae of the insect. They were most abundant on Ficus fistulosa and followed by Pipturus argenteus. Nearly 100% of their leaves were infested. Such a scene was encountered in almost every place on Rakata Besar, but scale insect was relatively few on the three other neighbouring islands.
