All potential pests (e.g., defoliating lepidopterans) of Eucalyptus L’Hér. (Myrtaceae) are important to be recorded because multiple species from this plant genus ubiquitously planted in forest plantations across the tropics, including Sumatra, Indonesia. The objective study was record, for first time, a closest avocado leafroller, Homona spargotis Meyrick, 1910 (Lepidoptera: Tortricidae) on gr...

Tetracona amathealis (Walker, 1859) (Lepidoptera: Crambidae) is previously known from Australia and New Guinea, where it feeds on the native Eucalyptus tereticornis Sm. (Myrtaceae). The objective of this study was report, for first time, T. in Indonesia as well to record new host plants insect. Were collected manually a grandis W. Hill. × pellita F. Muell. hybrid commercial plantation Riau, Sum...

activated the p-nitrophenyl acetateand p-nitrophenyl butyrate-hydrolysing activity of sheep serum at a significantly slower rate than it did the paraoxon-hydrolysing activity. From this and supporting evidence involving theKm for hydrolysis activity of sheep, rabbit and hog sera and of purified paraoxonase towards p-nitrophenyl acetate, it was concluded that a new esterase hydrolysing pnitrophe...