Chilo infuscatellus jungle rice ("Echinochloa colona"), barley ("Hordeum vulgare"), rice ("Oryza sativa"), millet ("Panicum"), pearl millet ("Pennisetum glaucum"), sugarcane ("Saccharum officinarum"), sorghum ("Sorghum bicolor") and maize ("Zea mays"). Young larvae eat small holes in the leaves, particularly the leaf sheaths. As they grow, the larvae feed on the tips of the shoots, killing the growing points, and later still, they bore into the stems, creating galleries and producing frass which drops from the holes. The stems become brittle and the dead hearts of the plants are characteristic of this pest. Control of "Chilo infuscatellus" in sugar plantations is difficult. The plants are
Rissoina oryza Rissoina oryza Rissoina oryza is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. The height of the small, white shell attains 2 mm. The shell has an oblong-ovate shape. It is solid, smooth, and shining, The spire is moderately elevated, and rather rapidly tapering. The apex is obtuse. The 6-7 whorls are flatly convex. The body whoprl is rather large, and slightly compressed beneath. The suture is faintly impressed and broadly margined beneath. The rather large aperture is oblique and has a sub-ovate shape. The thick peristome is dilated. The columella is