Any of several slender hemipteran bugs of the genus Leptocorisa (family Alydidae), which are pests of ripening rice grains in south and south-east Asia.
Origin
Late 19th century.
Definition of rice bug in US English:
rice bug
noun
Any of several slender hemipteran bugs of the genus Leptocorisa (family Alydidae), which are pests of ripening rice grains in south and south-east Asia.