Stemborers (Pyralidae) are a family of Lepidoptera, which includes about 6200 species;
They are part of the superfamily Pyraloidea along with crambidae.
The opinion of some authors is that some subfamilies of crambidae belong to this family even though, some features, in adults and in larvae differ from the latter.
Adults often hold their wings folded to the side, in a fold flat, or rolled up, making their bodies like sticks.
They are divided into 5 subfamilies the Chrysauginae, the Epipaschiinae, the Galleriinae, the Phycitinae and Pyralinae.
A member to this family, well-known to man, is the Indian mealmoth (Plodia interpunctella),a small moth that infests flour of cereals,
pasta, dried fruit, organic animal substances, preservatives and so on.