Orthotylus is a genus of bugs from the family Miridae. There are more than 300 described species worldwide. The sheer number of species has led to the recognition of subgenera and groups, some of which may be promoted to genus level. Yamsunaga recognized the genus as non-monophyletic, and without consistent diagnostic characteristics.

Most of the species are plant feeders, some of them attacking important crops; however, some species also prey on the larvae of lepidoptera and diptera, as well as on psyllids and aphids.

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