| 1 | Mandible with large rectangular baso-ventral lobe (about as wide as mandible subbasally) or gradually widened baso-ventrally; pronope rather large and elliptical; in front of anterior ocellus flat, without a distinct impression | Opiognathus Fischer |
| – | Mandible normal, without distinct baso-ventral lobe or tooth, at most slightly widened ventrally; pronope large groove- or slit-like or round, rarely absent; area in front of anterior ocellus variable | Utetes Foerster |
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