Gymnetron tibiellum Desbrochers des Loges mature larva, head and mouth parts A head B antenna C clypeus and labrum D epipharynx E left mandible F maxillolabial complex. Abbreviations: at – antenna, lr – labral rods, sa – sensillum ampullaceum, sb – sensillum basiconicum, Se – sensorium, st – stemma; setae: als – anteriolateral, ams – anteromedial, cls – clypeal, des – dorsal epicranial, dms – dorsal malar, fs – frontal epicranial, les – lateral epicranial, ligs – ligular, lms – labral, mbs – basioventral, mds – mandibular dorsal, mpxs – maxillary palps, pes – postepicranial, pfs – palpiferal, pms – postmental, prms – premental, stps – stipital, ves – ventral, vms – ventral malar.