Nisotra gemella (Erichson), third-instar larva A head B maxilla and labium C antenna, in lateral view D antenna, in dorso-lateral view E epipharynx F mandible. Abbreviations: ec- endocarina; f1–f3- setae on frontal area; fs- frontal suture; lg- ligula; lp- labial palp; ml- mala; mp- maxillary palp; pf- palpifer; pom- postmentum; prm- prementum; s1–s5- setae on sides of head; st- stripes; v1–v4- setae on vertex.