part of epicranial plate hypocranium In insects with cranial parts on the ventral aspect of the head, the part of the cranium facing ventrad; indefinitely delimited laterally and often not homologous among different insects. In mosquito larvae, including the labiogula and the lateralia about as far laterally as the lower margins of the compound eyes. TGMA:0000722 TGMA:0000722 default_namespace