Stage 16

Ao: antennal sensory organ

Bo: Bolwig's organ

Mo: maxillary sensory organ

PG: peripheral nerve glia

PG_sns: peripheral nerve glia of the stomatogastric nervous system

Bn: Bolwig's nerve

an: antennal nerve

fc: frontal connective

lpn: latero-pharyngeal nerve

mn: maxillary nerve

pcn: protocerebral connective

ccn: cervical connective

ol: optic lobe

SG_ol: subperineurial glia of the optic lobe