part of part of develops from develops from imaginal disc ectoderm-derived structure insect larval labral segment insect clypeo-labral disc Imaginal disc that in the adults gives rise to the labrum, anterior and posterior cibarial plates, fish trap bristles, epipharyngeal sclerite and clypeus (Cohen, 1993). UBERON:6001765 FBbt:00001765 clypeolabral disc insect adult clypeo-labral primordium