Fig. 3 in From Spinning Silk to Spreading Saliva: Mouthpart Remodeling in Manduca sexta (Lepidoptera: Sphingidae)

Fig. 3. The Lyonet's and labial glands in second (A, C, E) and third (B, D, F) instar larvae of MaNdUCa SexTa. The Lyonet's gland (Lg) is larger in the second instar than in the third instar.The chitinized branch (br) of the labial gland (lsg) is apparently closed.The diameter of the epithelial cell cluster composing the Lyonet's gland is less than half the size of the main branch of the labial gland.