the epidermis of the adult head of drosophila is composed of the derivatives of three pairs of imaginal discs : the labial discs which form the proboscis , the cibarial discs which form the clypeolabrum , and the eye-antennal discs which form all of the remaining head structures ( i.e. , the eyes , antennae , head capsule , and maxillary palps ) .
C0023759
labial
C0018670
head