Technical Bulletin, Edição 1519

21½ hours 60 hours 60-hour-old larva 84 hours abdominal anal organ antennal disc anteriorly appear basement membrane blastoderm ceca cell membranes cellular circular muscle cross section cuticle cyto cytoplasm dorsal vessel epicuticle epithelial sheath epithelium esophagus fat cells ganglia gastric cecum gastrulation gd FIGURE genital disc germ band Gonads hatch hemocoel hemocytes hindgut histoblasts house fly house fly larvae hy FIGURE hypodermis imaginal cells imaginal discs integument intestine invagination larva at 84 late last-instar larva later longitudinal lumen Malpighian tubule mesothoracic midintestine minutes muscle fibers nerve outer periphery periplasm pharynx plasm polar granules pole cells posterior midgut posterior pole posterior spiracle proventriculus pupa pupation rectum ring gland salivary duct salivary gland segments sgl FIGURE shown in figure sinus stomodaeum striated muscle subesophageal ganglion surface terior thoracic trachea tracheal trunk tube ventral nervous system ventriculus vitellophags yolk nuclei