Digestive tract of the larva of  Mycetophila  fungorum de GEER  with two wavy blind sacs.
v. c. = blind sac,  oes = oesophagus,  card = cardinal vesicle,  mes = middle gut,  malp = Malphigian tubule,  gl.sal = salivary gland.
(After KRIVOSJEINA, 1969)