File:5-Mon.phar.-th.cr. transv schema.404.jpg

Summary
5- Monomorium pharaonis: Schematic cross section of the thorax of a 12 weeks old mated queen. In addition to the esophagus, the lateral tracheal trunks have expanded. A = Adipocytes; B = Ventral nerve cord; M = leg muscles; O = esophagus; T = tracheae. (From Petersen-Braun, PhD-thesis 1973)