A new gland associated with the retrocerebral complex of the adult corn earworm, Helicoverpa zea

We report the discovery of a single-celled putative new gland associated with the retrocerebral complex in the adults of Helicoverpa zea. The gland was not observed in Manduca sexta and few other species of moths. The pair of glands, each 50.6 ± 5.5 μm in diameter, is located on either side of the recurrent nerve. Each gland is connected on one end through a fine nerve to the nervus corporis cardiaci-3 (NCC-3) and at the opposite end to the corpora allata through a thin fiber. The gland is composed of a giant cell with a large nucleus. The cytoplasm has an abundance of mitochondria in addition to dense bodies, electron lucent spheres, concentric whorls of rough endoplasmic reticulum and few vacuoles. At this stage we have no idea as to the function of this new gland.