Supra oesophagial ganglion is also called

Supra oesophagial ganglion is also called Brain.
The supraesophageal ganglion also known as arthropod brain or microbrain is the first part of the arthropod, especially insect, central nervous system. It receives and processes information from the first, second, and third metameres.
The supraesophageal ganglion lies dorsal to the esophagus and consists of three parts, each a pair of ganglia that may be more or less pronounced, reduced, or fused depending on the genus.