Figure 8. FMRFamide-like immunoreactive (FLI) cells at the foregut/midgut junction in Tabanus nigrovittatus. A) A cluster of large FLI cells rest on the dorsal surface of the foregut just anterior to the junction with the midgut. Processes that appear to be associated with these cells form a network that innervates the entire outer surface of the anterior midgut. Punctate FLI processes on the esophagus also communicate with the FLI cell bodies (arrow). B) Two nerves originating from the region of the FLI cell bodies at the foregut/midgut junction run down the lateral sides of the crop duct (arrows). E, esophagus; CD, crop duct.