Members of several major insect groups have diets comprised solely of liquids.  During feeding, many such insects impact plant and animal disease transmission rates, plant reproduction, and surreptitiously drain plant productivity. Despite these consequences, study of insect liquid-feeding biomechanics has progressed piecemeal.  Here, for the first time, we describe the transport of a Newtonian fluid through an insect foregut (Hymenoptera: Formicidae), using synchrotron X-ray imaging together with a contrasting agent in food (20% v/v honey in IsoVue; 14 cP, 3.6 g/mL), and report anatomical cycle frequencies, frequency coordination, bolus volumes, velocities, flow rates, and discuss fluid dynamics.  Camponotus herculeanus workers ingest fluids using a 4-phase mechanism that involves complex mouthpart motions, cibarial and pharyngeal pumps, and peristalsis of the esophagus and crop.  Cycle frequency decreases posteriorally, and is greatest for foregut regions operated by fast extrinsic muscles and lower for those having slow intrinsic musculature (glossa> cibarium= pharynx> esophagus= crop).  Cycle coordination among tandem anterior foregut regions proceeds to remove liquids from the environment, but lack of coordination among posterior foregut regions (esophagus and crop) creates a bottleneck at the petiolar sphincter.  Bolus volumes are constrained by morphological capacity (esophagus> cibarium= pharynx), and velocities are comparable through foregut regions, suggesting equivalent forces produced by fast and slow musculature.  Flow rates decrease posteriorally (cibarium= pharynx> esophagus), and together with the petiolar bottleneck, cause the esophagus to fill as feeding proceeds.  Bolus flow is laminar and dominated by viscous forces (Reynolds number < 0.5), which, combined with above data, allows for calculation of fluid forces and pressures active during ingestion.  Results should stimulate research of liquid-feeding biomechanics for insects feeding on non-Newtonian fluids, pressurized fluids, and for insects experiencing different selective forces (competition, predation) during their evolution.