Structure of the central nervous system in the blowfly, Protophormia terraenovae

Sakiko Shiga (Graduate School of Science, Osaka City University)

Fig.1. Left: Whole view of the central nervous system in the blowfly Protophormia terraenovae. In flies the brain (Br) and suboesophageal ganglion (SOG) are fused, and thoracic and abdominal ganglion are fused to become the thoracico-abdominal ganglion (TAG). Right: Enlarged views of the TAG. T1 LN, T2 LN and T3 LN are nerve roots running to the forelegs, middle legs and hind legs, respectively.

AN: antennal nerve
Br: brain
OL: optic lobe
SOG: suboesophageal ganglion
CN: cervical nerve
CC: cervical connective
T1 LN: prothoracic leg nerve
T2 LN: mesothoracic leg nerve
T3 LN: metathoracic leg nerve
TAG: thoracic-abdominal ganglion
FN: frontal nerve
PtN: pterothoracic nerve (wing sensory neuron)
HN: haltere nerve
AbN: abdominal nerve

Fig. 2. Horizontal sections of the brain and subesophageal ganglion in the blow fly, Protophormia terraenovae (8 um in paraffin sections, silver staining). In each panel, anterior direction to the bottom. Numbers in the right below indicate the number counted from the most ventral section. No. 38, 43, 48 and 55 show the subesophageal ganglion. No. 62, 65, 71, 77 and 84 contain the antennal lobes. The central body is found in No. 84, 88, 89 and 91, and the protocerebral bridge in No. 91. The mushroom body is found in No. 95, 99 and 105.


Strausfeld NJ, Seyan HS (1985) Convergence of visual, haltere, and prosternal inputs at neck motor neurons of Calliphora erythrocephala. Cell Tissue Res 40:601-615.

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