Large hypermastigid (450-500 µm) symbiont in Mastotermes darwiniensis. Body broadly triangular in shape with an anterior dome-shaped rostrum completely flagellated. Cell body covered with longitudinal rows of flagella except the amoeboid posterior part which is separated by a girdle and used for wood ingestion. The nucleus is situated in the anterior region; the axostylar fibres surround the nucleus and some group backwards to form an axial axostylar trunk. Deltotrichonympha operculata from Mastotermes darwiniensis girdle revealed by immunofluorescence.
This image was taken by Guy Brugerolle. Image copyright: Guy Brugerolle, used under license.
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