51.0 MB (3.4 MB compressed)
4913 x 3626 pixels
41.7 x 30.7 cm ⏐ 16.4 x 12.1 in (300dpi)
POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Proboscis of blowfly. Coloured scanning electron micrograph (SEM) of the proboscis of a blowfly, Calliphora vomitoria, also known as the blue- bottle. The labella (two lobes, coloured grey) are seen, with parallel grooves (pseudotracheae) channelling into a central hollow tube. The proboscis is used for the ingestion of food, and acts like a sponge. Enzymes are exuded from the proboscis onto the food substrate (rotting animal or vegetable matter). These enzymes digest the food, turning it into a pulpy liquid, which is then sucked up by the proboscis. Further digestion takes place within the fly's gut. Magnification: x55 at 5x7cm size.
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