When Flies have Fleas

This picture-winged fly,  Rivellia species has a fairly large mite on its side.

In spite of the additional load, it was able to fly off with no apparent problem.



About the roused bear

Nature photographer from central Iowa.
This entry was posted in Biological diversity, insects and tagged , , . Bookmark the permalink.

3 Responses to When Flies have Fleas

  1. Mark Wetmore says:

    In 1733 Jonathan Swift wrote:

    The vermin only teaze and pinch
    Their foes superior by an inch.
    So, naturalists observe, a flea
    Has smaller fleas that on him prey;
    And these have smaller still to bite ’em,
    And so proceed ad infinitum.

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