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We have found it in a small, cold watered mountain brook in Romania at 15 April 2007, on a small piece of pine wood (on the underside of it).
We suppose that it might be Chironomidae eggs. What is your opinion?

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First image in the zip:

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Second image in zip:

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Second zip was in http://www.dipter...ad_id=5685.
First image in this zip:

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Second image in that zip:

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Third image in that zip:

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I don't think these are Diptera eggs - I suspect they may be Ephemeroptera (mayflies), but cannot confirm that yet!