Some kind of larva, photographed with a four colour segment and darkfield Rheinberg filter.
The coloured circle is a little air bubble.
Byomic BYO500T microscope /CIOC XDS-1 invert.
Byomic ST-340 stereomicroscope
Olympus BHM Metallurgical Microscope
Canon EOS 7D Mark II / Canon MP-E65
Cognisys StackShot
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