This is a Mangora acalypha (thank you @marcrp for the id).
This picture is the result of 6 separated shots, done with different focus then “stacked” (Focus Stacking) to produce a final image with a much greater depth of field.
The base of 6 separated shots
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Behind the Scene
Canon EOS 7D + Canon EF 180mm ƒ/3.5L Macro USM + Canon Extender EF 2x II