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
Behind the Scene
Canon EOS 7D + Canon EF 180mm ƒ/3.5L Macro USM + Canon Extender EF 2x II