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The dimple effect markings on the abdomen and the bands on the legs suggest Walnut Orb Weaver (Nuctenea umbratica) to me. The size and proportion of the abdomen indicates a male.
The size and proportion of the abdomen indicates a male.
Looking a bit closer at the photo it is unquestionably male and not a juvenile female as the enlarged tips of the pedipalps are visible. This dude is ready to make love, not war.