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Chlorochroa ligata
Plants.
Pentatomidae, Pentatominae, Nezarini, Chlorochroa ligata I would say. Chinavia hilaris looks different and has no reddish margin. Chlorochroa ligata is variable, depending from the area. Northern ones are green, southern ones are black.
http://bugguide.net/node/view/5908/bgpag...
You also may check the other three similar ones:
http://bugguide.net/node/view/340935/bgp...
http://bugguide.net/node/view/192463/bgp...
http://bugguide.net/node/view/340936/bgp...
and compare with yours and these ones:
http://bugguide.net/node/view/22454/bgim...