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Vanessa virginiensis
Vanessa annabella should not be found in Texas on a regular base and is missing the typical white spot on the forewing. In my eyes this one is Vanessa virginiensis, American Lady (or American Painted Lady).
http://en.wikipedia.org/wiki/American_Pa...
To compare Vanessa annabella:
http://www.butterfliesandmoths.org/speci...
You might want to double check the pictures, but it looks like west coast lady to me