The Common Mestra is found primarily in South Texas but is an occasional stray throughout the state. I saw it with semi-regularity when I lived in San Angelo, Texas. It is a weak flier and tends to glide flat-winged.
There are only two whites that are common throughout most of Texas. One of those is the Checkered White which can be seen in every part of the state. Its white wings stand our against brightly colored flowers.