Now how the heck did I do that? And, how do I get rid of the duplicate? Fun times : ]

Now the duplicate text vanished and there is the above comment that makes no sense - oh well.

Ah, the wonderful confusion of two authors giving the same name to two different things. The zipcode cite has a lot of bugs to be worked out. "Trimerotropis cincta Saussure, 1884" is a synonym of T. pallidipennis and a later homonym of T. cincta Thomas 1870. It is therefore invalid. The older and valid T. cincta was described from Tesuque Creek, Santa Fe County, New Mexico. It also is the type species of the genus "Pseudotrimerotropis", which could some day be resurrected. It is related to T. fontana, keobeli, santabarbara, occulens, infantilis, and occidentaloides, which I suspect are mostly or perhaps even all variants of one species, and the oldest name of the lot is T. cincta. T. bifasciata is probably also closely related, but is distinctly different. T. pallidipennis is in a very different group, and will probably be placed in a different genus eventually. I'm betting that the T. cincta group is closer to Conozoa, and am waiting for somebody to do molecular studies.
A good reference for names of Orthoptera is:
http://polyneoptera.speciesfile.org/Common/basic/Taxa.aspx
The page for T. cincta is: http://orthoptera.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=51263
The page for T. pallidipennis is:
http://orthoptera.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=51283
These files are in the process of being updated, so lots of dead-end links come up if you do a web search. For now the ones above work.

These specimens certainly don't look like T. pallidipennis that I have seen. The explanation you give here is very enlightening, thank you!