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Xanthotype sp.
This was pretty big (about 3" long).
Frederick H. Rindge states: ""No one has found a reliable way to recognize the species as yet except by genitalia. The adults of all species in this genus [Xanthotype] are, for practical purposes, externally indistinguishable from one another, as they are almost identical in color, maculation, and size." However more recently, X. sospeta and X. urticaria have been found to have identical DNA barcodes. If more research is done on this and the two prove to be the same species, it is likely the name will be X. sospeta, as that was the first species to be described.
http://bugguide.net/node/view/607033