Gulf Fritillary larva (Aqraulis vanillae) Purple Morph. This guy started the chrysalis stage later in the day. Also, apparently the purple morph is common in Texas but less so outside of the state.
Saltmarsh Moth larva (Estigmene acrea) I also have these guys in abundance in the black and the blond/black variations. As if the squash-type plants didn't already have enough problems with the SVB, these guys seem very particular to the squash and watermelon plants.