Oecanthus varicornis
A male Different-horned tree cricket singing in Bentsen-Rio Grande Valley State Park, Texas.
Note the very wide wings on this male Different-horned tree cricket.
Tree crickets groom themselves frequently.
Females are light green. This species have deep red
Note the all white face. This differs from Texas tree cricket.
Most have a single black line on the front of the first two antennal segments.
Nymphs have a reddish strip down the center.
This 3rd instar nymph still displays the reddish strip.
To read the original description: https://archive.org/details/catalogueofspeci01britrich/page/94/mode/1up