Black-horned and Forbes' tree cricket nymphs are difficult to tell apart - they both have white dashes and spots.
...and often have a dark area down the center.
Some Forbes' have thick yellowish areas along the outer edges of the dorsal abdomen.
Forbes': Yellow thick strokes with very few spots.
This female Forbes' has a few more spots along with the yellowish lines along the side.
This young 4-spotted has a very distinct pattern. Note the whitish lines running down the sides, the darker strip down the middle, and the whitish edge to the dark strip.
This female 4-spotted still has hints of a darker area down the center bordered by white lines.
This Fast-calling female has neither lines or spots, but rather dashes.
Davis': Thick yellowish circles
Narrow-winged: Thick white loops and spots
Broad-winged tree crickets have a strip of red patterning on the abdomen. Note the < > marks.
Snowy: White spots and dashes
Western: Wide dark line down center with slightly lighter bordering lines.
Walker's tree cricket has prominent white on the outer edges.
Alexander's tree cricket has dots and dashes in a scattered pattern.