Moved from Green Bird Grasshopper.

Moved from Bird Grasshoppers.

based on location and the fat femora of the front four legs, this would be S. shoshone. I think it's the only species found in n. California. The yellow stripe on top is seen more often in some populatons than in others. Green color and red hind tibiae are characteristic of this species. S. albolineata is normally less rich green or yellowish ot blackish in color, and usually there are contrasting markings on the hind femora. However, there are populations in central NM that I am calling S. albolineata (they may be odd S. obscura instead, but fit less well there), and those do look similar to this one. As far as I know S. albolineata is not recorded from California, and is not recorded from anywhere as far north as Mt. Lassen.

There is also S. lineata (not recorded from California either - as far as I know), which can look very much like this one. The only real distinction is that in S. shoshone there are no black dots on the abdomen, and on S. lineata (and most other species; I wish I could see the side of the abdomen on this one!) there are. S. lineata almost always has the yellow stripe on top, S. shoshone often doesn't. To me it seems that S. shoshone and S. lineata represent ecological/geographic variations of one species, and S. albolineata + S. obscura variations of another species. If I hadn't known the location for this one, I would have probably said it looked like S. lineata!

This looks to be Schistocerca albolineata. The bright reddish tibiae help key to this species, as well as the S. obscura-like markings.

This is some kind of bird grasshopper in the genus Schistocerca. There shouldn't be more than at most two-three species that occur in your area, as this is chiefly a southern genus that occasionally migrates northward.