Yes, star trails.
If you look carefully at the point of origin of all the trails, they all follow the same trajectory. All parallel in their trajectory. There are two terminal lines in your first photo. I've marked them in white circles as A & B. They both follow the exact same wavy pattern. Meteors will not make two parallel wavy patterns, nor a curved trajectory. The origin and end point of the trails says it all, with the huge number of trails all following the same trajectory. Meteors do not do this, especially the same wiggly pattern at the end of their path. No spiderlings, no bugs either. Not ET as well.
Note especially in circle B that the trail ends at a star. Also, just to the right of box 2 there is another bright star, and it too has a trail coming off it. Most of the brighter stars do.
The origin of these would be one of two: 1, the mount hadn't stopped moving, slewing, when the shot was started; 2, there is a tracking error. Most likely the first. As for the variations in "exposure" of the trails, that's an artefact of the camera dealing with the movement of the points of light. Note also if you look carefully at the brighter stars, they are no sharp, but appear to display a vibratory shape, a shudder, as the mount stopped in its movement. An 8 second exposure is plenty to show this.
I see these all the time with my own video astronomy as I slew and recenter an object, including the variations in illumination of the stars. You need to wait until the mount has totally stopped slewing before you start an exposure. Some mounts beep when they've stopped slewing, others don't. It used to annoy me this beep... now it annoys me NOT to hear it!
Alex.