5 mm
Probably picked up at the University of Idaho Arboretum when I visited today
BugGuide: prob. D. andersoni....BUT
need to see the spiracular plate to be sure
~ 1 mm
On Snow in Summer (Cerastium tomentosum) flowers
BugGuide ID
Possibly Balaustium (Erythraeidae), as it looks very much like this photo: https://bugguide.net/node/view/922372