Habitat is disturbed meadow (i.e., ex-lawn/field).
ID very kindly provided by Kyle Kittelberger on this corresponding post to iNaturalist:
https://www.inaturalist.org/observations/49541499
Kyle also offered the insight that this is a "female, straw-colored form". I was able to find some reference photos which matched quite well on this page at the UBC's Spencer Entomological Collection, under the heading "Hecalus montanus form B":
https://www.zoology.ubc.ca/entomology/main/Hemiptera/Cicadellidae/Deltocephalinae/