Ca 30 larvae in web nest about 2 m high in a Prunus virginiana surrounded by grasses above a stream terrace. One of several nests noted in chokecherries along about 2 km of stream this fall. Frass present and chokecherry leaves brown and dry within nest. Elevation ca 4000 feet. Disturbed, shrubby riparian corridor on stream restoration site within a patchwork of native and non-native grassland. My apologies for the poor image quality.