Sphinx vashti Strecker, 
Status: Occasional resident
Larval Hostplant(s): Snow and Coralberry (Symphoricarpos sp.).
Range: This moth is a resident in the western half of the country (and state) with only a handful of records east of Nebraska.
NENHP Ranking: Not listed
Broods/Flight Times: Reported to be single brooded. There are Nebraska records from May to August.
Habitat: Often found in prairies, riparian floodplains and forest margins where hostplants are present.
Avg. Wingspan: 3 – 4 Inches
Overwintering: As pupa in the soil.
Notes: This is a western species, becoming rarer eastward.