None found
Common NameNone found
Scientific NameEucosma grindeliana
FamilyTortricidae
SubfamilyOlethreutinae
Wingspan (mm)17
Primary Colorspale yellow, cream, brown
HabitatDry open areas, grasslands, roadsides, and other habitats where gumweed (Grindelia) grows.
Geographic RangeWestern North America, including the western United States and southwestern Canada.
Host PlantsGrindelia squarrosa, Grindelia camporum, Gumweed species
Flight PeriodMay to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesThe larvae of Eucosma grindeliana are borers, feeding within the flower heads and stems of Grindelia (gumweed) species; pupation likely occurs within the host plant or in the soil.
Identification TipsKey features for identification include its small size, the distinctive pale yellow mottled forewing pattern, and its strong association with Grindelia host plants; however, definitive species identification often requires examination of the genitalia.
Description
A small moth characterized by its pale yellow to cream-colored forewings, which are often marked with faint darker streaks and a mottled pattern, especially towards the outer edge.
