Indeterminate Dart
Common NameIndeterminate Dart
Scientific NameAdelphagrotis indeterminata
FamilyNoctuidae
SubfamilyNoctuinae
Wingspan (mm)38
Wing Patterncryptic
Primary Colorsdark brown, reddish-brown, black, tan
HabitatConiferous and mixed forests, woodlands
Geographic RangeWestern North America (British Columbia south to California, east to Montana and Colorado)
Host PlantsAlnus, Salix, Populus, Ribes, Vaccinium, various conifers and herbaceous plants
Flight PeriodJuly to October
Flight Styledarting
Conservation Statusleast-concern
Lifecycle NotesLarvae are cutworms, feeding on a variety of plants. They typically overwinter as larvae or pupae, emerging as adults in late summer to fall.
Identification TipsKey features include the dark brown to reddish-brown forewings with a mottled appearance, and the distinct, often lighter tan or orange-brown reniform and orbicular spots. A dark basal dash is also often present.
Description
A medium-sized moth with dark brown to reddish-brown forewings, featuring a mottled, cryptic pattern. It has prominent, often lighter tan or orange-brown reniform and orbicular spots that contrast with the darker ground color.
