Ethmia semitenebrella
Scientific NameEthmia semitenebrella
FamilyDepressariidae
SubfamilyEthmiinae
Wingspan (mm)20
Wing Patternspotted
Primary Colorswhite, black, grey
HabitatArid and semi-arid regions, deserts, chaparral, scrublands
Geographic RangeSouthwestern United States, northern Mexico
Host PlantsPhacelia distans, Phacelia ramosissima, Phacelia tanacetifolia
Flight PeriodMarch to July
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae feed externally on the leaves of various Phacelia species. Pupation occurs in a cocoon, typically in the soil or leaf litter.
Identification TipsKey identification features include the distinctive black and white forewing pattern, particularly the large black spot near the base and the irregular streaking, along with its known range and host plant association.
Description
A small moth with striking white forewings patterned with bold, irregular black spots and streaks, and plain pale greyish-brown hindwings. The head and thorax are also white with black markings.
