Ladder-backed Ethmia Moth
Common NameLadder-backed Ethmia Moth
Scientific NameEthmia maculata
FamilyDepressariidae
SubfamilyEthmiinae
Wingspan (mm)18
Wing Patternstriped
Primary Colorswhite, black, orange
HabitatOpen woodlands, fields, prairies, and disturbed areas where host plants are present.
Geographic RangeEastern and Central North America, from southern Canada south to Florida and west to Texas and Kansas.
Host PlantsLithospermum canescens, Lithospermum caroliniense, Lithospermum incisum
Flight PeriodMay to August, often with two broods.
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae feed on the leaves of various *Lithospermum* species (gromwell). Pupation occurs in a cocoon, typically in leaf litter or soil, leading to adult emergence in late spring and summer.
Identification TipsLook for the unique white forewings with strong black longitudinal stripes and spots, which often merge to form a 'ladder' pattern along the back. The bright orange-red anal tuft is also a key distinguishing feature.
Description
A small, slender moth characterized by its striking white forewings adorned with bold black longitudinal stripes and spots, creating a distinctive ladder-like pattern on its dorsum when at rest. The tip of the abdomen features a prominent orange-red tuft.
