Horned Spanworm Moth
Common NameHorned Spanworm Moth
Scientific NameNematocampa resistaria
FamilyGeometridae
SubfamilyEnnominae
Wingspan (mm)25
Primary Colorscream, brown, tan
HabitatDeciduous and mixed forests, woodlands, suburban areas
Geographic RangeEastern North America, from Canada south to Florida and west to Texas
Host Plantsoak, maple, birch, willow, hemlock, pine
Flight PeriodMay to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesUndergoes complete metamorphosis. The larvae, known as horned spanworms, are loopers with prominent tubercles or 'horns' on their backs, mimicking twigs. They pupate in the soil or leaf litter.
Identification TipsThe unique 'stained glass' or 'cracked porcelain' wing pattern with pale cream and dark brown markings is unmistakable. The wavy outer wing margins are also characteristic.
Description
This small moth has pale cream-colored wings intricately patterned with dark brown veins and patches, creating a distinctive reticulated or 'cracked porcelain' effect, often with darker shading towards the outer margins.
