Kebnat
INSECTS

Horned Spanworm Moth

Nematocampa resistaria

Insects
Native
Horned Spanworm Moth, photo 1 of 5
Horned Spanworm Moth, Caterpillar
Horned Spanworm Moth, Male
19–25 mmWingspan

Butterfly or moth in the family Geometridae with a wingspan of 19–25 mm. Feeds on plants.

There are 506 observations of Horned Spanworm Moth in Québec, mostly in Abitibi-Témiscamingue, Estrie and Capitale-Nationale, and it has been reported in every region. They peak in July and become rare from September to May.

Through the year

JFMAMJJASOND

Where to see it

  1. Abitibi-Témiscamingue106
  2. Estrie101
  3. Capitale-Nationale53
  4. Montérégie50
  5. Outaouais45
  6. Gaspésie–Îles-de-la-Madeleine23
  7. Laurentides19
  8. Saguenay–Lac-Saint-Jean18
  9. Chaudière-Appalaches15
  10. Lanaudière15
  11. Côte-Nord14
  12. Mauricie11
  13. Nord-du-Québec10
  14. Bas-Saint-Laurent10
  15. Montréal9
  16. Centre-du-Québec5
  17. Laval2

What the caterpillar eats

DEADLY
Horse chestnutAesculus hippocastanum
TOXIC
HopsHumulus lupulus
American chestnutCastanea dentata
Wild black currantRibes americanum
European crab appleMalus sylvestris
Swamp currantRibes lacustre
Allegheny blackberryRubus allegheniensis
Prairie crab appleMalus ioensis
Cultivated currantRibes rubrum
TOXIC
Black locustRobinia pseudoacacia
American red raspberryRubus idaeus

Similar species

Oak Besma MothBesma quercivoraria
Small Phigalia MothPhigalia strigataria
Greater Grapevine Looper MothEulithis gracilineata
Friendly Probole MothProbole amicaria
Yellow-dusted Cream MothCabera erythemaria
Hemlock Looper MothLambdina fiscellaria
Large Maple Spanworm MothProchoerodes lineola
Lesser Grapevine Looper MothEulithis diversilineata
Small EngrailedEctropis crepuscularia
Hag MothPhobetron pithecium
Brown-tipped ThornSelenia alciphearia
Common Tan WavePleuroprucha insulsaria