Geometrina

Tribe of Lepidoptera or Measuring-Worms, whose caterpillars are known as Loopers, from the mode of walking. They have five or six pairs of abdominal feet, by which they cling, while the anterior end is free. Many species are hurtful to fruit trees. The adult is slender, with large wings, which at rest are tectiform; ie . , the wings of the moths slope away from the back like the sides of a roof from the ridge. Birch-Moth ( A mph i das is betularia ).