| 词条 | Ancylis discigerana |
| 释义 |
| image = | image_caption = | image2 = | image2_caption = | taxon = Ancylis discigerana | authority = (Walker, 1863)[1] | synonyms =
}}Ancylis discigerana, the birch leaffolder or yellow birch leaffolder moth, is a moth of the family Tortricidae. It is found in north-eastern North America.[2] The wingspan is 13–14 mm. There is one generation per year.[3] The larvae feed on Betula alleghaniensis. The first two instars skeletonise the lower surface of a leaf of their host plant. They feed from beneath a sheet of silk that is constructed between two lateral veins. Third instar larvae move to the upper surface of a different leaf and fold it lengthwise. They then feed on the upper epidermis within the fold until the leaf falls down. GalleryReferences1. ^Ancylis at tortricidae.com {{Taxonbar|from=Q4753118}}{{Olethreutinae-stub}}2. ^Bug Guide 3. ^[https://archive.is/20120712235336/http://pubs.esc-sec.ca/doi/abs/10.4039/Ent113265-4 Biology of Ancylis discigerana (Lepidoptera: Tortricidae)] 3 : Moths described in 1863|Enarmoniini|Moths of North America |
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