. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 419 Contribution from the Bureau of Entomology L. O. HOWARD, Chief J^?"^P^U. Washington, D. C. November 9, 191© THE GRAPE LEAF-FOLDER. By J. F. Strauss, Entomological Assistant, Deciduous Fruit Insect Investigations. CONTENTS. Introduction 1 History 1 Distribution 3 Food plants 4 Extent and character of the injury 5 Description of the grape leaf-folder 6 Life history and habits 7 Natui'al enemies 8 Methods of control. 12 Literature cited 13 INTRODUCTION. The grape leaf-folder, Desmia funeralis Hiibn.
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 419 Contribution from the Bureau of Entomology L. O. HOWARD, Chief J^?"^P^U. Washington, D. C. November 9, 191© THE GRAPE LEAF-FOLDER. By J. F. Strauss, Entomological Assistant, Deciduous Fruit Insect Investigations. CONTENTS. Introduction 1 History 1 Distribution 3 Food plants 4 Extent and character of the injury 5 Description of the grape leaf-folder 6 Life history and habits 7 Natui'al enemies 8 Methods of control. 12 Literature cited 13 INTRODUCTION. The grape leaf-folder, Desmia funeralis Hiibn. (family Pyralidae) has long been known as a pest of grapevines. Since 1885 the injury inflicted by the larva has been described frequently, and different remedial measures have been suggested. However, the insect has not been the subject of very careful study, and references to it in hterature are mostly in the form of short notes in farm and horti- cultural journals. Certain facts concerning the Hfe history and habits of this insect were obtained during two seasons' observations in the vicinity of the city of Washington. HISTORY. The grape leaf-folder first appeared in hterature in 1796, when it was figured by Hiibner (1)^ under the name of Pyralis funeralis, Switzerland was given for the locality, which was evidently a mis- take, as pointed out by Guenee (5, p. 190) in 1854. Later Jltib- ner (2) placed the species in the genus Anania. In 1832 Westwood (4) established the genus Desmia and placed in it the species maculdlis, including as a probable synonym Botys 1 NumlKirs in lyarcnthcsLs refer to " Literature cited," p. 13, 65055"—Bull. 419—10. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O
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