THE MARGUERITE FLY. 23 



the skins of the leaf, eating their way in irregular lines or broad patches, 

 and these are the whitish markings observable on the surface of the leaf. 

 After two weeks of energetic eating it thrusts its head outside of the skin 

 of the leaf and pupates. From the laying of the egg till the perfect insect 

 issues from the chrysalis is within five weeks." 



Dr. Lintner (Fourth Report on the Injurious and Other Insects of the 

 State of New York, 1888, p. 76) mentions Queens, Long Island, as another 

 locality where the insect was present at about the same time it was operat- 

 ing at Glen Cove Landing and Hinsdale. 



The depredations of the fly seem to have been noticed elsewhere in New 

 York about the same time, infested chrysanthemum leaves having been 

 received from Mr. Charles Anderson of New York by the Department of 

 Agriculture at Wasliington, Dec. 30, 1886. (Coquillett, Insect Life, VII., 

 1894-95, p. 399.) 



Two weeks later, Jan. 14, 1887. infested marguerite leaves were received 

 by the Department of Agriculture at Washington from Prof. Thomas 

 Meehan of Germantown, Pa. 



In 1889 the insect was foun d mining in the leaves of Japanese chrysan- 

 themums (in the Arnold Arboretum?), near Boston, Mass. (F. J. Jack, 

 Garden and Forest, III., 1890, p. 440), and according to Mr. Jack it had 

 been troublesome in other places in the vicinity of Boston, mining in the 

 leaves of chrysanthemums, eupatoriums and cinerarias in greenhouses. 

 (Lintner, Seventh Report on the Injurious and Other Insects of the State 

 of New York, 1891, pp. 244, 245.) 



In 1890 infested marguerite and feverfew leaves were received by the 

 Federal Department of Agriculture from Irvington, N. Y., Danbury, 

 Conn., and Brooklyn, N. Y. (Coquillett, -Insect Life, VII., 1894-95, 

 p. 400.) 



In February, 1893, infested cineraria leaves were received by Dr. Lintner 

 from the greenhouses of St. Vincent's Male Orphan Asylum, Albany, 

 N. Y. (Tenth Report on the Injurious and Other Insects of the State 

 of New York, 1895, p. 510.) 



In April, 1907, Mr. C. W. Johnson of the Boston Museum of Natural 

 History received specimens of the adult fly for identification from Prof. 

 E. D. Sanderson of New Hampshire, indicating that it was causing trouble 

 in that State about that time. 



In 1911 it was reported in Connecticut again. (Britton, Eleventh 

 Report of the State Entomologist, 1911, p. 342.) 



In 1912 it was discovered mining marguerites in a greenhouse in Helena, 

 Mont. (Cooley, Tenth Annual Report of the State Entomologist, Bull. 

 No. 92, November, 1912, p. 56.) 



During the spring and sunomer of the same year a very serious outbreak 

 occurred in some greenhouses in Milwaukee, Wis., which had imported 

 infested chrysanthemums and marguerites from Boston, Mass. It was 

 also reported from Chicago "and other parts." (Sanders, Journal of 

 Economic Entomology, Vol. V., No. 6, December, 1912, p. 472.) 



