15 



Remedies. 



A knowledge of the life history of this insect suggests to us a 

 few way8 in which it may be most easily combated and its damage 

 lessened. As the females hibernate above ground, burning in 

 early spring mnst destroy large numbers of them. To be effective, 

 the burning must be close and thorough, and the burned space 

 either quite large or isolated from other infested fields. This 

 must be done before the grass starts, which is usually about the 

 first of April, because the females hibernate very close to the base 

 of the stems, and a close burn after the green blades appear can- 

 not be obtained. 



The damage appears to be most severe on worn-out meadows, 

 fields and lawns. This suggests stimulating the plants, to give 

 them additional vigor, and harvesting as early as possible. The 

 June grass should either be cut as soon as the heads begin to turn 

 white, or fed green. 



So far as I can learn, the seed of this grass is sold only in lawn 

 mixtures, and is not used for field seeding. The June grass comes 

 in gradually, as the stouter-growing species usually sown run out. 

 Attacks are most severe on fields that have been seeded for several 

 years and have become partially exhausted. This suggests plough- 

 ing deeply, and planting for at least one year with some cultivated 

 crop before reseeding. 



Literature. 



Limothrips ponphagus Comst., Syllabus of a Course of Lectures (men- 

 tion of the larva only) (1875). 



Limothrips poaphagus Lint., Rep't N. Y. Agr'l Soc. (larva only) (1881- 

 82). 



Thrips striata Osb., Can. Ent., Vol. XV., pag-e 155 (1883). 



Litnothrips p)onphagus P'ern., Grasses of Maine, page 42 (1885). 



N. E. Planner, June 19 (1886). 



Lint., 3d Rep't Ins. N. Y., pages 96-98 (1887). 



Limothripis poaphagus Comst., Tntrod. to Ent., page 127 (1888). 



Thrips striatals Pack., Ent. for Beginners, page 73 (1888). 



Fletcher, Ent. Am., IV., page 152 (1888). 



Howard, Ent. Am , IV., page 152 (1888). 



Limothrips poaphagtis Osb., Ins. Life, I., page 140 (1888). 



Thrips striatus Pack., Stand Nat. Hist., 2d Ed., II., Append. (1888). 



Fletcher, 19th Rep't Ent. Soc. Ont, page 11 (1888). 



Fletcher, Ann. Rep't Exp't Farms, pages 59-62 (1888). 



Limothrips poaphagus Lint., Rep't N. Y. Agr'l Soc. (1888). 



Phlceothrips poaphagus Fletcher, 20th Rep't Ent. Soc. Out., pages 2, 22 



(1889). 

 Brodie, 20th Rep't Ent. Soc. Ont., page 8 (1889). 



