16 BULLETIN 808, U. S. DEPARTMENT OF AGRICULTURE. 
HOST PLANTS. 
This species has been bred in confinement since 1909 and numerous 
attempts have been made to rear it on hosts other than timothy, with 
negative results. 
LIFE HISTORY. 
Larvae remain in old stubble and in volunteer growth in waste 
places throughout the summer and winter, pupating in spring. The 
adults emerge in May. Males normally occur. The egg is shown in 
figure 7 at c. 
THE ORCHARD GRASS STRAW-WORM. 1 
The orchard grass straw-worm was recently described by the 
writer and Mr. W. T. Emery (10, p. 116). It was found first in 1901 
by F. M. Webster, according to Bureau records. Since that time it 
has been collected by various members of the branch of Cereal and 
Forage Insect Investigations. The writer has been rearing it in con- 
finement since 1911. It has been reared from orchard grass collected 
in Massachusetts, New York, Pennsylvania, Ohio, Michigan, Mary- 
land, Virginia, Tennessee, and Utah. 
MANNEE OF INJURY. 
H. dactylicola affects the plant in the same manner as does albo- 
maculata. The writer has never found orchard grass as seriously 
affected as timothy, one reason probably being that it is not grown 
as generally. Orchard grass probably will not be as seriously in- 
jured by dactylicola as timothy is by aTbomaculata since the former 
plant is larger and more woody than timothy. 
HOST PLANTS. 
This species has not been reared from any host other than orchard 
grass. 
LIFE HISTORY. 
Larvae remain in the old stubble and in old volunteer plants 
throughout the summer and winter, pupate in the spring, and emerge 
as adults in May. Males normally occur. 
THE BLUE-GRASS JOINTWORM. 2 
Howard (8, p. 13) first described the blue-grass jointworm in 1896 
from specimens captured by F. M. Webster in a rye field in 1885 at 
Normal, 111. Webster later swept it from timothy and blue-grass 
at La Fayette, Ind. (14; 8, p. 13). Lintner (9) states that he 
reared a number of specimens of this jointworm from galls in wheat 
1 Harmolita dactylicola Phillips & Emery. 
2 Harmolita captiva Howard. 
