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294 Report or THE DEPARTMENT OF ENTOMOLOGY OF THB 
puparia show as small, oblong, dark-brown, raised spots beneath 
the epidermis near the base of the asparagus stalk and are often 
mistaken for the rust pustules. If taken from beneath the 
epidermis during the fall they are generally amber-brown in 
color and oblong in shape, with two minute horns or projections 
at each end. After remaining in the stem all winter they are 
generally very dark brown in color. See Figs. 4 and 5, Plate 
XLVIL. | 
LIFE HISTORY. 
The adult flies issued in confinement May 30. They were 
taken in the field on asparagus June 8. On June 19, puparia and 
maggots were found beneath the epidermis of this season’s 
growth. No adult flies were to be found. None of the adult 
flies were taken again until August 2. After this date occasional 
specimens of adult flies and of maggots were noticed until the 
asparagus was killed by frost. During all the fall the puparia 
were plentiful and apparently many of the maggots which 
changed into puparia the latter part of August remained in this 
condition over winter. 
HABITS AND METHOD OF WORK. 
The adult flies can be found around the flowers, but they were 
generally found congregated around wounds made by the aspara- 
gus beetle, apparently feeding upon the juices exuding from these 
wounds. The place and method of depositing the eggs were 
not determined, but frequently the mine made by a maggot 
started beneath a leaf scale and generally near the surface of the 
ground, thus indicating that the eggs are sometimes deposited 
under or near the leaf scales. In some instances mines were 
found which started nearly adoot above the ground, but generally 
the majority started at or near the surface of the ground and 
extended downward betow the surface of the ground for distances 
varying from,3 to 4 inches. 
The work of this pest should not be confused with the injury. 
of the European asparagus fly, which mines into the stalk; while 
the above species simply works beneath the outer bark or epider- 
dot Legit 
