100 SEVENTEENTH Report STATE ENTOMOLOGIST oF MINNESOTA—1918 
Winona specimens, June 12 to July 5, maximum emergence, June 16. 
Mankato specimens, a few on June 17, no others emerging. 
Second generation adults from Lewiston, Winona County, began 
to emerge July 2, 1913, and reached their maximum July 10. None 
emerged after July 23. 
A lot of heads collected at Monticello, Wright County, July 24, 
1913, gave adults from August 9 to 25, about two thirds of these 
emerging from the 14th to the 16th. 
In 1914, at Saint Paul, adults were first found in the field June 2. 
The time of most abundant emergence of this first generation was June 
10. Second generation adults were on the wing June 29. Emergence 
continued in varying abundance until October 2. Three periods of con- 
siderable abundance were noted, about June 10 as before stated, then 
the last week of July and again the first week of September. 
Our earliest seasonal record of emergence is May 25. This was 
from a lot of clover heads taken at Lewiston, Winona County, Sep- 
tember 19, 1913. From these 2,716 adults emerged between May 25 
and July 21, 1914. The majority came out early in June. Maximum 
emergence between June 6 and 9, 809 adults. 
In connection with these data it should be noted that T. D. Urbahns 
while working at this station reported the following: “Seeds collected 
in October of 1909 and kept in a cold room all winter produced adults 
of the seed chalcid all through June of 1910. In the season of 1910 adults 
appeared in the field with the first clover blossoms about June 1. They 
increased rapidly until about June 15, after which a rapid falling off 
in their numbers took place. About June 20 to June 30 adults of this 
species could hardly be found. With the beginning of July they began 
to increase in numbers and by August 10 they had reached their 
maximum abundance for the year. Late in August the adults of this 
species rapidly disappeared with the drying of clover blossoms in our 
dry season.” 
To summarize: Adults of the spring generation appear early in 
June, sometimes late in May. They reach their maximum abundance 
from about June 9 to June 18. Most of these are out in June but a few 
may not emerge until as late as the third week in July. Adults of 
the succeeding generation may be found from early in July until 
October. The largest numbers are found from about August 10 to 15 
and again in the first week in September. 
