98 SEVENTEENTH Report STATE ENTOMOLOGIST OF MINNESOTA—1918 
ing to Urbahns (1914), under favorable temperatures the larvae begin 
feeding in about a week after the eggs have been deposited. If condi- 
tions are extremely favorable, the 
larvae complete their growth in about 
twelve or fourteen days, enter the ay 
pupal stage for four or five days and /| S. \ 
emerge as adults. The larval and ee Sie Aa aeeee Pies 
pupal stage are spent entirely within 
the infested seed. The second and a partial third brood overlap in July 
and August. Females oviposit in the late blossoms or seed crops. A 
few of these become adult before winter, but soon perish. They hiber- 
nate mostly as full-grown larvae within the seeds, enter a short pupal 
stage in the spring and appear as adults in June. 
Fig. 21. Larvae of B. funebris in clover seeds. (After Urbahns.) 
EMERGENCE OF ADULTS 
In 1911 the clover seed chalcid was very rare in the southern 
half of Minnesota owing to the failure of the clover crop on account of 
the unusually dry season. Observations were made in the vicinity of 
Duluth from July 15 to October 15. Adult chalcids were not found 
until July 21. They reached their maximum abundance about August 
15, then gradually decreased in numbers and were not found in the 
fields after September 25. A few specimens were found at Bemidji, 
September 21. 
