June, ’20] 
SHERMAN: GREEN CLOVER WORM 
299 
Sarcophaga cimbicis and Mr. Leiby one of Anthrax lateralis. The 
writer also reared one hymenopteron identified by Mr. Cushman at 
Washington as “a Campoplegine apparently new species and new genus.” 
This gives a total of eight species, none heretofore recorded from 
this host so far as known to us. The list follows: 
1. Trichogramma pretiosa Riley, a very important egg-parasite. 
2. Phorocera claripennis Macq., moderately important. 
3. Exorista boarmice Coq. 
4. Frontina aletice Riley. 
5. Euphorocera floridensis Tns. 
6. Anthrax lateralis Say. 
7. Sarcophaga cimbicis Tns. 
8. A Campoplegine, probably new sp. new gen. 
Field Conditions 
To appreciate the economic problem presented to us, a brief descrip¬ 
tion of field conditions is necessary. The outbreak was universal 
throughout the eastern half of the state: tens of thousands of acres of 
soy beans in the aggregate were so defoliated that the lace-work of 
dried leaf-veins gave a hazy cob-webby appearance to whole fields. 
In the most severe cases all foliage was eaten, but normally the attack 
was most severe on the younger of the grown leaves in the upper part 
of the plant, leaving the growing bud and the older lower leaves. This 
enabled many fields to make quick recovery when the worms were 
killed, or after they had matured. The larvae were feeding so raven¬ 
ously and growing so rapidly that every day, each hour, was important. 
It was a case of immediate action or a lost opportunity. Hence the 
cage work and field observations which have been mentioned were 
carried on simultaneously with field tests of remedies and publicity 
work. 
With us the soy bean crop is grown in either or all of four ways (1) 
in rows to itself, (2) in rows between rows of corn, (3) broadcast in 
fields to itself, or (4) broadcast between rows of corn. We immediately 
recognized that whatever direct remedies were to be used could be 
more effectively applied where the crop was in rows by itself, and that 
to meet the other conditions would be more difficult. 
♦ 
Experiments with Remedies 
We find no previous record of definite tests with arsenicals, these 
have been ignored as out of the question in field areas, and we were 
further hampered by the general reputation of beans for susceptibility 
to injury by their use. But it was evident that nothing less than an 
immediate application of arsenicals could save the situation. We 
