57 
The moths increased in number from the time they were first observed 
until, by the 5d of June, in the early evening, when the field lay between 
the observer and the sun, a perfect cloud of them could be seen hover- 
ing over the blossoms as far as the eye could reach. They would spring 
up from under the foot like grasshoppers in a meadow on a Sunshiny 
day. It was also noticed that they were pairing freely at this time. 
On the 24th of June an examination of 177 heads of clover taken 
from the field before mentioned showed 91 heads infested with the cater- 
pillar of the moth as against 86 not infested. Many of the larvze were 
full grown and some were spinning their cocoons. The hay was cut 
at this date. An examination the next day, June 25, of 48 clover 
heads taken from scattered bunches on the college campus showed 8, 
or 162 per cent., of the whole infested. Examining 42 heads from a 
different field, cut on the 23d and 24th of June, only 3, or 7 per cent., 
were found infested. 
The damage was done by eating into the young florets and later into 
the seed vessels, causing the heads to a up and the flowers to shell 
from the receptacles like chaff. 
The larva is a small, greenish white caterpillar, with a dark brown 
head, about .25 to .30 of an inch long when full grown, many of them 
becoming tinged with red toward the hinder extremity as they approach 
the time of pupation. About the 24th of June the adults had nearly 
all disappeared, a few stragglers only being found by diligent search. 
Of a number of larve preserved in a breeding cage the first pupa was 
found July 14, but a visit the same day to the field before mentioned 
proved the second brood of the adults to have already appeared. An 
examination of dried bunches of hay left on the field disclosed some 
larve in the heads, which had spun their cocoons to pupate, from which 
it is concluded that the caterpillars can live in the cut hay for a con- 
siderable time if not hampered in their movements. An examination 
of the hay from the same field stored in the barn showed all the larvee 
to be dead. A dead pupa was also found, but nothing living. There 
were no empty pupa cases found to indicate that any moths had 
escaped from the hay thus stored. It seems certain, therefore, that 
everything that was subjected to the pressure and heat incident to 
storage was killed. The remedy, then, for this pest, which has caused 
the destruction of probably 50 per cent of the clover seed in the field 
observed, is to cut the hay soon after the first brood of larve appears, 
or in early June. The hay should be carefully cleaned from the field, 
so that no larve will find harbor in stray bunches which have not been 
gathered up. Scattered clover growing by the roadsides and in the 
fence corners should also he carefully mown at this time, and the heads 
at least disposed of in some manner to insure the destruction of the 
larve they may contain. This method can not but prove effective in 
reducing the second brood of the moths, and will also operate against 
the clover-seed midge Cecidomyia leguminicola. 
