LEAFHOPPERS OF THE SUGAR BEET. 37 
while some had none at all. The average would not have been more 
than one leafhopper to 25 beets. They were most numerous on the 
higher, drier fields, and on the early beets. Two patches of very 
late beets close to the first one visited had no leafhoppers at this time. 
Eight females from this field were dissected, and fully developed 
eggs were found in each one, 9 in one, 7 in another, and from 2 to 4 
in each one of the others. Only large eggs could be seen with the 
lens used, and probably some of these were crushed while being re- 
moved. The fact that all females had fully developed eggs and that 
there were more females than males indicated that these adults had 
been out a long time and were not new ones of a brood that had just 
flown in from surrounding wild land. 
On June 29 a few were found in the late beets, but no nymphs were 
found anywhere. 
July 10 the adults were present in about the same numbers as be- 
fore, the females still containing eggs, and a few very small nymphs 
were found. 
July 23 the adults were slightly less numerous, and the nymphs 
from small to one-third grown and quite abundant. A few of them 
were nearly grown, but no fresh males could be found. More 
nymphs were found on the early beets, more " curly leaf '' on the 
late ones. 
August 3 the nymphs were mostly about two-thirds grown, some 
were small, and some full-grown. Large numbers of adults of the 
new brood were out, about half of the leafhoppers being adult at this 
time. 
August 14 the adults were abundant. The leafhoppers were nearly 
all adults or large nymphs, but a few small nymphs were still to be 
found. 
On August 29 the insects were mostly adult, males being still in 
the majority, but there was still quite a number of full-grown 
nymphs. Many females were dissected and a few found that had 
from 4 to 7 large eggs, but the rest had no sign of any. These few 
were probably the last remnant of the over-wintered brood of females. 
September 12 the adults were still common and more males than 
females were taken by sweeping. Large nymphs were still present 
in small numbers. Ten females were dissected, but no e<nr^ found, 
and the abdomens were all small. Evidently there was to be no egg 
laying for some time, probably not that season. 
Xote. — The season opened unusually late at Lehi in L906, ami 
these dates would be from one to two weeks late for an ordinary 
season. 
