-14- 
net in different fields ranged- from O ; to 400. The latter figure would hav 
heen ^rtich greater had . it been possible to dislodge the very small larvae. 
Adults of Bathyplectes curculionis Thoms, were making their appearance and 
based on rearing the parasite from last-stage weevil larvae, it was found 
that 5 percent of the larvae were parasitised. On February 13 the larval 
count ranged from 0 to 600 and the adult count from 0 to 1^0, Parasitiza- 
tion by B. curculionis had increased to 20 percent. Only 1 survey .has 
been conducted in the area adjacent to the San Francisco Bay. On January 
29 the number of alfalfa weevil larvae collected per 100 sweeps ranged 
from 0 to 9* Only 1 adult weevil was taken. 
A WEEVIL (Hypera brunn'^iponnis Boh. ) 
Arizona. W. C. McDuffie (February 28): Regular observations in the infested 
area, of Yuna Valley, throughout January and February have shown a steady 
increase in abundance of H. brunneipennis larvae on alfalfa, bur-clover an 
sourc lover. On the whole, larval survival has been comparatively high, 
ov/ing to the absence of freezing night temperatures , and larvae have 
attained greater abundance and development has progressed somewhat more 
normally than in 1940. By the latter part of February considerable injury 
was being done to two fields of bur-clover, numerous patches of volunteer 
sourclover, and one thin stand of alfalfa, situated in a citrus grove. Vei 
little- damage to other alfalfa is anticipated this season, however, since 
.virtually all fields contain subinjurious populations, 
ALFALFA CATERPILLAR ( Co lias eurythe.me (Bdv. ) ) 
California. A. S. Michelbacher (February 27): Larvae of the alfalfa butterfly 
have been found all season. In the San Joaquin Valley the number collect- 
ed per 100 sweeps has ranged from 0 to 12. Some parasitization by 
Apanteles f laviconchao Riley has been; noted. In the area adjacent to the 
San Francisco Bay the number collected per 100 sweeps ranged from 1 to 22. 
Some of these were also parasitized by A. fla.viconchae . 
PLANT BUGS ( Lygus spp . ) 
Utah. F. V. Lieberman (February 24): Very little reduced by winter weather 
in the Delta tract of Millard County, central part of the State. Active, 
though not flying, in alfalfa fields, during mid-February. 
Arizona. L, L. Stitt (January 13): Nymphs in second to fourth instars of the 
first generation for 1941 were found on January 13 on optimum growth of 
Chenopodium murale at different locations in the Salt River Valley. 
CLOVER 
GREEN CLOVER WORM ( Plathypena scabra F. ) 
Mississippi. C. Lyle (February 2l): Adults received from Jones County in 
January. Swarming by hundreds at dusk in the vicinity of State College 
■ about January 20. 
