hi. B-216 | 
MONTHLY LETTER OF THE BUREAU OF ENTOMOLOGY 
: UNITED STATES DEPARTMENT OF AGRICULTURE 





pee? 9° | ikhe Tt oO UNSep tember" 1921 
PREAU OF ENTOMOLOGY 
STORED-PRODUCT INSECT INVESTIGATIONS | ~¥)\"** 
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E. A. Back, Entomologist in Charge SsrocrivVve Dp 
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J. C. Bridwell, who left Washington last December for a 
study of the bruchid pests of the mesquite and closely related 
plants in Texas, returned from Brownsville to Washington during 
June with considerable parasitized material of Acanthoscelides 
uniformis and Acanthoscelides sallaei. Six hymenopterous 
parasites of these bruchids have been secured. Mr. Bridwell 
is at present preparing a report upon his work. 


H. F, Willard, who has charge of the Honolulu office of the 
Federal Horticultural Board, is investigating the bruchid pests 
of the algaroba bean as his inspection duties permit. When 
he sailed from San Francisco, July 20, he carried with him 
several lots of pods of huisache (Vachellia farnesiana), secured 
by Bridwell, in which was breeding the huisache weevil (Acanthos- 
celides sallaei) and its parasites. Mr. Willard arrived in 
Honolulu July 27 and reported, on July 50, that the parasites 
Urosigalphus bruchi and Horismenus sp. were emerging in good 
numbers on his arrival at Honolulu, and that between July 27 
and 30 he had secured over 300 specimens of Urosigalphus and 
1,000 specimens of Horismenus sp. On July 350, 94 females and 
113 males of U. bruchi were liberated and immediately began 
searching algaroba pods for bruchid larvae. On August 7, Mr. 
Willard reports having reared from the Texas material, besides 
the two species mentioned above, Glyptocolastes bruchivorus 
and Lariophagus texanus. The work in Honolulu is being done by 
Mr. Willard in cooperation with D. T. Fullaway, entomologist 
of the Hawaiian Board of Agriculture and Forestry. 

Perez Simmons, who was transferred from the bean weevil 
investigations at Alhambra to Washington early in the year, 
has been assigned to an investigation of the ham skipper, 
Piophila casei, and other insects affecting meats. This is 
in continuation of work started during the summer of 1920 under 
informal cooperation with the Bureau of Animal Industry. 
R. T. Cotton was transferred from the Orlando, Fla., field 
station to Washington on July 1. He is continuing his research 
work with grain pests. 
Miss Marion Van Horn, entomological laboratory assistant, 
has been transferred from Truck Crop Insect Investigations 
to this office. 
