rae Ty ee 
Parasites of Ephestia survive under grapevine bark.—-On May 18 H.C. 
Donohoe, Fresno, "examined 8 Thompson vines for overwintering larvae ina 
vineyard previously examined on February 6. He found larvae present at 
the rate of 388 per acre, although the previous examination indicated a 
population of 870 per acre. Several fresh-appearing empty ichneumonid co- 
coons were found under the bark of each vine, which probably accounts for 
much of the decrease in population (of over 55 percent of the Ephestia spp. 
present)." 
Monochromatic light trap tested in dried—fruit storage.--Mr. Barnes 
also describes the testing of "a monochromatic light trap developed by 
Professor Herms and his associates at the University of California. “Tite 
trap was installed in the cut-—fruit storage of one of the packing plants 
at Fresno on May 18, and was operated thereafter by members of this lab- 
oratory. The trap was operated from 7:30 p.m. to 5 a.m. for 4 nights 
and for one day, beginning at 8:30 a.m. and continuing until 8 o'clock 
the following morning. During these tests the trap took 1,241 insects, 
collection were: Ephestia figulilella Greg., 81.6 percent; Plodia intone 
estiodes sp., 1.7 percent. * * * Of the 231 adults of M. hebetor, 137 
were taken during the first 4 nights, or at the rate of 34 per nigh 
During the 24-hour period $4 of this species were taken. Apparently the 
trap took about as many in the dark as in the daylight. A sample of 40 
waS examined and was found to consist of 38, or 95 percent, females, and 
=, 01 5 percent’, “males;.° A malt—sirup bait trap, operated in the same 
storage room about 80 feet from the light trap, failed to. tare any 
of the storage moths except P. interpunctella and only about one half 
aS many of these as did the light trap for similar periods. The baw- 
trap took no parasites, which was Surprising, as past experience has shown 
the malt-sirup bait to be quite attractive to Microbracon. Evidently 
the light trap was sufficiently attractive to overcome most of the re- 
sponse which the moths customarily show to malt-sirup baits." 
Life history of the cigarette beetle.--W. D. Reed, Richmond, Va., 
reports that "The records were complete for 12 mated pairs of the spring 
brood of Lasioderma Serricorne Fab. on May 31. A summary of these records 
for the females is as follows:" Average preoviposition period, 3.3 days; 
average oviposition period, 12.8 days; average postoviposition period, 
5.3 days; and average number of eggs laid per female, 57. 
Scent glands of Tribolium spp. possessed only by adults .—-"Re- 
cently a request came to this division," states Newell E. Good, Silver 
Spring, Md., "for information regarding the nauseating properties of 
Tribolium larvae. Adult Tribolium are known to possess scent glands 
which give off a vile-smelling discharge when the beetle is injured 
Or excited. Examinations of many individuals of all stages showed that 
the glands are present only in adults and are absent in the larval and 


