~O- 


























In addition to the tachinid parasites of Forthetria dispar, 2,400 
cocoons of Apanteles fulvipes Hal, were received at Melrose Highlands from 
Hungary, from which 220 Living adults were obtained,| 
In Japan attempts were made to continue the investigations on parasitism 
of the gipsy moth which vere begun the previous year, | 
; Infestations of Porthetria dispar in Japan are usually very local, often 
“being confined to two or three ornamental trees, and are therefore dit*icult 
60 locate, Such local outbreaks are apparently of short duration, as all of 
the infestations used for study last year were almost entirely devoid of larvae 
this summer, 

q Owing to an excessively rainy season, lasting from the first of May 
until about the middle of July, it was not possible to perform very much work 
in the field, Disease was prevalent and several times collections of dispar 
larvae were killed off before they could be packed for shipment. One lot of 
$60 larvae was sent early in the season, and from these 250 cocoons. of Apanteles 
-fulvipes Hal. were obtained, 

§ Rearing work is in progress with the Apanteles adults received from 
Europe and Japan, and as a result 7,000 Apanteles fulvipes have been liberated 
this season. 
a ee ee 
FORZST INSECT INVESTIGATIONS 
Lf, E, Snyder, Entomologist Acting in Charge 
. J, E, Patterson left Ashland, Oreg,, July 26, for an extended trip in 
the Sierra regions of California, The pine defoliator (Coloradia pandora Blake) 
‘was discovered in the Chiquito Basin. The infestation is evidently very light, 
since no trees could be found that had been noticeably defoliated. The cater- 
pillars were found on the ground under trees, where they had evidently been 
“brought down by the smoke and gases. from the control fires, This discovery 
is interesting, as the species has not before been reported for this locality. 
On July 14, Mr. Patterson arrived in. the Yosemite National Park to study the 
“present forest insect conditions in this Park, Barkebeetle infestations in the 
Yellow pine, sugar pine, and Jeffrey pine have been very light since the last 
examinations made in the Park in 1919. The pine defoliator, Coloradia pandora 
‘Blake, was also found in the Park, Caterpillars were found feeding on the 
Jeffrey pine in the Little Yosemite and in the Snow Creek Basin. They were 
found on the yellow pine on the Yosemite Valley floor, 
| Dr. H. E, Burke reports that the Forest Insect Laboratory at Palo Alto, 
Calif., is cooperating with the California State Department of Agriculture 
in an exhibit for the State Fair at Sacramento, The laboratory furnishes the 
‘specimens of the shade=tree insects, their work and photographs, and the State 
exhibits them in connection with its regular exhibit. The exhibit goes from 
‘the State Fair to various county and other fairs, so that it will be working 
for us most of the time. 
