
-7- 
Mr. King also reports: "The presence of a new tachinid species, 
which was first recorded last year in the vicinities of Toyono, Tsuruoka, 
and Sunakoshi, Japan, was again verified. Puparia of this fly were found 
in material collected from two different localities on Kyushu, though in 
very limited numbers. Scouting still continues in the hope of finding 
areas where this new tachinid species may be more abundant than the spe- 
cies especially sought." 
The second—generation flies of Dexia ventralis Ald., which started 
to emerge from the experimental plots at Haddonfield, N. J., July 22, 
continued to emerge until August 19. From these three plots a total of 
68 females and 71 males, or 30.9 per cenit, emerged. The females were 
used in propagation work. Mr. King states: "Approximately 2,400 para- 
_ Sitized grubs were secured and set out in cages at Haddonfield for bio- 
logical studies." Diggings made at Haddonfield during the first half of 
August yielded an abundance of first-instar larvae, but only a few of 
the second instar and none of the third. Second-generation Dexia adults 
were common at Haddonfield until August 10, but disappeared completely 
by August 19. No adults were found at Andorra or Huntingdon Valley. 

"The scouting for recovery of Prosena siberita Fab. this month," 
according to Mr. King, "gives every indication that this species is rapid- 
ly on the decline in the Moorestown area as no adults were taken; nor 
have any recoveries been made at any other colony centers. A few adults 
were reared in the insectary on larvae of Serica. 
R. W. Burrell, in charge of the collection in Australia of para-— 
Sites of scarabaeid beetles and of the oriental fruit moth, is to be 
transferred at the end of this season to Japan to take up intensive 
studies there of native or other parasites of the fruit moth. Mr. Burrell 
has already submitted two detailed reports on his Australian studies and 
collections of parasites of scarabaeids. 
TROPICAL, SUBTROPICAL, AND ORNAMENTAL PLANT INSECTS 
Results of investigations at the Panama, Canal Zone, laboratory 
on the time of emergence of adults of various fruit flies are reported by 
James Zetek as follows: "There is a very definite period for emergence 
of adults which applies to all species studied. Very rarely do adults 
begin to emerge before 7 a. m. and practically all that will emerge dur- 
ing the day do so in the forenoon only, always on a rising temperature. 
* * * Field experiments were also made to determine the time of emergence 
and the data parallel those in the laboratory, the only difference being 
in the percentage that reach maturity." The species involved were the 
Central American fruit fly (Anastrepha striata Schin.), the West Indian 
fruit fly (A. fraterculus Wied.), the dark fruit fly (A. serpentina 
Wied.) and the papaya fruit fly (Toxotrypana curvicauda Gerst.). Ac- 
cording to Mr. Zetek, A. fraterculus oviposits very readily in mango but 
the mango must still be green and within about 15 days of maturity. 
