Milford chronicle., 1924-08-08
SCIENTISTS KILLING
BEETLES BY PARASITES
AND POISONS
Continued from first page)

numbers small in Japan are I'M
known in America. In it's native land
the Japanese beetle never has be-
come a destructive pest.
So the United States Government
sent A. ~ King to Japan to hunt for
the parasites. Addressing the ento-
mologists at the Academy of Scien-
ces, Mr.. King told how he found that
a little insect known as Conteter
Cinera is chief foe of the Japanese
beetle-Papilla Japonica. Last fall
large number of these parasites were
released in New Jersey This year
they have been found fiOurishing
there. This spring 2200 more were
set free at Torresdale, to begin to
wage war on their old enemies, the
Japanese beetles.
These parasites lay eggs on The
Japanese beetles at one stage in the
latter's life history. These eggs hatch
out inside the beetle as tiny worms,
eat out the hosts internal parts, and
the beetle dies and the parasite
and flies away to lay its own
eggs on another victim beetle.
But are you sure you aren't in
Producing another insect pest when |
you introduce this parasite?"
mo danger at ALL" was the an
swer "The parasite insect never bo-
ther men nor domestic animals. It |
eats no LEAKAGE nor fruit. While a
grub it lives on beetle-meat and
when adult it either eats nothing at
all or at most only the honey-dew of
aphids-the ANTS cows"-or the
nectar of flowers.
Nor is this parasite dangerous to
he many insects which produce sub
stances valuable to man, such as the
zee, the silkworm, the scaIe-shaped
Insects which produce shellac-and
/ hundred other insects of economic
'alue to the world"
Every golf-player, every home-ow-
Ter who cherishes his lawn, has rea-
on to be grateful for the introduce e
ion of the parasite which will help
eep down the Japanese beetle pop
lation, it was declared.
After the Japanese beetle has fin
she'd gOrging herself to her hearts
Ontent, she lays eggs in the sod and
len dies. These eggs hatch out into
rubs-little white wOrms-which
'awl down the grass stems and de-
our the roots. If there are not more
ian 100 to the square yard, they do a
tile harm. But often they become Il
5 numerous as 1000 or more to the p
luare yard. Then a lawn is disfig- c.
red with dead patches. 1
But B. B. Leach, of the United u
.ates Bureau of Entomology, an IL IL
,unced that a soil insecticide has 8
zen found which will kill these d.
'ubs and protect a lawn-carbOn VI
sulphide emulsion. It costs about d'
5 to treat one golf putting green W W
tn this chemical. g.
This scientific convention is differ .
t from most meetings of learned cl
cieties in that the entomologists, -
stead of sitting in a hall and lis 70
hing to papers spent the three days tb
their conclave going about and h., b
eing things being done. m,
Their field trip was arranged by tn
E. Hodgkiss, extension entomolo- ! WE
t for the Pennsylvania State Col de
e, and c. H. Hadley, director of ha
|, Bureau of Plant Industry of the VIC
tie Department of Agriculture. In
,ir journey Charles X. Hallowell, wa
iladelphia County agent, aided in or
'angements. The expedition visit su
the Bustleton field laboratory, lie
willow Grove experiment sta- ha
n and Valley Forge, and dined at in
Lake Club as guests of het
Chester-Delaware County Fruit ma
)wers. They toured through south Su
New Jersey, in charge of Prof. of
J. Headlee, extension 9ntomolOgist mil
the State of New Jersey. mi