Milford chronicle., 1930-05-30
FIND PARASITE
TO AID IN FIGHT
AGAINST BEETLE
rContinned from First Paael

0OHtHHtA JfOH rus A9S
acres in the center of the beetle in
tested area.
From this huge colony, the ento-
mologists have since that time TAX
en- thousands of the parasites to es-
tablish additional colonies in other
heavily infested regions. In describ-
ing the work of establishing these
numerous colonies of Japanese Bee
tie parasites, ]. L. King and j. X.
Holloway, in a report published' IN
the Journal of Economic Entomolo-
gy in February, state, 1T is found
that a satisfactory colonization
point is one in which the Japanese
Beetle breeding ground is plentiful
and moderately drained and IN
which the host larvae occur at the
rate of at least l per square foot.
Also wild carrot, the favorite food
plant of the adult stage of the para
site must be present in abundance"
In pointing out the localities
where the parasites have been lib
Grated, Messrs. King and Holloway
state that they have placed "a col
onies in Burlington county, colon
les in Camden county, IA colonies IN
Gloucester county, 2 colonies IN
Mercer county, 26 colonies in Bucks
county. Is colonies in Delaware
county, 26 colonies in Montgomery
county and 8 colonies in Ph1ladei-
phia county. -.
The exact locations in the eight
counties where the beetles nave
been placed are: Burlington county
Beverly Township, 4 colonies; BOZ
dentown, colonies; Burlington 1
colony; Chester, 2 colonies; Delran'
I colony; Easthampton, l colony;
Florence, 8 colonies; Lumberton, l
COLONY: Mansfield, colonies; Med
ford. l colony; Northampton, col
onv: Springfield, colonies; West
hamilton, 6 colonies; Willingboro' D
townships; Camden county, Pensau-
ken. 2 colonies; Delaware, 1 colony;
Gloucester. Deptford Township, z
colonies: Mantua, colonies; Mon
roe 2 colonies; Washington, 1 col
onv: Glassboro, colony; Harrison
4 colonies; Mercer county, Trenton
1 colony; Ewing Township, l col
onv: Bucks county, Bensalem Town
ship, 10 colonies; Bristol, 5 colonies !;
Middletown, colonies; NeWtown' l
colony: Northampton, 1 colony;
SOUTHAMPTON, 2 colines; Delaware
county. Radnor Township, l colony;
Haverford. Z colonies; Ridley, 3 col
onies: Springfield, colonies; Upper
| Dorhy . colonies: Montgomery
county. Arlington Township, 6 col
onies: Cheltenham, colonies; Low
er Merton, II colonies; Moreland,
colonies; Springfield, colony; up
per Merton, colony; Upper Dublin
! colony; Philadelphia, 8 colonies
Total colonies in heavily infested
area. 1870; outlying sub-colonies
Harrisburg, Pa, 1 colony; Long IS
land. N. Y, 2 colonies; New Haven
Conn, 1 colony. -,
It is planned to put out a large
number of additional colonies TINS
summer when the parasite is active
so that it can have additional terri
| tory in which to work.
In summing up the results OF the
nine years investigation with TINS
narasite, Mr.. King states, "Mr.. Hal
ioway and myself with the assis.
| tanc of other entomologists here anc
! abroad have found this insect to oI
a specific parasite of the japanese
Beetle, in its native land and in this
country it is following the same ten
dency. Comparisons show that the
time of emergence and the period o.
adult activity and larval develop
ments are the same here as in ia,
nan. This indicates that the sol
temperatures throughout the veal
are favorable for it's normal develop
ment.
This parasite frequents the tow'
ers of the wild carrot almost to the
exclusion of other plants. In the
present area infested with the Jap
anese Beetle, wild carrot is widely
distributed and very abundant. 1t Is
believed, because this parasite Is
specific in its habits and is. so per
fectly adjusted to its new environ
ment with the selection of an abun-
dant food plant, that it will prove tc
be one of the most important para
sites acting in the biological control
of the japanese Beetle.