656 
Journal of Agricultural Research 
Vol. XXX, No. 7 
Table I .—Summary of the colonization of Schedius kuvanae 
Year 
Massachusetts 
New Hampshire 
Rhode Island 
Maine 
Illinois 
Col¬ 
onies 
Individ¬ 
uals 
Col¬ 
onies 
Individ¬ 
uals 
Col¬ 
onies 
Individ¬ 
uals 
Col¬ 
onies 
Indi¬ 
viduals 
Col¬ 
onies 
Indi¬ 
viduals 
1909 
6 
89 
9 
7 
111 
247 
108 
234 
3 
945 
46,415 
1910 
889; 120 
68,486 
93,368 
382,645 
1,120, 536 
455,146 
1,477,963 
9,120 
3,844, 500 
1911 
1912 
2 
19,807 
1913 
1914 
252 
52 
265 
343 
237 
368 
944, 725 
182,308 
1,161,929 
1,006,279 
932,000 
1,540,000 
2 
21,855 
1915 
1916 
15 
57,200 
1917 0 
77 
232,260 
3 
5,666 
1918 
1919 
195*0 
110 
9 
440,000 
124,000 
1921 
4 
496,000 
200,000 
1 
12,000 
1922 
26 
16 
516,000 
1923 
118 
472,000 
Total _ 
1,789 
9,083, 299 
1,535 
6,303,048 
254 
1,115,055 
77 
232,260 
4 
17,000 
Year 
' 
New Jersey 
| 
Connecticut 
District of Co¬ 
lumbia 
Spain 
1 
Total 
Col¬ 
Individ¬ 
Col¬ 
Individ¬ 
Col¬ 
Individ¬ 
Col¬ 
Individ¬ 
Col¬ 
Individ¬ 
onies 
[ 
uals 
onies 
uals 
onies 
uals 
onies 
uals 
onies 
uals 
1909 
6 
46,415 
1910_ _ 
89 
889,120 
1911 
9 
68,486 
1912_ _ 
9 
113,175 
1913_ 
111 
382,645 
1914_ _ 
501 
2,087,116 
1915 
I 
160 
637,454 
1916 . 
! 
514 
2,697,092 
1917“-.- 
i 
426 
1,252,659 
1918 .. .. 
! 
1,182 
4, 776,500 
1919_ 
I 
368 
1,540,000 
1920 . _ 
67 
270,000 
; 
177 
710,000 
1921_ 
219 
1,638,875 
i i 
20,000 
234 
2,290,875 
1922_ 
53 
!g 
1 c 
! cl 
1 CN 
223 
904,000 
318 
1,832,000 
1923_ 
201 
804,000 
: _ 
b 200,000 
319 
1,476,000 
Total_ 
120 
482,000 
643 
3,346,875 
! i 
20,000 
200,000 
4,423 
20, 799, 537 
° A few eggs of Hemileuca oliviae parasitized by Schedius kuvanae were sent to Maxwell, N. Mex. 
b Estimated colonies included in totals of colonies. 
SUCCESS OF COLONIES AND DISTRIBU¬ 
TION 
Records obtained at the laboratory 
show that about 50 per cent of the 
colonies of Schedius liberated in Mas¬ 
sachusetts and Rhode Island have 
become established. It is probable 
that in reality a higher percentage of 
the colonies are successful. Many of 
the collections of host eggs from which 
this percentage was obtained were made 
one or two years after the colony was 
liberated. This species is rather slow 
in increasing to sufficient numbers 
after its liberation to make it easily 
recovered. Schedius have been re¬ 
covered from a total of 150 towns in 
New England. These recoveries have 
been made from 125 towns in Massa¬ 
chusetts, 15 in New Hampshire, 9 in 
Rhode Island, and 1 in Connecticut. 
The recoveries from the colonies in 
Maine and New Hampshire have been 
very poor, except in a few towns in 
southern New Hampshire. The 
broken black line in Figure 5 indicates 
the present dispersion of Schedius in 
New England. There have been oc¬ 
casional though infrequent recoveries 
of Schedius north of this line in Maine 
and New Hampshire. The recovery 
of Schedius from only one town in 
Connecticut is not a sign that the 
species will not do well in that State. 
No colonies were liberated there until 
the fall of 1921, and because of the 
scarcity of gipsy-moth eggs very few 
have been examined in an attempt to 
make recoveries. 
