6 o8 
Journal of Agricultural Research 
Vol. XIV, No IJ 
Table XI. Percentage of larval parasitism of Ceratitis capitate in Hawaii in IQ17 —Con. 
Number 
of larvae 
emerg¬ 
ing dur¬ 
ing first 
3-6 days 
Percentage of parasitism. 
' 
Host fruit. 
Month of col¬ 
lection. 
Opius 
hum- 
tits. 
Dia- 
chasma 
tryoni. 
Dia- 
chasma 
Sulla - 
wayi. 
7 etras- 
tichus 
giffar di¬ 
anus. 
Total. 
Yellow oleander. 
1917. 
July. 
13.6 
13.6 
47-7 
74.9 
Do. 
J . . 
Aiicrnct 
A 99 
Do. 
September. 
October 
T * 679 
294 
104 
59 
68 
. 188 
210 
100 
278 
167 
129 
386 
852 
120 
89 
100 
•4 
7-5 
14. 4 
8-5 
32.0 
25.8 
54-3 
Do. 
I * 7 
2.0 
38.0 
Carambola. 
December.. 
February.. 
March 
8-5 
4-4 
6.4 
6.4 
17.0 
25 * O 
14. 4 
6.8 
394 
Chinese orange. 
5 * * 
. 
20. 4 
11. 8 
Do. 
5 * 9 
1.6 
5 
Do. 
April 
• 5 
14. 6 
11. 0 
8.3 
9.6 
1. 6 
i *3 
26.3 
.8 
1.1 
9.6 
Do. 
May. 
• 5 
■9 
22.4 
28. 0 
Do. 
Jirnc , , 
Do. 
December.. 
June. 
* 3 * 3 
1. 2 
.8 
3 *o 
2.9 
24-5 
Ponay. 
4. 2 
18. 0 
Do. 
Tulv 
2.4 
Do. 
j y . 
August.... 
January.... 
February.. 
March..... 
. 2 
2. 2 
8. 0 
3*7 
Guava. 
I * 7 
3*4 
1. 0 
34.4 
Do. 
2 * 5 
Do. 
3*4 
Do. 
April 
3 *o 
4. 0 
Do. 
May. 
472 
9 1 
83 
446 
i 53 
2.1 
8.8 
6. 0 
1.8 
* 7 
. 2 
• 4 
. 2 
2.9 
8.8 
Do. 
July. 
3-6 
46.9 
Do. 
August.... 
November. 
40. 2 
57*8 
Do. 
. 2 
*•3 
50.2 
Loquat. 
January.... 
February.. 
March 
21. I 
„ *7 
Do.. 
A 9 
X09 
10. 5 
1.8 
7-3 
3 1 * & 
62. 4 
5*5 
63. 2 
81. 6 
Do. 
II. 9 
6.8 
Do. 
December.. 
January.... 
44 1 
41 
73 * 5 
5*7 
93*3 
Kona orange. 
4*9 
4.9 
51.2 
22.0 
83.0 
DO . 
Do. 
February.. 
March. 
14 
39 
7 * 1 
7 *i 
7 *i 
Do . 
May 
14. 2 
2.0 
7 -i 
7*7 
Do. 
November. 
A 4 
64 
67 
50 
10 
7 * 1 
A. 
35*5 
62. q 
16. 4 
Mandarin orange... 
November. 
0 
I 3 * 4 
12. 0 
10.9 
51*0 
Do. 
December 
0* w 
Sapodilla . 
February . . 
March . 
30-0 
16.3 
42.9 
4* 0 
16. 0 
Do . 
43 
42 
39<5 
30. 0 
16.3 
Do. 
April. 
White sapote. 
May. 
1.0 
42. 9 
9. 1 
1 
1. 0 j 
11.1 
Thus, as seen in Table III, nearly one-half of all the Mediterranean 
fruit-fly larvae developing during the year were destroyed and this is 
entirely the result of parasitic importations. This achievement, solely 
due to the efforts of the Territorial Board of Agriculture and Forestry, 
is worthy of unusual commendation. Insufficient emphasis perhaps 
has been placed during recent years upon the utility of these parasites. 
The constant extinction of at least 45 per cent of all worms developing 
in fruit, apart from the destruction of this pest through other agencies 
already present in the islands, notable among them being the ant 
Pheidole megacephala Fabrieius, without question greatly decreases the 
infestation of such fruits as the orange (Citrus sinensis) and certain 
